22 MITRA. 



latera compressis ; apertura brevi, labio externo crenulato, 

 medio sinuatim producto, acute dentato. — Narrow and sub- 

 cylindrical, decussated ; whorls banded with brown above, 

 compressed at the sides ; aperture short ; outer lip crenu- 

 lated, sinuously produced in the middle, acutely toothed. 



290. seeotina (f. 216), A. Adams. 



291. DEALBATA (f. 571), A. AdciAUS. 



292. pellis seepentis (f. 209), Reeve. 



293. asteicta (f. 206, 208, 224), Reeve.— Our figure 74, 

 copied from Reeve, is not characteristic of the species. The 

 true M. astricta will include the same that have since been 

 described as M. erenilabris, and M. Samuelis. 



294. kassoides (f. 631), Sowerby. — Testa crassa, pallide 

 flavida, oblongo-subgibbosa, costis subinsequalibus crenatis 

 longitudinalibus, et liris undulatis ad costas nodosis sub- 

 cancellata ; anfractibus septem brevibus ad suturam grada- 

 tis; apertura longitudine spirain asquanti, sinuatim contracta; 

 labio externo dentato, supra medium incrassato, producto, 

 infra medium angulato, antice acuminato. — Shell thick, pale 

 yellowish, oblong-subgibbose, subcancellated with rather 

 unequal crenated longitudinal ribs and spiral undulated 

 ridges nodose upon the ribs ; aperture equalling spire in 

 length, sinuously contracted ; outer lip toothed, acuminated 

 above the middle, angular below the middle, acuminated in 

 front. 



Sect. XI. Small shells, short and columbella-shaped, but 

 with no lateral congress Ion of outer Up. 



295. semen (f. 659), Reeve. 



296. putillus (f. 482), Pease— MS., Brit. Mus. 



297. tdeben (f. 457), Reeve. — All the specimeus we have 

 seen have been mutilated by the breaking away or absorp- 

 tion of the lower part of the outer lip, giving an appearance 

 of pointedness to the shell. 



298. millecostata (f. 480), Swainson. 



299. picea (f. 658), ?— MS., Brit. Mus. A curious 



little globose shell so named. 



