398 SIR C. ELIUT OX NL'UIB-UANCHS [MnV. 1, 



described markings fairly well preserved but all white. The form 

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

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

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

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

 is rounded and grooved, the upper lamina, being connected with 

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

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

 ai-)nature consists of two yellowish plates composed of rather lai'ge 

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

 shoi't thick hook, but in many cases this degenerates into a 

 simple triangle. The formubi, of the radvila 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 iri-egular nnd jagged. 



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

 Chr. earned, and its coloration is not altogether dissimilar to the 

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

 (raimavd, though identification is uncertain in the aVjsence of 

 information as to the radula of that species. 



16. Chromodoris ixconspicua. 



Chromodoris inconsjncua Eliot, Abstr. 1'. 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 numerous opaque 

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

 rhinophores black ; the gills greyish. It was stifi' and .sluggish, 

 and somewhat resembled a PJti/llidla. 



The alcoholic specimen is of a unifoi'm grey, 18 mm. long, 



7 broad, and 6 high. The mantle-edge is narrow all round, 

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

 undulated. The pockets of the rhinophores and bi-anchia^ ha^'e 

 raised edges. The latter are small, 8 in number, and apparently 

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

 grooved. The tentacles are reti-acted. The labial armature is 

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

 i-adula is also transpai'ent. There ai-e no rhachidial thickenings. 

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



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

 also broader than the rest, which are slender, erect, slightly 

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

 they appear bifid or sometimes trifid. Below these clefts ai'e fi-om 

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

 teeth are tall and slender, with 3 or 4 denticles on the apex, but 

 otherwise smooth. 



