340 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 38. 



arched dorsally, and somewhal larger, otherwise much as the male; 

 natatory setae of the second antennae plumose, reaching almost to 

 tips of terminal claws; the three spines of the firsl maxillary process 

 (fig. 5d) strong, the middle one toothed: the two setae on the second 

 segment of the first leg almost equal in length (fig. 5e); terminal 

 claw strong, aboul three-fourths as long as the last four segments 

 taken together and coarsely toothed on its distal half; second foot 

 terminating in the usual beak-shaped segment (fig. 5/); palps of the 

 second maxillae of the male as in fig. %/, h\ penis as in fig. hi\ furca 

 (fig. :»/') about twenty-two times as long as wide, decidedly bent at 

 about the middle, plainly toothed its distal dorsal half , more faintly 

 the res! of the way, the spines of the distal half showing a tendency 

 to be arranged comb-like, as shown in the figure; terminal claw 

 nearly straight, about one-half the length of the furca, and toothed 

 in its distal half; subterminal claw less than one-half the length of 

 the terminal claw, and plainly toothed its distal half ; terminal seta 

 about same length as the dorsal seta, which is about six-elevenths 

 the length of the subterminal claw. 



This new species is described from two specimens, two males and 

 two females, ••taken from a small pond on Government Hill, Bar- 

 bados, May 1; they are common in pools of water, more or less 

 permanent, and reappear in ponds that have been dry for weeks at 

 a time, ;i-> -,„.ii as the rain tills them up again." Sent to the U. S. 

 National Museum by the Imperial Department of Agriculture for the 

 AVc^t Indies (II. A. Ballon, collector, May 1, 1000). 



Type-specimen. Cat. No. 40524, U.S.N.M. 



Remarks. Since males were found in this collection, a circumstance 

 not heretofore recorded to my knowledge, the generic description i- 

 hereby revised in that pari icular. 



But few species of t his genus have ever I n described. The follow- 

 ing are all that are known to the author in addition to tin 1 above: 



( '. azleka Saussure, Texas. 



( . Cypris) braziliensis (Dana), Brazil. 



( . {Cypris) herricki (Turner), Ohio. 



C. {Pachycypris) incisa (Claus), Argentina. 



( . {Pachycypris) leuckarti (Clans), Argentina and Venezuela. 



' '. m, ricana Sharpe, Mexico. 



' Herpetocypris) obliqua (Dadaj i, Patagonia. 



' Cypris) speciosa (Dana), Rio de Janeiro. (Collected by Charles 

 I >.mw in. 



- subglobosa (Sowerb} . Ceylon. 



' symmetrica Vavra, Falkland Islands and Straits of Magellan 



ion. 



