398 SIR C. ELIOT OX NCDIKRANCnS [Mar. 1, 



described markings faii'ly well presei'ved but all white. The form 

 is high and stout. The tail projects 6 mm. behind. The mantle- 

 edge is narrow and veiy thick : it measures about 3 mm. over the 

 head and tail, and 2 mm. at the sides. The pockets of the rhino- 

 phores and branchiae are not at all raised. The front of the foot 

 is rounded and grooved, the upper lamina being connected with 

 the base of the tentacles ; but, as in many other cases, it is hard 

 to be svire that this feature is not due to contraction. The labial 

 armature consists of two yellowish plates composed of rather large 

 elements of vaiying size. The most perfect form appears to be a 

 short thick hook, but in many cases this degenerates into a 

 simple triangle. The formula of the i-adula is about 65 x 70.0.70. 

 The teeth are crowded over the small naked rhachis. They are of 

 the bifid type, and have usually 3-5 denticles under the two 

 prongs. These denticles are smaller in the inner half of the rows, 

 where many teeth are quite smooth, and larger in the outer half. 

 The innermost teeth have generally, but not always, a denticle on 

 the inner side : the outermost are irregular and jagged. 



The buccal parts of this animal ally it to Chr. hilaris and 

 Ch?'. Gcirnea, and its coloration is not altogethei" dissimilar to the 

 former. I think it is probably the Chr. magnifica of Quoy and 

 Gaimard, though identification is uncertain in the absence of 

 information as to the radula of that species. 



16. Chromodoris inconspicua. 



Chromocloris inconsjncua Eliot, Abstr. P. Z. S. 1904, No, 4, 

 p. 15, March 8. 



One specimen from Zanzibar Harbour, dredged in 5 fathoms. 



The living animal was translucent white, with numei'ous o[iaque 

 white spots, and a few brown ones in the middle of the back ; the 

 rhinophores black ; the gills gi'eyisli. It was stiff and sluggish, 

 and somewhat resembled a Phyllidia. 



The alcoholic specimen is of a uniform gi'ey, 18 mm. long, 



7 broad, and 6 high. The mantle-edge is narrow all I'ound, 

 including the parts above the head and tail, and is somewhat 

 undulated. The pockets of the rhinophores and branchiae have 

 raised edges. The latter ai-e small, 8 in niimbei-, and apparently 

 set in a complete circle. The anterior end of the foot is slightly 

 grooved. The tentacles are I'eti-ncted. The labial ai'matui-e is 

 colourless, and consists of small thick hooks, sometimes bifid. The 

 radula is also transpai'ent. There are no rhachidial thickenings. 

 The innermost teeth ai'e unusually broad and squai-e ; they bear 



8 denticles inside and 7 outside. The next two or three are 

 also broader than the rest, which are slender, ei'ect, slightly 

 hamate, with one or sometimes two almost vertical clefts, so that 

 they appear bifid or sometimes trifid. Below these clefts are from 

 3 to 5 long distinct denticles on the outer edge. The outermost 

 toeth ai-e tall and slender, with 3 or 4 denticles on the apex, but 

 otherwise smooth. 



