90 J. R. KiNAHAN on the Britannic Species of 



Galathea Squamifera. Leach, IMal. Pod. Brit., t. xxviii., A, excluding 

 Fig. 2. 



Cancer astacus squamifer. Montagu. 



Gnl. squamifera. Leach, Edinburgh Encyclopedia, vii., p. 393 ; Dictionnaire 

 des Sciences Naturelles, xviii., p. 51 ; M. Edwardes, Histoire Naturelles 

 des Crustaces, ii., p. 275 ; Conch. Cornish Fauna, p. 77 ; Thompson, Na- 

 tural History of Ireland, vol. iv., p. 385 ; Bell, British Crustacea, p 197; 

 AVhite, Popular History British Crustacea, p. 87 ; Kinahan, Proceedings 

 Natural History, Dublin, vol. ii., pp. 68, &c. ; Report British Association, 

 1859; Proceedings Dublin University and Zoological Association, vol. i., 

 p. 270; Zoologist, 3rd Series, 5775. 



(?) Gal. Glabra. Risso, Crust, de Nice, 72 ; H. N. de I'Eur. Mer., v. 47. 



Rostrum: short, covered icith squamiform tubercles above, tubercles ciliated 

 along margins ; deephj depressed in median line., terininating in a cylindrical pointed 

 tooth ; four pointed teeth on lateral margins on each side, the posterior one much 

 smaller than the others ; first pair chelipeds broad, flattened, covered icith squami- 

 form dentated tubercles ; dactylos moderate, not twisted ; sides ofpropodos curved, 

 outer margin toothed, two succeeding joints strongly toothed on outer edge; ischium 

 {third joint) of external maxillipeds shorter than meros (fourth joint). 



The general form of this species is elongate, the breadth being to the length 

 as 3 : 8. The carapace is one-fourth longer than broad, and much narrower 

 in front than behind. The abdomen much narrower than the carapace. 



The carapace is rounded, perfectly free from teeth above, except two small 

 spiniform ones behind the orbits ; the surface marked out by transverse ciliated 

 raised lines in two series bounding the regions, a principal dilated laterally 

 into teeth in front, but untoothed behind; and a secondary, which is generally 

 smooth. The gastric region has two or more small teeth on the median por- 

 tion of its anterior boundary. The frontal region and rostrum (Fig. r) are 

 covered with squamiform tubercles. 



The rostrum deeply concave above, terminating in a strong cylindrical 

 sharp tooth, its surface covered with squamiform tubercles, which are rounded 

 in outline, and ciliated at their margins with thick-set short hairs ; these are 

 present, and easily distinguishable, even in specimens barely a quarter of an inch 



