MAZATLAN UNIVALVES 251 



differ from the typical species of that genus (1) in being fre- 

 quently sculptured, (2) in the callus winding round, generally 

 not covering the umbilicus, (3) in the outside of the callus not 

 being glossy, but having a glossy portion scooped out near the 

 columella. The labium is generally not reflected over the 

 body whirl. They appear to retain permanently the young 

 state of Teinostoma. At the same time, the specimens examin- 

 ed were so few (only 9 of 5 species) and some of these were 

 to such an extent intermediate between other groups, that it 

 is impossible to designate them with confidence. Some of the 

 small white shells described as E-otellse are probably referable 

 to this form. Mr. Cuming states that the species he found 

 were deep water shells, while the true Globuli are littoral. 



318. ETHALIA PYRICALLOSA, n. s. 



E. t. valde depressd, albidd, opaciore ; anfractibus iv. et 

 dimidio, quarum tres primi Iceves sunt, suturd haud impressed; 

 striis spiralibus tenuibus, rugulisque incrementi tenuis'simis 

 elegantissime ornatd ; callositate opacd radiatim rugosd circa 

 umbilicum parvum gyrante, juxta labium planatd, pyriformi $ 

 aperturd subovatd, labro tenui, intus suturam vix callosd ; labio 

 tn anfractu penultimo kaud expanso. 



This extremely elegant and characteristic shell agrees with 

 Vitrinella in the nature of the apex ; but differs in the revolv- 

 ing callus, which is not covered with the spiral striae, but 

 radiately wrinkled ; at the aperture it is suddenly planed off, 

 displaying a pyriform shape. Long. "019, lat. '047 by '037, 

 div. 160. 

 Sab. Mazatlan ; 1 sp. off Spondylus ; L'pool Col. 



Tablet 1169 contains the specimen. 



319. ETHALIA LIRULATA, n. s. 



E. t. depressd, albd, opacd; anfractibus iv. quarum primi 

 Iteves sunt, suturd haud impressd ; striis spiralibus tenuibus 

 confertissimis ; callositate opacd, circa rimulam umbilicalem 

 gyrante, juxta labium planatd, latd, subtrigond; aperturd ob- 

 ovali; labro tenui, infra suturam minime callosd ; labio inpariete 

 nullo. 



Known from E. pyricallosa by the compact growth, close 

 striae without transverse wrinkles, and short broad callus 



