BRITISH STALK-EYED CliUSTACEA. 105 



shape is rectangular at its posterior margins, and slightly curved 

 on its anterior margin which is armed with curved teeth, the 

 outer ones being long. The part between the orbits is occupied 

 by four slight lobes. 



The anterior pair of legs are armed with unequal forceps, the 

 chelee being hooked. The wrist has a stout and somewhat curved 

 spine. The remaining legs are attenuated — hence its specific 

 name. This species differs from all others in the genus in the 

 great length of the external antennae. 



The colour of the carapace is reddish brown ; one in Mr. 

 Carrington's collection being of a very pale tint, with regular dis- 

 tinct blotches of Venetian red on the surface of the cephalo- 

 thoracic region. 



Bell has recorded its occurrence on the Cornish coast, 

 Plymouth, and Swansea. We obtained it from Jersey in 

 November, 1880, and also from the English Channel, off the 

 Sussex coast in March, 1881. It has further been recorded from 

 Falmouth and Penzance. It is evidently a deep-water species, 

 and is undoubtedly the rarest British example of this genus. 



Portunus carcinoides, Kinahan. 

 On the 1 2th December, 1856, before a meeting of the Dublin 

 Natural History Society, the late Dr. J. K. Kinahan read a paper 

 upon certain decapodous Crustacea occurring at Valentia Island, 

 Co. Kerry, which is printed in the 'Natural History Eeview, 

 vol. iv. (1857). In a foot-note, on p. 66, he describes and names 

 Portunus carcinoides as follows : — " Along with the above species 

 (P. arcuatus), three specimens of a Portunus occurred, which, 

 though neighbouring to P. corrugatus, seem to belong to some 

 other species. I have, therefore, ventured to describe it pro- 

 visionally, under the name of P. carcinoides (from its resemblance 

 to Carcinus mcenas), as follows: — Carapace smooth, without 

 raised ridges, regions marked out by rounded prominences only, 

 sparsely hirsute. Front three-lobed, middle lobe largest, edges 

 of lobes entire. Antero-lateral margin of carapace five-toothed. 

 First pair of legs equal, surface nearly smooth, hirsute; two 

 flattened, triangular teeth at anterior superior angles of wrist; 

 hand with two well-marked carinse on the upper sides, the inner 

 terminating in a very minute, obtuse tubercle. Upper edges of 

 second, third, and fourth pair of legs very sparsely hirsute; 



p 



