182 MR. G. F. ANGAS ON EIGHT NEW SPECIES OF [Feb. 4, 



Sect. c. Lamina of lateral wing broad, marginal ridge feebly deve- 

 loped; second to eleventh dorsal segments multisulcate. 



23. Zephronia sulcatula. 



Zephronia sulcatula, Butler, Ann. & Mag. Nat. Hist. ser. 4, vol. x. 

 p. 357. n. 13, pi. 18. f. 5(1872). 



Borneo (W. Jeakes). Type, B.M. 



EXPLANATION OF PLATE XIX. 



Fig. 1. Sphcerotherium glabrum, profile. 



1 a. , anterior segments from above. 



2. — fraternum, profile. 



3. stigmaticum, perspective view from behind. 



4. Zephronia noticeps, head, nuchal plate, and anterior segments, enlarged ; 



front view. 



5. lutescens, profile. 



6. ignobilis, profile, enlarged. 



7. pilifera, profile. 



8. corrugata, profile. 



9. — — — banksiana, profile. 

 10. leopardina, profile. 



5. Descriptions of Eight new Species of Land and Marine 

 Shells from various Localities. By George French 

 Angas, Corr. Mem. Z.S., F.R.G.S., F.L.S., &c. 



[Eeceived December 16, 1872.] 

 (Plate XX.) 



1, Euthria aracanensis, n. sp. (Plate XX. fig. 1.) 



Shell ovately fusiform, solid, transversely ridged, the interstices 

 finely transversely striate, the ridges stronger in front, pale olivaceous 

 brown, ornamented with longitudinal irregular chestnut markings ; 

 whorls 9 to 10, strongly angulate and nodose in the middle, excavated 

 above, and slightly rounded below ; aperture ovate, nearly half the 

 length of the shell, angulate posteriorly, pale flesh-colour ; outer lip 

 crenulate, finely sulcate within ; columella strongly arcuate, with a 

 moderate posterior callus ; the rostrum slanting, recurved. 



Length 2 inches, diam. 1 inch (coll. Hanley). 



Hab. Aracan. 



2. Helix (Semicornu) silenus, n. sp. (Plate XX. fig. 2.) 

 Shell deeply and perspectively umbilicated, rather thin, globosely 



depressed, pale brown, minutely and very finely punctately striate ; 

 spire immersed ; whorls 5, rounded, rapidly increasing, the last 

 inflated, a little flattened at the upper part, descending considerably 

 in front, and somewhat augulated round the umbilicus ; aperture 

 oblique, rhomboidly lunate ; peristome thin, whitish; margins ap- 

 proximating, the right flexuous, narrowly expanded ; the columellar 

 margin rounded, expanded, and slightly reflexed. 



Maj. diam. 7, min. 6 ; height 5 lines. 



Hab. New Ireland. 



