24 AET. 1. — CHAELES ELIOT: 



of the back. The rim of the pocket is thin, slightly raised and not 

 at all tuberculate. The branchiae are brown, 18, strong in textnre 

 and, though only simply pinnate, form a large bunch. There are 

 no traces of ridges on the dorsal surface, between the tubercles 

 or elsewhere. 



The most remarkable feature of this ani malis the rhinophorial 

 pocket which has only a single small aperture about 2 mm. wide. 

 This leads into a relatively large chamber, the floor of which mea- 

 sures about 5 mm. X 3.5 mm. and is brownish, like the dorsal 

 surface. From this aperture rise two stout rhinop hores with 

 bases some distance apart and tips inclined towards one another. 

 The tips are light yellow, the lower part brown. It is not easy 

 to see how such large rhinophores can emerge together out of so 

 small on opening. 



The labial armature consists of a yellowish ring of rods 

 which, though sometimes bent or wavy, are not definitely hooked 

 at the tip. The radula is dark brown and of a somewhat un- 

 usual appearance. The rhachis is very wide and all the rows 

 curve considerably downwards so that the anterior rows, which are 

 very long, almost surround the posterior rows which are very 

 short. 



The radula is hard to count on account of this unusual 

 curvature and the occasional confusion of two or three rows with 

 one another but the formula is about 110x50 + 1.0.1+50 in the 

 longest rows. But many rows are quite short. The shape of 

 the teeth somewhat resembles that shown in Bergh's figures for 

 Sphaerodoris laevisP The first laterals are divided into two parts. 

 The outer or upper part is spatulate but jagged at the top. On 

 the inner side it bears about 5 inconspicuous denticles. The 

 other part of the teeth is split into at least 9 long transparent 

 denticles. The other teeth are tall and erect, bearing 20-30 

 denticles which decrease in number on the teeth near the end 

 of the rows. In a few rows the outermost teeth are quite 

 smooth. 



There is no trace of a stomach outside the the liver. The 



1) Sse Malac. Untere. Heft, xvii pi. 88, fig. 3. 



