Pontophilus trispinbsus. 



261 



Art. V. Descriptions of some Species of Crustaceous Animals; 

 by S. Hailstone, Jun. Esq. : tvith Illustrations and Remarks, 

 by J, O. Westwood, Esq. F.L.S. &c. 



Ord. Macroura, Fam. Palaemonicte, Gen. Pontophilus, Sp. trispinosus 

 Hailstone. (j%. 25.) 



A female : a, The external foot-jaws; b, one of the fringed hairs at the extremity of the penulti- 

 mate joint, highly magnified ; c, extremity of the first pair of legs ; d, extremity of the 

 second pair ; e, extremity of the third pair. All the figures magnified. 



On March 1. 1834, several individuals of a species of Pon- 

 tophilus (^fig. 25.) were brought to me, which had been caught 

 in a shrimping net upon this coast. They had only three 

 spines upon the thorax ; one in the middle, and one on each 

 side of it. Their colour was much like a shrimp's, but paler, 

 less clouded, and with a sprinkling of golden blots. Their 

 length, about an inch. They were called by the man who 

 had caught them " pug-shrimps : " he said that he had never 

 observed them before this last winter. I shall be glad to 

 learn whether this species has been described, and, if it has, 

 in what book. Leach [Malacostraca Podophthalma Britannia, 

 t. 37. A.) has figured only one species (the P. spinosus 

 Leach, the Egeow loricatus JRisso), but not the one in ques- 

 tion. The females were with spawn. — June 3. 1834. 



{July, 1834.] I send a description of two crabs, which I 

 have found upon this coast ; and, if you can inform me whe- 

 ther they are undescribed, I shall be obliged. They are not 

 in Leach's Malacostraca, To this paper may be appended 

 with propriety the communication I made to you of the new 

 Pontophilus, which must, of course, be denominated trispino- 

 sus. — 16. Undercliffe, St, Leonard's, Hastings, July, 1834. 



