73 



somites smooth ; second pair of chelipeds slender, much shorter than first 

 or third. 



Figure four times life size. . ' 

 Distribution. — Great Britain, South coast, Hastings; Weymouth. 

 Ireland, East coast. Skerries, Dublin. 



Species III. 



Smooth-tailed Spinous Shrimp. — Plate YII. 



Cheraphilus Pattersonii (Kin.) 



Crangon Pattersonii. Kinahan, Proceedings Dubl. I^at. Hist. Soc, 

 vol. ii., p. 130. Trans. E. I. A. vol xxiv. p. 71. 



Rostrum (r) short, rounded at apex, narrowed, concave above ; ocular 

 notch narrowed, ciliated on outer border only ; carapace rounded above; 

 median gastric region with a row of three principal teeth, connected by an 

 obsolete carina ; lateral gastric with rows of minute teeth terminathig in 

 one principal tooth ; one tooth on each branchial region : fifth abdominal 

 somite sculptured ; sixth obsoletely bicarinate ; telson (t), sulcate, elongate; 

 second pair chelipeds half length of first or of third, 



Figure four times size of life. 



Distribution : — Great Britain, JS'orth Coast, Shetland, Eev. A. M. 

 IS'orman, q, v. Ireland, I^orth-east coast, Belfast. 



Species IY. 

 Spined Shrimp.— Plate YIII. 

 Cheraphilus spinosus (Leach Sp.). 



Crangon spinosus. Leach, Linn. Trans., xi., p. 346 ; Lam. Hist. J^at. 

 Ms. An. S. Yert. v., p. 202; Bell, Brit. Crast., p. 261 ; A. White, 

 108 ; Thompson, ]N"at. Hist. Ireland, v. iv., p. 392 ; Kin. Trans. 

 E. 1. A. vol. xxiv. p. 73. 



Pontophilus. Leach, MaL Brit., t. xxxvii. A. 



Crangon cataphractus. M. Edwardes, Hist, de Crust., ii., p, 243 (ex- 

 cluding description of female, which refers to ^geon cataphractus 

 of present list, andEisso and Olivi, Cuv. E. A. (Croch.) t. 51, f. 3.) 



JEgeon loricatus, Guerin, Exped. Moree, p. 33. 



Rostrum (r) moderately long, narrow, and pointed, concave at the base; 

 ocular notch narrow, deep, ciliated all round : carapace contracted, rounded 

 above, armed with five longitudinal rows of teeth on the gastric region, and 

 one on each branchial region ; third and fourth abdominal somites cari- 

 nated ; fifth somite sculptured ; sixth obsoletely bicarinate, sulcate; telson 

 sulcate, elongate; second pair of chelipeds half length of first or of third, 



10, First pair of chelipeds ; 9, external foot] aw. 



E. I. A. PEOC.-— VOL, VIII. 



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