NO. 1350. NATURAL ITTSTORY OF THE ISOPODA—RICHARDSOX. 



71 



Fig. .'is.— I'llOBO- 

 PYRU.SFUiKIDEN- 

 SlS, FIRST LA- 

 MELLA OF MAR- 

 SfPIUM. X 10. 



Fig. 54.— Probopy- 

 rvs floridensis, 

 leg of sixth pair 

 of adult female. 



X39. 



.segiiUMit.s; the epimoi'ii are })reseiit as narrow ])lates latcial to the 

 ovarian Ijo.sscs. On the hist tlircc segments the cpi- 

 mera occupy the whole of the hitcn'al marj;in. 



Tlie seo-nients of the a])doinen are di.stinctly sepa- 

 rated on the dor.sal side. The hiteral maroins are nar- 

 rowl}^ rounded. The terminal segment of the lK)dy is 

 lono- and narrow, reaching beyond the lateral margins 

 of the tifth segment, is rounded posteriori}-, and with 

 or without a minute excavation. 



The pleopoda consist of live pairs of double-branched 

 lamellar appendages. 



The incubatory lamellje are large, encircling the incubatory pouch, 

 leaving onl}^ a small opening into the interior. The first pair of 

 plates have the terminal lobe of the di.stal .segment 

 straight. 



All the legs have a well rounded expansion or carina 

 about the middle of the basis, 



Male with all the segments of the thorax well 

 defined and widely separated at the sides. Body nar- 

 row, elongate, nearly three times as long as wide. 



The abdomen has all the segments well defined at 

 the sides, but fused in the middle of the dorsal surface. 

 Length almost equal to the breadth. Terminal segment well defined, 

 rounded posteriorly, and extending beyond the lobes of the preceding 

 segment. The lateral margins of all the segments are rounded. 

 Pleopoda are present in the form of pairs of small 

 rounded processes, a pair on each segment of the abdo- 

 men. Ej'es present. 



One specimen was collected by Mr. W. C. Ken- 

 dall at Satsuina Island, above St. Johns liiver, 

 Florida; parasitic on Palaemonetes exilijpes Stimpson. 

 Two other specimens were obtained by the U. S. 

 Fish Commission steamer Alhatro^a at Little River, 

 Miami, Florida, parasitic also on Palcexwnetes exilipes 

 Stimpson. 



Tf/pc— Cat No. 29090, U.S.N.M. 



BOPYRINA ABBREVIATA, new species. 



Bod}' of adult female very asynnnctrical, the one 

 side being very much longer than tlu; other. Color fig. rw.— probopy 

 entirely white with a few l)lack dots scattered irregu- 

 larl}' over the dorsal surface. 



Head large, turned to the shorter side; frontal boarder produced in 

 a rounded lobe in the middle, Antero-lateral angles ])roduccd in 

 narrow lobes or processes. Eyes small, distinct. 



Rrs FI.OKIDEXSIS, 

 .MALE. >; -Jl. 



