Aleutijapelion aleuticus (Dall 1895)
- Dataset
- Seven new genera and thirty-four new species of buccinoid gastropods (Neogastropoda: Buccinidae) from the Aleutian Islands, Alaska
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Mollusca
- class
- Gastropoda
- order
- Neogastropoda
- family
- Colidae
- genus
- Aleutijapelion
- species
- Aleutijapelion aleuticus
biology_ecology
Habitat: Black sand and gravel or muddy sand and gravel with pebbles. Water temperatures of 3.7 – 5.0 ° C.
description
Description: Relatively large shells (largest examined 81 mm, RNC 4705); whorls rounded; periostracum thin, adherent, olive green to brown, shiny, not flaking in dry shells; color pattern two-tone, lighter on sharply defined basal area. protoconch with 2.5 whorls extended (but not nearly as much as in Beringius), scarcely if at all increasing in size; seven or eight teleconch whorls; axial lacking (except for growth lines), spiral sculpture absent, or if present, consisting of a few low, faint, irregular cords, or faint oblique ridges on upper part of whorl; siphonal canal short, base deeply notched near pillar; anterior lip extending below anterior tip of pillar. Lip of mature shell thickened and slightly flaring; lip continuous across anal sinus, connecting to narrow parietal shield in mature shells. Operculum (fig. 6 D) large, nearly filling aperture, narrowing anteriorly, concave on exterior surface. Radula: (fig. 12 E) Typical of this subfamily. Rachidian tooth reduced to a simple, chevron shaped, acuspate plate. Lateral teeth rather narrow, tricuspid, the outer cusp long curved, inner two cusps much smaller.
description
Figures 6 B – E
discussion
Remarks: This species differs from Aleutijapelion mirandus n. sp. in having a broader profile, and in lacking the narrow, channeled shoulder Also resembles Boreancistrolepis excelsus (see remarks under that species).
distribution
Distribution: Western Gulf of Alaska, S of Kodiak Island (152 ° 29 W) to central Aleutian Islands, west to Tanaga Pass, Andreanof Ids. (178 ° 25 W), at depths of 86 – 454 m.
materials_examined
Type locality: Amutka Pass, Aleutian Is., Alaska (52 ° 15.00 N, 171 ° 40.00 W), 454 m (R / V Albatross Station # 3481). Type material: Holotype, USNM 106999, 66 mm. Referred material: LACM 181446, 1 sp., 73.2 mm. S of Kodiak Island, 118 m; RNC 4631, 1 sp., 72.16 mm. S of Kodiak Island (56 ° 29.85 N, 152 ° 30.06 W), 297 m (NMFS 57 - 200101 - 146); LACM 181447, 1 sp., 50.5 mm. ESE of Chirikov Island, SW of Kodiak Id., 122 m; CASIZ 149898, 67.4 mm. Samalga Pass, Islands of Four Mountains (52 º 55.8 N, 169 º 20.4 W), 401 m (NMFS 23 - 200001 - 33); RNC 4611, 1 sp., 66.4 mm. Shumagin Is., SE of Alaska Peninsula (54 ° 41.13 N, 158 ° 00.15 W), 440 m (NMFS 57 - 200101 - 92); RNC 4646, 1 sp., 59.5 mm. Shumagin Is., Shumagin Is., SE of Alaska Peninsula (54 ° 30.70 N, 158 ° 52.02 W), 361 m (NMFS 159 - 200901 - 73); RNC 4705, 1 sp., 81.5 mm. S of Unalaska Island, Fox Ids. (53 ° 06.2 N, 166 ° 58.66 W), 294 m (NMFS 57 - 200101 - 8); RNC 4772, 1 sp., 74.34 mm. S of Umnak Id., Fox Ids. (53 ° 27.12 N, 168 ° 29.93 W), 86 m (NMFS 143 - 200601 - 23); RNC 4880, 1 sp., 63.25 mm. W of Carlisle Island, Islands of Four Mountains (52 ° 55.86 N, 170 ° 24.58 W), 228 m (NMFS 143 - 200601 - 29); RNC 4881, 1 sp., 80.14 mm. S of Yunaska Island, Islands of Four Mountains (52 ° 31.75 N, 170 ° 33.55 W), 220 m (NMFS 143 - 200601 - 40); RNC 4689, 1 sp., 78.9 mm. W of Tanaga Island, Andreanof Ids. (51 ° 39.68 N, 178 ° 25.57 W), 373 m (NMFS 143 - 201201 - 125).
Name
- Synonyms
- Beringius aleuticus Dall 1895
- Homonyms
- Aleutijapelion aleuticus (Dall 1895)