205 



8079 Erycina colpoica. Bulf of Cal. 



3080 Rochefortia compressa. Gulf of Cal. 



3081 Aligena nucea. Gulf of Cal. 



3082 Vesicomya suavis. Gulf of Cal. 



o 



3083 Stearns, R. E. C: 



Notes on Cytherea (Tivela) crassatelloides Conrad, with de- 

 scriptions of many varieties. U. S. natl mus pr 21:371-377, t 

 23-25. 



Describes the following forms. 



3084 Variety Pauciradiata 



3085 Variety Multiradiata 



3086 Variety Alternata 



3087 Variety Eccentrica 



3088 Variety Serialis 



3089 Variety interrupta 



3090 Variety Luteobrunnea 



3091 Variety Uniradiata 



3092 Variety Biradiata 



3093 Variety Triradiata 



3094 Variety ochracea 



3095 Variety Purpureo-chocolata 



3096 Variety Biseralialis 



3097 Variety Triserialis 



3098 Variety Aurora 



3099 Variety Duplicata 







3100 A in phi thalamus tenuis 



"Shell elongate-ovate, dark greenish horn-color, with the colu- 

 mella and the aperture yellowish white, excepting the dark edge 

 of the peristome. Nuclear whorls 1%, well rounded, marked by 

 about 15 slender, equal and equally spaced, spiral threads and nu- 

 merous, very fine, axial threads, lending the surface a very mi- 

 nutely-pitted appearance. Post-nuclear whorls very narrowly 

 subtabulatedly shouldered at the summit, well rounded, smooth 

 excepting fine, incremental lines. Suture moderately impressed. 

 Periphery of last whorl well rounded. Base long, well rounded, 

 bearing a low, broad, spiral cord on its middle, which bounds the 

 posterior termination of the white area. Aperture oval, very 

 oblique; peristome double, the inner fusing with the anterior por- 

 tion of the outer lip, while posteriorly it is distinct and at a con- 

 siderable distance from the columella and the parietal wall; the 

 space between the columella, parietal wall and the inner peri- 

 stome is bridged over by a concave band of shelly matter." — 

 Bartsch, U. S. natl mus pr 41:264, f 3. 



Type locality: — La Jolla, Cal., on seamoss (F. W. Kelsey). 



Monterey, Cal. AA. lacunatus and inclusus are described in 

 the same paper as above, with figures. 



3101 Hanna, G. Dallas: 



The American species of Sphyradium with an inquiry as to 

 their generic relationships. U. S. natl mus pr 41:371-376, with 

 figures. 



3102 Genus Sphyradium Charpentier. 



3103 S: Hasta. Pleistocene, Kansas. 



3104 S: alticolum. Utah, Colo., and Wyoming. 

 Synonymy: — Pupa and Pupilla alticola Ingersoll. 



3105 S: Edentulum. Europe, Asia, etc. 



