. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Bulletin, So. Calif. Academy of Sciences Vol. 47, Part 3, 1948 The jaw is strong with six unequal ribs, strongly denticulating the convex margin. The radula has 50-1-50 teeth. The centrals are large with mesocone nearly as long as the basal plate. The laterals are wider. Both centrals and laterals are unicuspid. On the marginals the cusp is split into endocone and mesocone. Fur- ther out an ectocone appears. Type locality: Hillsides on north side of the west end of Soledad Canyon, Los Angeles
. Bulletin of the Southern California Academy of Sciences. Science; Natural history; Natural history. Bulletin, So. Calif. Academy of Sciences Vol. 47, Part 3, 1948 The jaw is strong with six unequal ribs, strongly denticulating the convex margin. The radula has 50-1-50 teeth. The centrals are large with mesocone nearly as long as the basal plate. The laterals are wider. Both centrals and laterals are unicuspid. On the marginals the cusp is split into endocone and mesocone. Fur- ther out an ectocone appears. Type locality: Hillsides on north side of the west end of Soledad Canyon, Los Angeles County, Calif. All specimens were taken during the months of February and March, 1947. They were found under dead yuccas (Hes- peroyucca whipplei). They were found over a narrow area about miles in length between points and miles from Solemint (western junction Sole- dad Canyon road with Mint Canyon Highway). All specimens found with- in 300 yards of the canyon floor. Alti- tude about 1,700 feet. The type No. 3692a, author's col- lection. Paratypes in collections of Los Angeles County Museum (No. 1085), Dr. S. S. Berry (No. 14582), M. L. Walton, and the author (Nos. 3645, 3666, 3683, 3685, and 3692). The anatomical characters together with the shell characters definitely place this snail in the subgenus Her- PLATB 24 peteros. S. angelus is distinguished Sonoreiix (Herpeteros) angelus from 6'. chttcei (Micrariottta chttcei TOdSe' sy"tIm°'^(d,''^peiTOatoThica'i Willett, 1940) by its somcwhat smaller diverticulum; ec, epiphallic ca- oj^p Ipcc stroncrlv descendinp- bodv cum; ev, epiphallus ; od, oviduct; *^^^' ^*^^^ SLlUllj,iy UCbCCIlUUlg UOU> p, penis: r, penis retractor; s, whorl, and by its half covercd um- bilicus. In 6^. chacei the umbilicus is. spermatotheca; sd, duct of sper- matotheca ; v, verge ; va, vagina ; vd, vas deferens). completely covered, much flatter and the umbilicus is not covered. 6". inglesiana is LITERATURE CITED Bebby, S. Stillman
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