INDIAN NUDIBRANCHIATE MOLLUSCA. 135 



produced behind ; there are no jaws nor collar, but it is provided with a large fleshy 

 tongue, which sustains the spinous membrane described above. The spines are minute 

 in comparison with the great size of the tongue. 



The salivary glands open rather far forward into the buccal organ. They are tubular, 

 a little folliculated at the base, and placed on each side of the median line. The oeso- 

 phagus passes from the upper surface of the buccal organ : it is rather wide and long, 

 and tapers slightly as it penetrates the anterior surface of the liver, which is small and 

 conical, with the base forwards, and hollowed a little. The intestine issues from a cleft 

 in the left side of the liver, and, passing across almost to the opposite side, arches 

 backwards, and terminates in a nipple-formed anus in the centre of the branchial 

 circle. 



The cerebroid, branchial, and pedal ganghons are fused into one mass, which is placed 

 on the dorsal aspect of the buccal organ. The commissure has consequently to pass 

 round this organ to complete the nervous collar, and is therefore extremely long. The 

 ganglionic mass is made up of a multitude of strongly defined globules, varying in size, 

 and giving to the organ a very striking appearance. The eyes are almost sessile on the 

 anterior portion of the mass. 



Kalinga ornata, n. sp. (PI. XXXII. figs. 7, 8, 9, 10.) 



Body broadly oval, rather enlarged and rounded behind, not produced into a tail ; 

 skin coriaceous, but rather soft, covered on all the upper surface with distant, soft, pa- 

 pillated tubercles, of various sizes, having the appearance of little tufts. Cloak rather 

 broad, forming a ridge along the side, and produced over the head into twelve or four- 

 teen close-set, linear or subclavate, fimbriated or papillated processes ; six or seven larger 

 but similarly branched processes run down each side on the ridge of the cloak, the 

 ridge itself terminating at each side behind the branchiae in one of these processes. The 

 colour of the surface is white or yellowish, varied with tints of green and rose-colour on 

 the anterior portion ; the tubercles white, with frequently a rose-coloured or crimson 

 spot in the centre : the frontal processes are white ; those down the sides crimson, with 

 yellow tips. Dorsal tentacles rather small, clavate, or subfusiform, tapering to a point 

 above ; the laminae divided by a narrow groove in front : the base of the tentacles and 

 upper part of the laminated portion are crimson ; the intermediate space and tips white : 

 the sheaths are subglobose, surrounded near the margin with crimson tufts. The sides 

 of the head are expanded into large oval discs, which are adherent to the under surface 

 of the mantle ; the oral tentacles, which are small and flattened oval processes, spring 

 from the anterior margin of these discs. Branchial plumes generally five, large and 

 spreading, placed at some little distance from the anus and from each other ; three or 

 four times pinnate, white, with the pinnae veined with crimson. Foot very broad, 



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