OPISTHOBRANCHIATE MOLLUSCA. 347 



Kalinga ornata, Ald. and Hanc. Plate III., figs. 23, 24. 



A small specimen, length 2"5 centims., was taken 10 miles north of Cheval Paar. 

 Professor Hkrdman has made the following note on its coloration when alive : " Pale 

 grey, nearly transparent, with red internal organs showing through, and beautiful red 

 papilke on surface of body. Rhinophores lamellated at tip and coming from fringed 

 sheaths. Colourless papillae on body. Branchise tri-pinnate." 



Bergh (9, pp. 959 to 962) has given a full account of the anatomy of this species with 

 the exception of the radula, which was missing in his specimen owing to the pharynx 

 having been everted through the front of the foot. Curiously enough, Professor 

 Herdman's specimen had suffered an almost similar misfortune, the whole buccal 

 mass having been everted through the mouth opening, so that the radula lay along 

 the under-surface of the everted organ. The teeth (Plate III., figs. 23 to 24) are very 

 numerous and all similar. Their shape is remarkable, each tooth having three long 

 curved pointed cusps. They are arranged in about 130 rows, the radular formula being 

 90-0-90. There is no median tooth, but the rachis bears at intervals a few very 

 small spurious teeth. The innermost tooth on each side differs slightly from the rest 

 in having the inner spine slightly shortened ; the outermost tooth is a flat plate, the 

 2nd and 3rd have traces of a single hook, the 4th has two hooks, and the 5th three. 

 The teeth increase in size gradually from the margin inwards to the centre. The 

 teeth in the specimen examined were widely separated from each other, perhaps 

 owing to the stretching of the radula. 



II. TECTIBKAJNCHIATA. 



There are in the collection 17 species of Tectibranchs, 7 of which are here 

 described as new to science. 



Of those already known, two, Philine aperta and Doridium depictum, are well- 

 known Atlantic or Mediterranean species; two, Aplysia cornigera and Dolabrifera 

 maillardi, have been identified on the strength of the resemblances of the shells, as 

 nothing seems to have been published on the animals themselves ; the rest are fairly 

 well-known Indian Ocean or Pacific species. The list of species is as follows : 



Philine aperta, Linn. Dolabrifera maillardi, Desh. 

 Doridium marmoratwn, Smith. rnarginata, n. sp. 



depictum (Ren.), var. Dolabella scapula, Martyx. 



Aplysia cornigera, Sow. Notarchus indicus, Schweig. 



elongata, Pse. eeylonicus, n. sp. 



,, intermedia, n. sp. Pleurobranchcea brocki, Bgh. 



Phyllaplysia albomaculata, n. sp. Pleurobranchus cilrinus, R. and L. 



pelludda, n. sp. ,, burnetii, n. sp. 



Aplysiella mollis, n. sp. 



In an Appendix, I place : 



Onchidium verruculatum, Cuv., and Marsenia perspicua (Linn.). 



2 y 2 



