BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



pair of antennae are composed of ten articles, and extend to the middle 

 of the first thoracic segment. The maxillipeds have a palp of two 

 articles. The palp of the mandibles is composed of three articles. 



The first segment of the thorax is a little longer than any of the 

 three following segments; the last three segments are longer than any 



FIG. 224. NEROCILA CALIFORNICA (AFTER SCHICEDTE AND MEINERT). O, LATERAL VIEW. 6, ADULT 

 FEMALE. C, YOUNG FEMALE, d, LATEBAL VIEW. (ENLARGED.) 



of the three preceding segments and are about equal in length to the 

 first segment. The thorax is broadest at the sixth segment. The post- 

 lateral angles of only the last two segments are produced, those of the 

 sixth segment being very little produced, and those of the seventh seg- 

 ment not much produced. The epimera of all the segments, with the 

 exception of the first, are distinctly separated from the segments. The 



FIG. 225. NEROCILA CALIFORNICA. a, MAXILLIPED. x 27J. 6, FIRST MAXILLA, x 27J. c, MANDI- 

 BLE, x 5l|. d, SEVENTH LEG. x 9J. 



first three have the posterior extremities rounded; the extremities of 

 the last three are more acutely pointed. The epimera do not extend 

 beyond the posterior margins of the segments (and they extend to the 

 posterior margin) except in the last segment, where they almost reach 

 the extremity of the post-lateral angles. 



