R I M U L A. 



Genus KIMULA, Defresne. 



Testa patelliforiMS, teniii, cancellata ; apice remrvo ; 

 (torso arcuato ; Jissiird simplici, inter apicem et 

 miirf/im-m intermedia. 

 Shell patellilbrni, thin, ctmccUuted ; apex recurved; 

 back arched ; fissure simple, intermediate between 

 the apex and the margin. 



The recent species of this interesting little genus, 

 formerly known only in a fossil state, are, with the ex- 

 ception of one from Mazatlan, found in the Philippine 

 Islands, and first collected there by the late Mr. Cuming. 



The gi-adation in the several genera of Fissurellidaj 

 is marked in the jiosition of the fissure. In Fissurella, 

 it is simply a hole in the apex ; in Ccmoria it is just 

 in front of the apex, leaving it entire and generally 

 pointed, and being vaulted over by a little septum on 

 the inside; in Cranopsis tlio septum half covers the 

 fissure on the inside, but the latter is removed to half- 

 way between the apex and the margin ; in Kimula the 

 fissure is in a similar situation, but has no internal 

 septum ; then in Emargimda the fissure, commencing 

 about halfway down the dorsal ridge, remains open to 

 the margin and graduates through many species in 

 commencing nearer and nearer to the margin until 

 it becomes lost in an almost imperceptible sinus. In 

 the genus Zeidera, there is an internal septum near the 

 posterior margin and a fissure, like that of Einarijiiudu, 

 in the anterior margin. 



(Fi 



b. Ml 



specit 



RninLA EXQUisiTA. Rim. testd ovato-oblongd, alM, 

 moderate elevatd, costis radiantibus tenuibus, et liris 

 concentricis concinne cancellatd ; dorso arcuato, 

 apice valde retrorso. 



The exquisite Kimula. Shell ovate-oblong, white, 

 moderately elevated, neatly cancellated with thin 

 radiating ribs and concentric ridges ; back arched, 

 apex turned far back. 



A. Adams. Proc. Zool. Soc, 1851. 

 Hab. Several of the Philippine Islands. 



This is the largest of the species and of exquisite 

 sculpture. 



Species 2. (Mus. Brit.) 



liiMiiLA Cu.MiNGii. Rim. testa parvd, fulvd, ovaid, 

 costis radiantibus rotiindis concentric!: rugatis et 

 liris concentricis cancellatd; dorso elevato ; apice 

 acuti' recurvo. 



('i'MINg's KiMULA. Shell small, fulvous, ovate, cancel- 

 lated with rounded concentrically wrinkled ribs 

 and concentric ridges ; back elevated ; apex sharply 

 recurved. 



A. Adams. Proc. Zool. Soc, 1851. 



Rimula echinata, Gould. 



Ilab. Kastern Seas. 



Species 3. (Mus. Brit.) 



Rimula propinqua. Rim. testd parvd, alba, viinule 

 cancellatd ; costellis radiantibus prominentionbiif , 

 duabus versils marginem anticum convergcntibus : 

 dorso elevato ; apice acuto, recurvo. 



The neighbouring Rimula. Shell small, white, 

 minutely cancellated; radiating ribs more pro- 

 minent ; two converging towards the anterior 

 margin ; back elevated ; apex acute, recurved. 



A. Adams. Proc. Zool. Soc, 1851. 



Ilab. Calapau, Philippines. 



Species 4. (Mus. Brit.) 



Ki.MULA carinata. Rim. testd parvd, alba, costellis 

 tenuibus, confertis radiatd, interstitiis minutissime 

 foveolatis ; apice valde recurvio, planulatim 

 rarinato. 



The keeled Rimula. Shell small, white, rayed with 



December, 1873. 



