16 ABT. 1. — CHABLES ELIOT: 



violet-grey. The branchiae are six and tripinnate : their main 

 axes are reddish below ; the perfoliations are violet-grey ; in all 

 parts there are numerous dark dots. The pocket is indistinctly 

 six-toothed. The oral tentacles are large and grooved. 



A drawing of the living animal represents it as brownish 

 yellow, the medio -dorsal area being darker than the marginal 

 region whicn is bounded by a still lighter border. 1 ^ There are 

 five irregular whitish spots on various parts of the back. The 

 whole of the dorsal surface, whatever its colour, is thickly spot- 

 ted with minute dark purplish dots. The branchiae are greyish 

 white ; the rhinophores have yellowish stems and violet-grey 

 perfoliations. The mantle edge is much undulated and wrinkled. 



The labial cuticle bears an armature of rods, which though 

 of a faint grey and not conspicuous is yet distinct. It consists 

 of two longish plates, which are thicker and darker at the ends 

 where they are nearest each other. The radula varies from 

 35x80.0.80 to 57x135.0.135. The outermost tooth has no hook, 

 but bears irregular denticles on the apex and also occasionally 

 on the side. The outermost tooth but one bears a hook which 

 is reduced, but still clear, and below it a few irregular denticles. 

 The remaining teeth are hamate and rather slender. 



The oesophagus is rather large. The stomach lies in a cleft 

 of the liver, but is not enclosed by it. Its walls are thin, not 

 muscular, and slightly laminated internally. The liver is brown 

 and traversed internally by unusually large tubes and passages. 

 It is covered by a thick yellowish layer composed of the 

 hermaphrodite gland. The general colour of the intestines is 

 pinkish. 



The blood gland is purplish grey and composed of two parts, 

 of which the anterior is larger. The ganglia of the central 

 nervous system are yellowish and fairly distinct. The common 

 commissure is very thick. The eyes are set on short stalks. 



The ampulla of the hermaphrodite gland forms two or three 

 thick convolutions. The albumen and mucus glands are of mode- 



1) But though the ground colour of the border is lighter, it is sometimes so thickly studded 

 ■with purplish dots that its general effect is darker. 



