12 AKT. 1. — CHARLES ELIOT : 



are similar but less conspicuous markings on the sides of the 

 foot and upper surface of the tail. The anterior margin of the 

 foot is grooved with a slight notch in the middle of the upper 

 lamina. The rliinophores are rather long. The perfoliations are 

 black : the lower part is striped with black but shows a good deal 

 of yellow. As preserved the branchial pocket is elliptical and 

 not at all stellate. The branchiae may be reckoned as 4 or 6, 

 the posterior pair being so deeply cleft that they may be count- 

 ed as two pairs though superficially they appear as one. There 

 is a series of black dots down the main rhachis and the finer 

 ramifications are black, so that the whole appearance of the 

 branchiae is unusually dark. 



The radula is large and strong, with a formula of 75 X about 

 65. 0. 05 in the larger specimen. In the front part of the radula 

 the rows bend downwards towards the middle where the teeth 

 are smaller and crowded, so that there sometimes seems to be a 

 central tooth, though there is really none. The majority of the 

 teeth are simply hamate and increase in size as they are further 

 from the rhachis, but at the outer ends of the rows are 2-3 

 plate-like teeth, generally spatulate in shape but not pectinate or 

 serrulate. The innermost teeth are often, but not invariably 

 bifid. 



The membranes surrounding the intestines are blackish, more 

 >:o in one specimen than in the other. The stomach lies in a 

 cleft of the liver but is not surrounded by it. The genitalia bear 

 no armature. 



I think this specimen is best referred to H. graphlca, a 

 species created but not very fully described by Basedow and 

 Hedly. But it is possible that it may be at the same time a large 

 and dark variety of H. formosa originally described from Japan. 

 It is very like Bergh's figure of this species in Sempers Reisen 

 pi. Lxxxi, fig. 13 ; and in specimens of //. formosa which I have 

 examined, I have found that the external teeth are not invariably 

 pectinate. It has also many resemblances to 11. punctata Farran. 



