34 ZOOLOGY OF THE VOYAGE OP H.M.S. SAMARANG. 



tibus superne concavis, infra quadriliratis, liris duabus superioribus compresso-squamatis, squamis supremis 

 grandibus, erectis, spinosis ; nigricante-fusca, liris quatuor albis, aperturse fauce ceerulescente-alba. 



Hab. China Sea. 



Several examples of this species, differing materially from any hitherto described, were 

 collected in the China Sea, with scarcely any variation of form or colouring. 



15. COLUMBELLA, Lamarck. 



The animal of Colwmbella has a long and somewhat narrow vertically depressed head, 

 with the eyes sometimes placed on the outer side of the base of the tentacles, and sometimes 

 on the outer side of reflected prominences, situated at some little distance from the head. 

 The siphon, long and directed forwards, is considerably dilated at the anterior extremity. 

 The foot is short and pointed posteriorly, and bears a small, semitransparent, horny oper- 

 culum, with concentric elements. Anteriorly the foot is often considerably produced beyond 

 the head, where it forms a long, thick, flattened, fleshy, finger-like process. Sometimes it 

 is expanded laterally, when it is truncate anteriorly and furnished with two lateral angular 

 processes. 



1. Columbella TiENiATA. PI. XI. Fig. 19. Col. testa fusiformi-ovata, anfractibus plano-convexis, 

 lsevibus, nitentibus, apertura parva, labro incrassato, superne sinuato ; rufescente-carnea, maculis quadratis 

 rufo-fuscis tamiata. 



Hab. Borneo. 



There are two fillets of square red-brown spots on each whorl, the lower of which is 

 concealed in all but the last whorl. 



2. Columbella semipunctata. PI. XIII. Fig. 7. Lamarck, Aniim sans vert. (Deshayes 5 edit.) 

 vol.x. p. 267. 



Hab. Shores of Borneo. 



The animal of this species has a white head, marked with a series of large orange 

 blotches on the upper surface ; the siphon is of a deep orange colour at the anterior extre- 

 mity, and is ornamented with two rows of large, oval, orange spots, placed alternately with 

 each other. The eyes are black ; the tentacles are dead white, and deep orange at their 

 distal extremities ; the body is handsomely marbled w T ith orange and yellow, the latter colour 

 forming a loose open net-work, with irregular, lozenge-shaped meshes. 



3. Columbella FULGtiEANS. PL XVII. Fig. 8. Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x, 

 p. 272. 



Hab. From the shingly beach of a small islet off Billiton. 



The animal of Columbella fulgurans has the head white, covered with large, black, oval 



