400 HOMALOGYRA. 



H. CANCELLATA, Krauss. PL 61, figs. 12-14. 



Planorbiform, flat above, concave and widely umbilicated below, 

 thin, white, distinctly cancellated ; whorls 5, convex, the last ventri- 

 cose, periphery subcarinate. Diam. 2*25 mill. 



Algoa Say, So. Africa. 



INDEX AND SYNONYMY. 



RISSOIDXE, JEFFREYSIID/E, SKENEID>, Etc. 



PAGE. 



Aberrans (Rissoa), C. B. Ad. Contrib. Conch., p. 113, 1850, . 369 

 Abjecta (Rissoa), Watson. Zool. Proc., p. 385, t. 36, f. 23, 



1873, . . .353 



Abnormis (Rissoina), Nevill. Journ. Asiat. Soc. Bengal, xliv, 



p. 100, t. 8, f. 23, 1875, . .391 



Abyssicola (Rissoa), Forbes. Brit. Moll., p. 86, t. 78, f. 1. 



= R. Testae, Arad. and Magg. var 368 



Abyssicola (Rissoa), Sars. Moll. Arct. Norv. 176. 



== R. subsoluta, Aradas 368 



Acicula (Rissoa), Desm. Bull. Soc. Phil. Paris, viii, t. 1, f. 3, 



1814. = R. auriscalpium, Linn. ..... 332 



Acinopsis, Monts. Nomenc. Conch. Medit., 63, 1884, . 319, 365 

 Acinus, Monts. Nomenc. Conch. Medit., 62, 1884. 



Alvania, Risso 319 



Acme, H. & A. Adams. Gen. Rec. Moll., i, 330, 1854. 



= Zippora, Leach. ........ 316 



Actonia, Monts. Nomencl. Conch. Medit., 61, 1884, . 319, 368 

 Aculeus (Rissoa), Gould. Invert. Mass., p. 266, f. 172, . . 347 

 Acuminata (Alvania), Gould. Proc. Bost. Soc. Nat. Hist., vii, 



p. 402, 1860, 365 



A cut a ( Rissoa), Desm. Bull. Soc. Phil. Paris, t. 1, f. 4, 1814. 



= R. auriscalpium, Linn. ....... 332 



Acutelirata (Rissoa), Carpenter. Proc. Cal. Acad. Sci., 1865. 



p. 217, '.361 



Adamsiana (Rissoina), Weink. Conch. Cab., p. 67, t. 15a, f. 4, 



18 386 



Aedonis (Onoba), Watson. Challenger, xv, p. 600, pi. 45, fig. 5, 348 

 Aemula (Alvania), Monts. Enurn., p. 26, . . . 365 



