496 Zoological Bociety : — 



which I have never been able to understand ; that is their apparent 

 blindness to any external object that is presented to them from the 

 outside of the tank, when it is offered to them on a level with their 

 eyes or apparent range of vision, I have attempted to disturb them 

 with my hand, with a red handkerchief, and with many other bodies ; 

 but I have never observed them show the slightest idea of there 

 being any danger, or even take the slightest notice of the approach- 

 ing body ; yet they are easily disturbed if the object is so presented 

 to them as to appear to descend towards them. 



Note on the Lern^a cyclopterina occurring in the 

 Gills of the Cyclopterinus spinosus, a Fish from 

 Greenland. By W. Baird, M.D., F.L.S., etc. 



In the 'Fauna Groenlandica,' O. Fabricius shortly describes a 

 species of Lerncea as occurring in the Cyclopterinus spinosus. Kroyer 

 in his ' Tidskrift ' figures the same parasite ; but his figure varies so 

 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 figure 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 Lernrea ; and he 

 suspects that this is only 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 cither ; 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. 



Description of a New Species of Cancer obtained at 

 Madeira. By James Yate Johnson. 



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- 



