602 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



margin broadly, evenly rounded, and the anterolateral angles 

 rounded, the eyes being so situated on a ridge as to produce the ap- 

 pearance of a small lobe in front of each eye. The eyes are small, 

 compound, lateral. The first pair of antennae are inconspicuous, 

 rudimentary, consisting of one small joint, tipped with a few bristles. 

 The first, second, and third articles of the second antennae are short, 

 stout, subequal; the fourth article is twice as long as the third; the 

 fifth is slightly greater than the fourth; the flagellum is bi articulate; 

 the second pair of antennae extends to the anterior margin of the 

 third thoracic segment. The maxilliped has a palp of three articles. 

 The first maxilla has the inner plate furnished with several small 

 spines; the outer plate is quadridentate. 



Thorax : The first segment is the longest, about as long as the head, 

 with the anterolateral margins decidedly curved and extending 

 around the head to the posterior margin of the eye; the second to 

 seventh segments are subequal; the epimera are completely fused 

 with the segments. The lateral margins of the first three segments 

 are straight, the postlateral angles of the fourth, fifth, sixth, and 

 seventh segments are gradually, acutely produced, that of the seventh 

 entirely concealing the sides of the first and second abdominal seg- 

 ments; also the anterior margin of the third segment. The legs are 

 all ambulatory, similar and subequal. 



Abdomen: This is decidedly narrower than the thorax; the first 

 and second segments are strongly compressed and partly concealed 

 by the seventh thoracic segment ; the third, fourth, and fifth segments 

 are subequal, each about equal to the first and second segments taken 

 together, and having the postlateral angle gradually acutely pro- 

 duced ; the sixth segment is small, triangular, with the apex bluntly 

 pointed. The peduncle of the uropoda extends to the extremity of 

 the abdomen ; the inner branch is very slender, pointed, and extends 

 about 1 millimeter beyond the abdomen; the outer branch is about 

 1 mm. long and 0.2 mm. wide, and is bluntly pointed at the end. 



Color : yellowish with irregular fuscous patches and with a longi- 

 tudinal light area or band in the middle of the dorsal surface. 



This species is nearest to Philoscia culebrae Moore,^ but differs in 

 the following : ( 1 ) The biarticulate flagellum of the second antennae ; 

 (2) the head is more rectangular, and the lobed aspect of its frontal 

 margin is less decided; (3) the appendages are less setiferous; (4) 

 the abdomen, as a whole, is wider and shorter, its lateral line being 

 approximately continuous with that of the thorax. 



The holotype and six additional specimens (Cat. No. 50403, U. S. 

 N. M.), secured "on bat guano" in Hunt's Cave, New Providence, 

 Bahamas, June 29, 1914, were presented to the United States National 

 Museum by Mr. George P. Englehardt. 



^Philoscia culebrae Moore, Bull. U. S. Fish Commission, vol. 20, pt. 2, 1902, p. 17G, 

 pi. 11. flgs. 13-17. 



