ISOPODS OF NORTH AMERICA. 563 



distinct; the last three are fused in the terminal piece, which is tri- 

 lobate, a lateral lobe on either side and a larger median posterior lobe. 



There are no uropoda. This species is named for Dr. W. T. Caiman, 

 the Scotch naturalist. 



Only one specimen was collected by the U. S. Bureau of Fisheries 

 steamer Albatross at Station 4421, between Santa Barbara and San 

 Nicolas, California. 



The type is in the U. S. Nat. Museum. Cat. No. 320T3. 



96. Genus BOPYRINA Kossmann. 



Branchial parasites. 



Female with segments of abdomen fused in the middle, more or less 

 defined at the sides; lateral parts or pleural lamellae not developed. 



Pleopoda rudimentary; first four pairs single-branched, simple, last 

 pair wanting. Uropoda wanting. 



Male with all the segments of the thorax distinct. Segments of the 

 abdomen fused in the middle, but more or less defined at the sides. 



ANALYTICAL KEY TO THE SPECIES OF THE GENUS BOPYRINA. 



a. Segments of the abdomen in female denned only on one side of the body. 



Bopyrina abbreviata Richardson 

 a / . Segments of the abdomen in female distinctly denned on both sides of the 



abdomen. 

 b. First incubatory lamellae with the distal segment produced in a linguiform lobe 



at the outer posterior extremity Bopyrina urocaridis Richardson 



6'. First incubatory lamelhe with the distal segment roundly produced at the 

 inner posterior extremity Bopyrina thorii Richardson 



BOPYRINA ABBREVIATA Richardson. 



Bopyrina abbrenata RICHARDSON, Proc. U. S. Nat. Mus., XXVII, 1904, pp. 71-73. 



Locality. Puntarasa, Florida, on Hippolyte 

 zostericola (Smith). 



Body of adult female very asymmetrical, one 

 side being veiy much longer than the other. 

 Color entirely white with a few black dots scat- 

 tered irregularly over the dorsal surface. 



Head large, turned to the shorter side; frontal 

 border produced in a rounded lobe in the middle. 

 Antero-lateral angles produced in narrow lobes 

 or processes. Eyes small, distinct. 



The segments of the thorax are distinctly de- 

 fined. The epimera on the longer side of the body FIG . 620. BOPYKINA AB- 

 are distinct on the first three segments, where BREVIATA. DORSALVIEW 



, , . . ' , ' - OF FEMALE. X 23. 



they occupy the anterior portion of the lateral 



margin, but it is impossible to distinguish them on the shorter side. 



Ovarian bosses are not present on any of the segments. The epimera 



