390 jSIR C. ELTOT ON XUDIBRANCHS [Mai\ 1, 



ai-mature is formed of tAvo large strong triangular plates, almost 

 united into a ring, dark brown, and formed of a mass of long 

 hooks. The rhachis of the radula (PI. XXIY. fig. 1) beai-s lozenge- 

 shaped thickenings, on each side of which are about 45 teeth. 

 The number of ti'ansverse rows is about 70. The innermost teeth 

 have a large denticle on the inner side, and three small ones on 

 the outer ; the rest are simply hamate, with 8-10 minute denticles ; 

 the outei-most irregular and denticulate on the apex in the younger 

 rows, biit in the older the denticulations seem to have been 

 worn ofi'. 



5. Chromodoms splexdexs, 



Chroinodoris splendens Eliot, Abstr. P. Z. S. 1904, No. 4, 

 p. 15, March 8. 



[? =Chr. splendida Angas, Journal de Conch, i. 1864, p. 55.] 



Two specimens from Chuaka, East Coast of Zanzibar. The 

 notes on the living animal are as follows : — " General colour 

 somewhat miscellaneous, being pi-oduced by thick collections of 

 purple and white dots, in difierent propoi'tions in different places. 

 A vivid orange border round the whole body. Underside milk- 

 white. Mantle ample. Gill-pocket fairly large, gills purplish." 



The alcoholic specimens are of a uniform dirty yelloAV, and of 

 a,bout the same size. Length 40 mm., breadth 13, height 10. 

 The free poi'tion of the tail is 6 mm. long, but is entirely covered 

 by the mantle, the free margin of which measures 7 mm. behind 

 and 5 mm. at the sides and head. The rhinophores are large. 

 The edge of the branchial opening is slightly i-aised. The total 

 number of branchial plumes is 27, but of these three seem to be 

 accessory i-amifications and not independent branchife. The circuit 

 is open behind, and the two ends are turned inwards in a spiral. 

 The anterior plumes are large, and those in the spiral very small, 

 so that the living animal shows ten or twelve bi'anchife. The foot 

 is rather wide, with thin margins, and is dilaterl and deeply 

 grooved in front. The tentacles ai-e distinct. The inconspicuous 

 labial armature consists of two small yellowish plates, composed 

 of fairly long bent rods, most but not all of which are bifid. The 

 radula is also yellowish, with about 70 X 60.0.60 for formula. On 

 the rhachis ai-e indications of triangulai- thickenings, but the base 

 of the triangle is not distinct. The innermost teeth bear three or 

 foui' denticles on the inner and five on the outer side. The rest 

 are hamate, I'ather ei'ect, with six denticles under the hook de- 

 creasing in size downwards. The outermost show less difierence 

 fi-om the rest than usual, and are long, erect, with about four 

 denticles on or near the apex. 



I think it very probable that this is the animal described as 

 Goniodoris splendida in the ' Journal de Conchyliologie,' and I 

 have indicated this probable identity in the name. The scheme 

 of coloration is very similar, and the ample mantle, large rhino- 

 phores, and numei'ous branchife are also points of resemblance, 

 but the purple in the present specimen is distributed in the form 



