Excorallana warmingii 167 



Figure 77. Excorallana tricornis tricornis: A, cephalon and pereonite \ 6; B, ventral 

 cephalon; C, pleotelson and uropods. 



REMARKS The subspecies Excorallana tricornis occidentalis Richardson, 1905a, 

 from southern California, differs from the Gulf and Caribbean subspecies in 

 lacking a gap between the margins of the pleotelsonic incision, and in having 

 a relatively wider uropodal exopod which shows a distinctly asymmetrical 

 apical notch. 



Excorallana warmingii (Hansen, 1890) 

 Figure 751, J 



DIAGNOSIS c? 9.7 mm, 9 12.0 mm. Cephalon unornamented. Eyes con- 

 tiguous, occupying most of dorsal surface of head. Posterior margins of 

 pleonites very faintly tuberculate. Frontal lamina, length slightly more than 

 twice basal width, tapering anteriorly to rounded apex. Pleotelson unorna- 

 mented except for two faint submedian tubercles basally; lateral incisions 

 lacking; apex broadly rounded, with five low but distinct marginal teeth. 



