LT8 SCINTILLA. 



Obs. A very curious, white, oval shell, which, although to the eve 

 smooth, is minutely granulated and striated near the margin, and 

 has its inner edges crenulated or undulated in a singular manner. 



21. Sc. scintillans (f. 44), Desk. — Testa ovali-subquadrata, 

 nitente, clausa, apice et medio semipellucida, ccerulea, prope mar- 

 ginem opaca, crassiore, lutea ; latere antico breviore ; margin e 

 dorsali utrinque declivi. Obs. Bluish and half-transparent at the 

 apex and in the centre, thicker, more opaque and yellowish to- 

 wards the margin. 



22. Sc. solidula (f. 4S, 49), Desfi. — Testa ovali-subquad- 

 rata, solida, pallide fulva ; latere antico breviore ; terminis obli- 

 que subtruncatis. Obs. Similar in form to S. scintillans, but 

 not so glassy or shining, more truncated, and of the same thick- 

 ness and colour throughout. 



23. Sc. ovuxina (f. 47), I)esh. — Testa quam Sc. solidula 

 magis tumida, angusta et truncata. Obs. A rather narrower, 

 more tumid and more truncated shell than Sc. solidula. 



24. Sc. turgescens (f. 45, 46), Desk. — Testa alba, solida, ovali- 

 subquadrata, valde inflata; margine ventrali recto; margine dorsali 

 declivi ; terminis truncatis ; apice tumido. Obs. A very tumid 

 white shell, with straight ventral margin and truncated extremities. 



25. Sc. turgida (f. 51, 52), Desk. — Testa alba, tenui, inflata; 

 latere antico brevi, truncato, latere postico tumido, rotundo ; mar- 

 gine dorsali elevato ; margine ventrali postice inflato, antice con- 

 tracts. Obs. This differs from Sc. turgescens in being thinner and 

 having the posterior side much more inflated than the anterior. 



26. Sc. Deshayesii (f. 50), Sowb. — Testa alba, pellucida, in- 

 flata, ovali-subquadrata, concentrice undulata; apice rotundo; mar- 

 gine dorsali utrinque declivi; terminis subtruncatis; margine 

 ventrali subrotundo, latere antico breviore. Obs. I am obliged to 

 change this name on account of the removal of the species named 

 by Deshayes Galeomma Layardi into this genus. 



27. Sc. pisum (f. 54, 55), Sowb. — Testa parva, lutea, semi- 

 pellucida, clausa, subovali, tumida, concentrice leviter striata; 

 latere antico brevi, latere postico inflato. Obs. A small inflated 

 yellow shell, with the posterior side more inflated than the anterior. 



28. Sc. succinea (f. 58), Desk. — Testa fusca semi-pcllucida, 

 quadrata, compressa, clausa; apice tumido; margine postico late- 

 rali obliquo. Obs. Rather Hat and nearly square. 



