162 



138 1. Scina crassicornis (Fabricius, 1775) (Fig. 59) 



Fabricus, 1775: 481 (Astacus); Herbsf, 1793: 134 (Cancer); Stab- 

 bing, 1904: 24; Tattersall, 1906: 7; Stephensen, 1918: 19, 1923: 9; 

 Chevreux, 1919: 10; Wagler, 1926: 325, 1927: 90; Shoemaker, 1945a: 

 228; Vinogradov, 1960a: 221. — Shoemaker, 1945a: 228 {bermudensis 

 var.).— cornigeraMilne-edwards, 1830: 387 (Hyperia); 1840: 80 (Tyro); 

 Stebbing, 1888:1273, 1895: 351; Chevreux, 1900: 121.— ^rad/w Dana, 

 1853: 834 (Clydonia). —atlaniica Bovallius, 1885b: 14 (Tyro).—sarsi, 

 atlantica, longipes Bovallius, 1887b: 9, 13, 15 (Tyro). 



Largest and one of the most abundant species of the genus Scina.The 

 size of sexually mature specimens varies from 12 to 29 mm in females. 



The pereon is broadly oval. The pleon and urosomite I have one low 

 dorsal and two lateral keels. 



The head has a highly protruding mouth cone. Antennae I surpass 

 the pereon in length but are shorter than the pereon and pleon together. 



Fig. 59. Scina crassicornis (Fabricius) (after Wagler, 1926). 

 (The author does not mention the sex of the illustrated specimen; this is true of several of 



his other illustrations). 



Not listed in Lit. Cited — ^Ed. 



