238 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



the posterior margin of the head. The ba.sal articles of the first pair 

 of antenniv are adjacent on the ventral side. The articles of both 

 pairs of antennse are greatly dilated and flattened. The raaxillipeds 

 have a palp of two articles. The palp of the mandibles is composed 



Fig. 241. — Meinertia gaudichaudii (After Schicedte and Meinert). o. Adult female. 6, Adtlt 

 FEMALE, c, Lateral view of thorax. (Enlarged.) 



of three articles, the terminal one being ver}^ slender and minute. 

 The second maxilhv? terminate in two lobes furnished with small hooks. 

 The first segment of the thorax is longer than any of the others, 

 being H mm. in length; the second and fifth segments are subecpial, 

 each being 4 mm. long; the third and fourth are each .5 mm, in length; 



Fig. 242.— Meinertia gavdichaudii. o, Maxilliped of male. >: 20^. />, Maxilliped of female. 

 X 20^. r. First maxilla, x 39. 



the sixth segment is 8 mm. long; the seventh is 2 mm. long. The 

 antero-lateral angles of the first segment are narrow and acute and 

 are produced forward to about the middle of the head. The epimera 

 are distinctly separated on all the six following segments. The}^ are 

 narrow, elongated plates, not extending quite to the posterior margins 

 pf the segments. 



