366 SIR C. ELIOT ON NUDIBRANX'HS [DeC. 1, 



the peculiar tubercles of T. villosa are absent; the general 

 texture, though flexible, is not quite soft, but rather stiff; the 

 back is minutely granulate but not harsh. The rhinophore 

 pockets are raised and have jagged edges. The branchial pocket 

 is raised with round smooth edges, turned veiy distinctly 

 outwards. The branchite are six and tripinnate. The anterior 

 pair are smaller than the others. The most charactei'istic feature 

 of this specimen is the foot, which has a wide thin margin all 

 round, dilated anteriorly into tentacular expansions, similar to 

 those found in the Aeolididae, and 3'5 millimetres long. The 

 front part seems to be grooved in the middle and the upper 

 lamina to be attached to the head on each side. Admitting that 

 it is dangerous to speak positively of such characteristics on the 

 strength of a possibly distoi'ted alcoholic specimen, I tliink it 

 is clear that the antei-ior portion of the foot must be expanded in 

 a way unique among the hitherto desciibed species of Dorididje. 

 The tentacles are thin and digitate. No labial plates were 

 discernible. The buccal mass was large for the size of the animal. 

 The formula for the radula appeared to be about 45.0.45 x 38. 

 The teeth are the ordinary simple hamate type ; the innermost 

 are not smaller ; the 3-5 outermost are degi'aded but are not 

 serrulated. The stomach is large and free, laminated internally. 

 There seemed to be traces of an inconspicuous armature of 

 transparent scales on the glans, but I was not able to satisfactorily 

 make out its arrangement. 



The dorsal spots in this specimen seem to resemble those 

 described by Bergh in P. mauritiana, but this animal must be 

 specifically distinct from that form. 



8. Peltodoris aurea, sp. n. 



Three specimens captured near Wasin. 



The living animal is flat, with an ample mantle which extends 

 far lieyond the head and tail. The texture is not hard but also not 

 flabl )y ; one specimen is much stiifer than the otheis. The general 

 colour is a rich light orange, due to the back being covered with little 

 flat orange warts on a sandy ground. At regular intervals round 

 the mantle-edge are spots of dull violet ; there is also a spot just 

 in front of the gills and one behind the rhinophores. The under- 

 side is yellowish with a few brown spots. The dimensions are 

 2'2 centimetres length, and 1*4 centimetres breadth. Both the 

 rhinophore and gill-pockets are somewhat projecting, but though 

 they rise among tubercles they cannot be described as tuberculate. 

 The gill-pocket is large, somewhat contracted in the middle and 

 expanded at the sides, so that the 8 tripinnate gills fall in two 

 bundles, right and left. The foot is 1"6 centimetres long and 

 only 3 millimetres broad ; grooved and notched in front. The 

 tentacles are small and button-like. There is no labial armature. 

 The radula is small and fragile : it consists of twenty rows, each 

 containing about 25 white, simply hamate teeth ; the innermost 

 and outermost are somewhat, but not conspicuously smaller. The 



