382 RISSOINA. 



R. PRIVATI, Folin. PL 58, fig. 9. 



Solid, white, clathrate by longitudinal and spiral ridges ; whorls 

 11, slopingly convex, suture impressed, crenulated; lip subacute. 



Length, 5'5 mill. 



Haiti. 



Perhaps a variety of the preceding species. 



R. DESHAYESII, Schwartz. PI. 57, fig. 87 ; PL 68, fig. 9. 



Solid, shining, semipellucid, white, nodulously decussated by 

 about 22-24 erect longitudinal, crossed by equal spiral lirse ; whorls 

 9-10, suture impressed, undulated, base channeled and spirally 

 ribbed ; lip crenulately varicose , excised below^ Length, 9*4 mill. 



Philippines. 



I suppose that R. Deshayesiana, Recluz. (fig. 9), of the Concho- 

 logia Iconica is intended for the same species. 



R. MEDIA, Schwartz. PL 57, fig. 89. 



Solid, white or yellowish, semipellucid, shining, with 18-20 lon- 

 gitudinal, crossed by spiral ridges ; whorls 8, subconvex, with dis- 

 tinct but narrow suture, the base with a funiculum of three spiral 

 riblets ; lip sinuous, produced below, varix crenulated. 



Ceylon, Java, Nieobar Is. 

 R. LABROSA, Schwartz. PL 57, fig. 88. 



Solid, white, semipellucid, shining, with 24-26 erect, elevated 

 longitudinal, crossed by closer, less elevated spiral line ; whorls 9- 

 10, flatly convex, suture subcarinated ; lip tumid, thick, broadly 

 sinuated below, crenulately varicose. Length, 9'5 mill. 



West Indies. 

 R. TRANSENNA, Watson. PL 58, fig. 10. 



Solid, white, with 12-14 remote, narrow longitudinal ribs, crossed 

 by somewhat closer spiral line; whorls about 7i, convex, but with 

 somewhat shallow suture, basal funiculum consisting of a single 

 nodulous ridge ; inner lip concave in the middle, outer lip with a 

 crenulated varix. Length, 3'3 mill. 



Fiji Is. 

 R. ERYTHR^A, Phil. PL 57, figs. 97-2 ; PL 58, figs. 3, 4. 



Rather solid, white, with 12-14 longitudinal cosfce, crossed by 

 closer line, the two upper line thinner, the lower one granular; 

 whorls slightly convex, with inconspicuous suture ; peristome dis- 

 tinctly labiate within, externally varico.se, produced below. 



Length, !)'7~) mill. 



Red Sea to Hong Kong, Loo Choo Is. 



