368 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



(Lamarck), 4 males were attached to 8 females that were under 

 the abdomen of their shrimp hosts. 



Genus BOPYRO Pearse 



BOPYRO CHOPRAE Pearse 



Bopyro choprae Pearse, Proc. U. S. Nat. Mus., vol. 81, art. 1, p. 1, figs. 1-14, 

 1932. 



From the gill chambers of the same shrimps mentioned under 

 Hemiarthrus schmitti two females and a male were collected. 



Genus LEIDYA Cornalia 



LEIDYA BIMINI, new species 



Figure 77, a-i 



Female. — Body compressed and distorted, longer than broad. 

 Head not deeply set in thorax, rounded in front and behind, with 

 two large lateral, oval discs. First antenna 3-segmented ; the distal 

 segment is narrowest and bears five strong setae. Second antenna 

 5-segmented ; distal segment narrowest and shortest. All thoracic 

 segments distinct; first five with delicate median ventral suckers. 

 Thoracic legs stout; terminating in short claws; four distal seg- 

 ments minutely spinulose. Abdomen segments all separate; pleo- 

 pods slender with digitate margins. 



Measurements: Length 6.7 mm.; width 4.8 mm.; length of 

 head 1.6 mm. ; width 2.0 mm. 



Male. — Body slender, 3.6 times as long as wide; head one-four- 

 teenth of total length ; fourth thoracic segment slightly wider than 

 others ; 13 segments behind the head ; caudal rami 0.22 total length. 

 First four segments of thorax transversely oblong with rounded 

 corners, the remaining segments increasingly wider posteriorly 

 until the fourth and fifth abdominal segments, which have laterally 

 projecting processes. The thoracic and abdominal segments have 

 ventral processes; the first of these is nearly spherical, the next 

 four are elongated with rounded tips, the next four are wider 

 and triangular, and on abdominal segments 2-5 these are armed 

 with cross or concentric ridges. The five abdominal segments have 

 posterolateral thickenings which have definite patterns, as shown 

 in figures 77, c and d. The anal segment is a truncated, rounded 

 pyramid, not sharply separated from the slender caudal rami, 

 which are without spines or setae. The second abdominal segment 

 has irregularly branched pigment cells and the three other anterior 

 abdominal segments show a few small rounded pigment masses. 

 The first antennae are 3-segmented and broad. The second anten- 

 nae are 7-segmented ; segments decreasing from base to tip and 

 bear 0, 1, 2, 2, 7, 0, and 5 setae. 



