44A MAZATLAN TNITALTES 



specimens, by the state of tlie mouth, indicate matnrity ; por- 

 tions were found of a very few others. Long. (anfr. nucl. 

 decol.) 'O/S, lonff. spir. 'OS, lai. '032, div. 30°. 



Sab. — 3Iazatlan ; extremely rare, off Spondylus ; Jj'pool Col. 



Tablet 2031 contains 2 sp. one ATith complete mouth, the 

 other with complete apex ; also an adult labral fragment, which 

 may belong to this species. 



560. Ceeithiopsis Soeex, n. s. 



C. t. " C. pupiformi" simili, sed multo minore, tumidiore, gib- 

 bosd ; marginihus spircB maxime excurvatis ; anfr. yn. quarum 

 dimidium nucleoswm est, maxime prominens, Iceve; anfr. normali- 

 bits suhito ticmentibus, planatis, suturd vix impressA ; carinis 

 tumenfihus ir., iii. in spira maxime tuberculosis, una ad peri- 

 pheriam subtubcrculosd, striis in basi plurihus ; labro contracto, 

 lahio conspicuo ; albidd, purpnreo fused fasciatd. 



This remarkable shell looks like a fat Shrew with a promin- 

 ent snout. It is quite adult, but it i)robably varies in colour 

 and compactness, iow^'. '063, long. spir. '(yi2, long. nucl. '01, 

 lat. "027, lat. nucl. "007, div. maxime variante. 

 Sab. — Mazatlan ; 4 sp. off Spondylus ; I! pool Col. 



Tablet 2032 contaius a fresh and beautifully coloured speci- 

 men. 



561. Ceeithiopsis convexa, n. s . 



C. t. gracili, albo fused, marginibus spires recti s ; anfr.x. 

 normalibus, valde convexis, suturd profunda, eleganter cancel- 

 latis ; costis spiralibus iv., sujjer costal radiantes circiter xiii. 

 undulantibus, ad intersectiones subnodosis : interstifiis quadra- 

 tis, intus coneavis ; carind circd iJeripheriam hand tuberculosa ; 

 basi concavd, sublcevi ; aperturd rotundatd ; labia distincto, 

 haud prominente, rimam umbilicalemformente. 



This beautiful species is cancellated as in Phos ; and is 

 remarkable for the convexity of the whirls. The nuclear 

 whirls are decollated. Long. 'IS, long. spir. "146, lat. '056, 

 div. 12°. 

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



Tablet 2033 contaius the specimen. 



