150 



BULLETIN r)4, UNITED STATES NATIONAL MUSEUM. 



little beyond the incision in the lateral margin of the terminal abdomi- 

 nal segment. 



The first three pairs of legs are prehensile, the last four pairs 

 ambulatory. 



EXOCORALLANA FISSICAUDA (Hansen). 



Cor allana fisM Cauda Hansen, Vidensk. Selsk. 8kr. (6), V, LS90, pp. .S85-886, pi. 

 VII, figs. 5-5(1.— RiCHAHDsoN, Proc. U. S. iS^at. :\Ius., XXIII, 1901, p. 519. 



Local ity. — West Indies. 



The body is almost three times longer than wide; the thorax is 

 somewhat longer than the abdomen. 



The front of the head has the margin straight, the median process 



is bent, having almost disap- 

 ^ b peared. 



The ej^es are black, veiy large, 

 occupying the entire surface of 

 the head with the exception of 

 a small median area at the pos- 

 terior margin; the ocelli are 

 ver}' large, semispherical, and 

 formed as in E. warmingil. 



The frontal lamina is almost 

 three times longer than wide, 

 becoming narrower from the 

 base to the middle, excavated 

 through the greater part of its 

 length, with the apical part tiat, 

 and rounded anteriorh\ The 

 lamina seen from the side is 

 curved outward and near the 

 apex curved inward. 



The clypeus seen from below 

 is ver}' manifest for the most 

 part; the labrum is concealed. 



The first pair of antennae ex- 

 tend to about the apex of the 

 penultimate article of the peduncle of the second pair of antennge; the 

 peduncle has the first article somewhat stout, narrow, however, when 

 seen from above and below; the second article i'^ somewhat shoi'ter 

 than the first and more slender; the fiagellum is somewhat shorter 

 than the peduncle and is composed of about eight articles. 

 The second pair of antenna^ are of the usual structure. 

 The mandibles are large, robust; the distal part of the left mandi- 

 ble is very conspicuous, forming a single cone. 



Fig. 133. — ExociiRAi.LANA fissicatda (After Han- 

 sen), a, Female, h, Lateral view, c, Leg of 



SEVENTH PAIR. (I, APEX OF FIFTH ARTICLE OF 

 SEVENTH LEG, BEARING SET.E. (', POSTERIOR PART 

 OF ABDOMEN WITH UROPODA. (ENLARGED.) 



