60 



3226 M : balthica L. 1758. 



Arctic seas. — Japan. — Monterey, Cal. 



3227 Macoma alaskana Dall, 1900. t 



3228 M: undulata. Gulf of Cal. to S. A. 



3229 ML: indentata tenuirostris Dall, 1900. 

 San Pedro, Cal. and Santa Barbara Islands. 



3230 M: elongata Hanley, 1844. 

 Baja Cal. to Panama, in 14-30 fms. 



3231 M: aurora. Gulf of Cal. — Panama. 



3232 Bartsch, Paul: 



West American mollusks of the genus Cingula. U. S. natl 

 mus pr 41:485-488 t 41. 



3233 Cingula martyni. Alaska. 



3234 Variety Scipio. Alaska. 



3235 Cingula alaskana. Alaska. 



3236 Cingula aleutica. Alaska. 

 Synonymy: — Onoba aleutica Dall. 



3237 Cingula katherinae. Alaska. 



Named in honor of Mrs. Kate Stephens, the discoverer. 



3238 Cingula montereyensis. Monterey, Cal. 



3239 Nodulus cerinellus 



3240 Noduhis asser 



3241 Nodulus kelseyi 



Type locality: — Coronado Islands, Baja Cal. 



3242 Nodulus kyskensis 



Bartsch, U. S. natl mus pr 41:289-291 describes the above, all 

 from Alaska, except as noted. 



3243 Bartsch, Paul: 



Recent and fossil mollusks of the genus Alvania from the West 

 Coast of America. 1. c. 333-362, t 29-32. List follows. 



3244 Alvania castanella. Alaska. 



3245 Alvania aurivillii. Alaska. 



3246 Alvania cosmia. San Pedro, Cal. — Baja Cal. 



3247 Alvania albolirata. Cape San Lucas. 

 Synonymy: — Rissoa albolirata Cpr. 



3248 Alvania lirata. Gulf of Cal. 

 Synonymy: — ?Rissoa lirata Cpr. 



3249 Alvania trachisma. Monterey, Cal. 



3250 Alvania californica. Monterey, Cal. 



3251 Alvania carpenteri. Neah bay, Wash. 



Synonymy: — Rissoa carpenteri Weinkauff. — Alvania reticu- 

 lata Cpr. not Montagu, 1808. 



3252 Alvania perdroana. San Pedro, Cal. 



3253 A: almo. Santa Barbara Islands, Cal. 



3254 A: alaskana, Alaska. 



3255 A: montereyensis. Monterey, Cal. — Alaska. 



3256 A: excurvata. Mazatlan. 



3257 A: electrina Cpr. Cape San Lucas. 



3258 A: rosana. Santa Rosa Island, Cal. 



3259 A: fossilis. San Pedro, Cal. (fossil). 



3260 A: iliuliukensis. Alaska. 



3261 A: purpurea. Monterey, Cal. — Baja Cal. 



3262 A: acutilirata. Monterey, Cal. — Baja Cal. 



3263 A: JEquisculpta Keep. 

 Synonymy: — Risoa grippiana Dall. 

 Type locality: — San Diego, Cal. 



Range: — Santa Barbara Island, Cal., to Todos Santos bay, 

 Baja Cal. 



3264 A: Oldroydae. San Pedro, Cal. 



