NO. 1350. NATURAL HISTORY OF THE TSOPODA— RICHARDSON. 



81 



Eyes present. A))d()nuMi occupies one-fourth of the entire length of 

 the ])()d3^ 



Only one specimen was Found at Key West by Henry Hemphill, 

 Parasitic on JW/'o/i.sfhcs' .scKsjf/itosn.s (Gibbes). 



Ti/p<'.— Cat No. 29094:, U.S.N.M. 



MUNIDION PARVA, new species. 



Head large, broader anteriorly than posteriorly, 

 with wide frontal border. Eyes wanting. Anterior 

 margin nearly straight, posterior margin narrowly 

 rounded. 



The segments of the thorax are distinct, the first 

 two of which arc short in the dorsal median line. 

 The other five segments are a))0ut equal in length. 

 Ovarian bosses present on all the segments and 

 occupying the posterior portion of the sublateral 

 part of the segment. On all the segments they are 

 in the form of petiolated processes. The epimera 

 are large plates w^hich occupy the whole of the fig. 75.— pseudione 

 lateral margin of the segments. These plates are ^^^tata.male. x23. 

 larger on the posterior segments than on the anterior ones. 



The al)dominal segments are all distinct. The first five are pro- 

 duced laterally in epimeral lobes, elongated and leaf -shaped, decreas- 

 ing in size gradually from the first to the fifth segments. These lobes 



do not cover the dorsal surface 

 of the abdomen, or obscure the 

 small terminal segment, which 

 is visil)le dorsally as a small 

 rounded petiolated process. 



The pleopoda are five pairs 

 of double-branched elongated 

 leaf-like appendages; the inner 

 branches are smaller than the 

 outer. The uropoda consist of 

 a pair of biramous appendages, 

 each with one large outer and 

 one small inner branch, similar 

 in shape to the branches of the pleopoda. 



The ventral side of the abdominal segments is keeled on the poste- 

 rior margin. The pl(>opoda and abdominal epimera are somewhat 

 carinatinl on l)()th surfaces. 



The marsupium is l)oundod by five pairs of incubator}- lamella", the 



third pair of which do not ovcrlaj) in the median ventral line, so that 



a small ()])ening is left into the incubatory pouch. The terminal lobe 



of the distal segment of the first pair is ver}' small, but well defined. 



The seven pairs of legs are all similar; the basis is furnished with 



Froc. N. M. vol. xxvii— 03 6 



76 — MUNIDION PARVA. n, DORSAL VIEW OF KE- 

 MALE; b, VENTRAL VIEW OF SAME. X 8. 



