CLASS GASTROPODA 
57 
Subgenus Liriola Dali, 1870 
Siphonaria thersites Carpenter, 1864 
Annals and Magazine of Natural History, 14:425. American Journal of Conchology, 6: 
PI. 4, fig. 8; PI. 5, fig. 2, 1870. 
S. testa parva, tenui, haud elevata, valde inaequilaterali, dense nigrocas- 
tanea, laevi, seu interdum costulis paucis, obtusis, obsoletis, radiatim vix 
ornata; epidermide laevi, tenui, fugaci; costa pulmonali intus et extus valde 
conspicua, tumente; vertice obtuso, plerumque ad quadrantem, interdum 
ad trientem totius longitudinis sito; intus intense nigro-fusco, margine 
acuto. Long., .16; lat., .33; alt., .17. (Carpenter.) 
Shell small, subconical, apex to one side, epidermis thin, light-colored, 
smooth, exterior of shell dark reddish-brown; with a few ribs; siphonal 
mark is quite perceptible, the siphonal groove forms an extension of the 
edge of the shell. Aperture elongate oval. Color of interior is a dark 
brown, with a light border around the margin. (Oldroyd.) 
Type in United States National Museum. Type locality, Neah Bay, 
Washington. 
Range. Aleutian Islands to the Straits of Juan de Fuca. 
Subgenus Kerguelenia Rochebrune and Mabille, 1889 
Siphonaria brannani Stearns, 1872 
Plate 2, fig. 18 
Proceedings of the California Academy of Sciences , 4:249; PI. 1, fig. 4. Bulletin 112, 
United States National Museum; PI. 15, figs. 13, 14. 
Shell oval, subconical, helcion-shaped; apex recurved and somewhat 
twisted, anterior and sometimes quite in line with margin; surface of shell 
irregularly undulating, of a dark brownish color, and marked with numer¬ 
ous fine whitish radiating ribs which crenulate the margin; shell internally 
shining and dark chocolate brown; muscular impression and siphonal 
groove distinct. Some specimens are quite irregular in outline, being 
affected in that respect by the inequalities of the surface upon which they 
are found. Long., .29; lat., .30 in. (R. E. C. Steams.) 
Type in United States National Museum. Type locality, Santa Bar¬ 
bara, California. 
Range. Santa Barbara and Catalina Island to Laguna Beach, Cali¬ 
fornia. 
