150 



BULLETIN 54, 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). 



Corallanafisxicauda HANSEN, Vidensk. Selsk. Skr. (6), V, 1890, pp. 385-386, pi. 

 vn, figs. 5-5d. RICHARDSON, Proc. U. S. Nat. Mus., XXIII, 1901, p. 519. 



Locality. 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 eyes are black, very large, 

 occupying the entire surface of 

 the head with the exception of 

 a small median area at the pos- 

 terior margin; the ocelli are 

 very large, semispherical, and 

 formed as in E. warmingii. 



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 flat, 

 and rounded anteriorh T . The 

 lamina seen from the side is 

 curved outward and near the 

 apex curved inward. 



The clypeus seen from below 

 is very 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 antennae; the 

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

 seen from above and below; the second article is somewhat shorter 

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

 than the peduncle and is composed of about eight articles. 

 The second pair of antennae 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. EXOCORALLANA FISSICAUDA (AFTER HAN- 

 SEN). a, FEMALE, b, LATERAL VIEW. r. LEG OF 



SEVENTH PAIR. d, APEX OF FIFTH ARTICLE OF 

 SEVENTH LEG, BEARING SET^E. , POSTERIOR PART 

 OF ABDOMEN WITH UROPODA. (ENLARGED.) 



