240 MR. J. Y.JOHNSON ON A NEW CRAB FROM MADEIRA. [June 1 1, 



much from a specimen lately added to the collection of the British 

 Museum, that I think it advisable to give a short account of it. 



Kroyer mentions that the specimens from which he has figured the 

 species are young individuals ; and to this, in all probability, is owing 

 the discrepancy between his figui'e and the specimen in the possession 

 of the Museum, which evidently is an adult. The neck agrees pretty 

 well with his figure, but the head in our specimen is strongly tuber- 

 cled. The body is somewhat thin and elongated in Kroyer' s figure. 

 In the Museum specimen it is shorter and much thicker, and at the 

 bend of the body from which the ovaries are sent off, there are on 

 each side two strong tubercles. Kroyer does not figure the ovaries ; 

 it is evident, therefore, that the specimens in his possession, and from 

 which his figures were made, are immature. The ovarian tubes, as 

 seen in the Museum specimen, are beautifully coiled in a spiral, are 

 strong, and marked with small bands of a brown colour. M. Milne- 

 Edwards, in mentioning this species, says that Kroyer does not figure 

 the cephalic horns which distinguish the genus Lerncea ; and he 

 suspects that this is onlj^ owing to a mutilation of the individual 

 observed by that naturalist. It is curious that I have not been able 

 to discover the cephalic horns in our specimen either ; but upon a 

 close examination there is to be seen a rupture of the parts to which, 

 if they existed, these horns would have been attached. In all proba- 

 bility they have been torn away when the specimen was dissected 

 from the fish. 



4. Description of a New Species of Cancer obtained at 

 Madeira. By James Yate Johnson. 



(Plate XXVIII.) 



Cancer bellianus, sp. n. 



Carapace of a pale brown, suffused and spotted with red ; its 

 surface rough, with small tubercles, and strongly marked with the 

 regional divisions ; transversely oblong, with the middle portion 

 moderately elevated. Latero-anterior margin divided into ten qua- 

 drate lobes, alternately broad and narrow ; the outer edge of each 

 lobe armed with three teeth, of which the middle one is larger. On 

 the broader lobes the lateral teetli are frequently bifid. The hind- 

 most lobe on each side has only one principal tooth, but there are 

 three or four small ones. This lobe passes into the posterior marginal 

 line of the carapace, and this line is beaded with a series of tubercles. 

 The front of the carapace has two dotted lobes or flattened teeth, with 

 a narrow triangular tooth projecting between and beyond them. The 

 superior margins of the ocular orbits are denticulated, and have a 

 strong triangular tooth over the inner canthus, which does not project 

 quite so far as the two principal lobes of the interocular front. The 

 margin between the two superior fissures is denticulated, but has no 

 predominating tooth. Inferior margin of the ocular orbit armed with 

 three teeth, of which the innermost is large and stout. The external 



