6 AET. 1. — CHARLES ELIOT: 



brighter yellow scattered over the back. The rhinophores are 

 long, with the lower part white and the upper part brown. The 

 branchiae are whitish and as described below. 



The alcoholic specimens are about 18 mm. long and 14 mm. 

 broad. The back is covered with warts of various sizes, contain- 

 ing spicules set in a stellate arrangement. The warts are quite 

 separate from one another and net confluent. The general colour 

 is semitransparent yellowish white, but the tips of the warts are 

 often a bright opaque white and in one specimen the branchial 

 pocket is edged with a border of the same colours. The mantle 

 margin is ample and crinkled. The rhinophores are long ; their 

 pockets are not protected by special tubercles. The opening for 

 the branchiae appears externally not as a circle but as a crescent 

 with the horns pointing anteriorly. The whole of the upper part 

 acts as one valve and shuts down on the branchiae. In one 

 specimen however the branchiae are protruded and very long, 

 extending beyond the sides of the bedy. They are 1 3 in number 

 and set in a single transverse line. Though apparently simply 

 pinnate, most of the plumes prove on examination to be bipinnate 

 and as those near the ends of the row have their bases united, 

 they might be called tripinnate. The tentacles are represented by 

 two ridges above the mouth. The foot is grooved in front 

 and apparently notched but so contracted in both specimens that 

 its structure is difficult to see. 



There is no labial armature in the buccal parts. The radula 

 has as a maximum formula about 50x65. 0. 65. It consists of 

 rather stcut hamate teeth often with a kink in the back and 

 often with broken tips. The outermost teeth are shorter than the 

 others and sometimes jagged but not regularly pectinate. 



The stomach lies wholly outside the liver, which is brownish 

 grey and coated with a thick yellow layer of hermaphrodite 

 gland. The central nervous system is markedly granulate but 

 the ganglia are distinct. The commissures are short and stout ; 

 the buccal ganglia are large and close together. The mucus 

 gland is large and clear white in colour ; the spherical spermato- 

 theca and elongate spermatocyst are both grey and conspicuous 



