RICINULA. 



Plate V. 



(Specimens magnified to twice their natural length.) 



Species 33. (Mus. Cuming.) 



RiCINULA CONTRACT.*. Ricin. testa mihfusifortni-ovatd, 

 utrinque attenuatd, t)asi contractu, longitadlnaliter oh- 

 lique plicato-costatd, tranjsversim liratd et striatd; luteo- 

 fuscescente, apertnreB faiwe albd. 



The contracted Ricikula. Shell fusifonnly ovate, 

 attenuated at both ends, contracted at the base, lon- 

 gitudinally obliquely plicately ribbed, transversely 

 ridged and striated ; yellowish brown, interior of the 

 aperture white. 



Hah. Panama, and St. Elena, West Columbia (under 

 stones) ; Cuming. 

 Rather more than usually produced and contracted at 



the base. 



Species 33. (Mus. Cuming.) 



RiCINULA zonata. Riciii. icstd ahbreviato-ovatd, solidd, 

 idrinque lougitndinatiter nodoso-pUcatd ; albd, zonis 

 cceruleo-nigris pulcherrime cingulatd, columelld labrique 

 margiue interno lacco-piirpums. 



The zoned Ricinula. Shell shortly ovate, solid, at- 

 tenuated at both ends, longitudinally nodosely plicated 

 throughout ; white, very prettily ench-cled with blue- 

 black zones, columella and inner edge of the lip lake- 

 pm-ple. 



Hab. Charles Island, Gallapagos (under stones at low 

 water) ; Cuming. 



Easily distinguished by the marked style of its painting. 



Species 34. (Mus. Cuming.) 



Ricinula ocellata. Ricin. testa ovatd, ventricosd, wiidiqm 

 subtilissime cancellatd, anfractibtis superne angulatis, 

 longiiudinaliter costatis, costis fortibus, distantibus, 

 compresso-tuherculatis ; albidd, lineis nigris, castas 

 super ocellatis, cingulatd. 



The ocellated Ricinula. Shell ovate, ventricose, very 

 finely cancellated throughout; whorls angulated round 

 the upper part, longitudinally ribbed, ribs strong, dis- 

 tant, compressly tubercled ; whitish, encii-cled with 

 black lines, which are oceUated on crossing the ribs. 



Hab. ? 



The detail of sculptiu-e and disposition of colour are ex 

 tremely characteristic in this species. 



Species 35. (Mus. Cuming.) 



Ricinula concinna. Ricin. testd siibfimformi-ovaid, basi 

 contractd, spird acuminatd ; anfractibus concentrice 

 pUcato-costatis, costis teimissime nodiferis ; albd, fasciis 

 fuscis, nodis albis, compicue cinctd, lahri limbo aurantio- 

 rnfo. 



The pretty Ricinula. SheU somewhat fusiform, ovate, 

 contracted at the base, spire acuminated ; whorls 

 concentrically flatly ribbed, ribs very finely noduled ; 

 white, conspicuously encircled with bi'own bands, in 

 which the nodules are white, edge of the lip orange- 

 red. 



Hab. Cagayan, Island of Mindanao, Philippines (under 

 stones at low water) ; Ciuning. 



Alternately encircled with brown and wliite bands, in 

 the former of which the nodules are white, and have a very 

 striking appearance. 



Species 36. (Mus. Cuming.) 



Ricinula histrio. Ricin. testd ovatd, medio gibbosd et 

 tuberculntd, transversim subtilissime striatd et obtuso- 

 Uratd ; luted, lineis rufescentibns, maculisque nigris 

 cingulatd et variegatd, columelld labrique margine in- 

 terno lacco-purpurei.i. 



The harleuuin Ricinula. Shell ovate, gibbous and 

 tuberculated in the middle, transversely very finely 

 striated and obtusely ridged ; yellowish, encircled 

 and variegated \\\i\\ faint red lines and conspicuous 

 black spots, columella and inner edge of the lip lake- 

 purple. 



Hab. Island of Bm-ias, Philippines (under stones at low 

 water) ; Cuming. 



A stout hump-backed shell, strongly tuberculated, and 

 strikingly variegated in colom'. 



Species 37. (Mus. Adarason.) 



Ricinula iostoma. Ricin. testd ovatd subobesd, longiiu- 

 dinaliter concentrice plicato-costatd, costis nodulis ob- 

 tusis decnssatis ; albidd, costarum nodulis atris, colu- 

 melld et aperturcB fauce violaceis. 



The violet-mouth Ricinula. Shell ovate, rather stout, 

 longitudinally concentrically plicately ribbed, ribs 

 crossed with obtuse nodules ; whitish, nodiJes of the 



September, 1846. 



