sum of remaining four. Third to fifth legs with 

 dactyls bifurcate. 



Sixth abdominal segment with a strong tri- 

 angular tooth on each posterior angle. Telson with 

 sinuous sides tapering to subtruncate tip; dorsal 

 spines strong, first pair at one-third, second at 

 two-thirds length; tip with two pairs of strong 

 spines, inner pair slightly longer. Uropodal 

 exopod broadly oval; lateral border spined with 

 seven or eight denticles, a movable spine at distal 

 end of series. 



Measurements. — Length of body : ovigerous fe- 

 males, 16 to 22 mm. 



Variations. — Length of the carpus of the small 

 claw varies with age. The rostrum and projections 

 on the orbital hoods may be entirely lacking or 

 their relative lengths may vary (Wass, 1955). 



Color. — Translucent white; ringers brown. 



Habitat. — Lives at depths of 15 to 28 fathoms 

 in interior of sponges; especially abundant in 

 Spheciospongia {= Spirastrella) (Wells, Wells, 

 and Gray, 1960) . Sometimes found in sponges cast 

 on beach during storms at Beaufort, N.C. 



Type locality. — Specimens upon which Her- 

 rick's description is based were taken in the 

 Bahamas, probably at Nassau, New Providence 

 Island. 



Known range. — Beaufort, N.C, to Yucatan, 

 Mexico; through West Indies to Curasao. 



Remarks. — This species is common in the Caro- 

 linas and often occurs in enormous numbers in the 

 canals of large sponges. Infestation by parasitic 

 is.opods is common, Phryxus subcaudalis Hay oc- 

 curring on the surface of the abdomen and Syn- 

 synella deformans Hay in the branchial chambers. 



Ovigerous females have been taken off North 

 Carolina in August and December. The species 

 hatches in essentially the adult form (Herrick, 

 1892). Coutiere (1909) and Wass (1955) re- 

 marked on the fact that few ovigerous females 

 occur among crowded populations in sponges. 



Family Ogyrididae 



Caridea with first two pairs of legs chelate, 

 nearly equal in size and not much if any larger 

 than other legs. Carpus of second legs subdivided. 

 Rostrum small or wanting. Eyestalks long, 

 slender, fully exposed but with corneal surface 

 reduced. Telson thick, obtusely pointed. Blades 



of uropods curved outward. Thelycum present 

 in females (Hay and Shore, 1918). 



Genus Ogyrides Stebbing, 1914 



Stebbing, 1914, p. 31 ; Hemming, 1958b, p. 158. 



KEY TO SPECIES IN THE CAROLINAS 



a. Postrostral crest with 8 to 14 small, fixed spines 



limicola (p. 74). 



aa. A single movable spine behind rostrum on middorsal 



line alphaerostris (p. 75). 



Ogyrides limicola Williams 



Figure 60 

 Ogyrides limicola Williams, 1955c, p. 57, fig. 1. 



Recognition characters. — Rostrum short, de- 

 pressed, equilaterally triangular. Postrostral 

 carina with 8 to 14 teeth, flanked on each side by 

 row of setae extending to tip of rostrum. 

 Pterygostomian area broadly obtuse. Eyestalks 

 long, lightly setiferous dorsally and dorso- 

 medially, narrowest in middle, exceeding anten- 

 nular peduncles by approximately 2.5 times 

 corneal length. Antennal and antennular pedun- 

 cles nearly equal in length; second antennular 

 article 3 times as long as third article ; stylocerite 

 of basal article terminating in two strong acumi- 

 nate spines of nearly equal length. Antennal scale 

 and second article of antennular peduncle reach- 

 ing nearly same level distally; scale evenly 



Figube 60. — Ogyrides Umicola Williams. A, carapace and 

 anterior appendages in lateral view ; B, anterior ap- 

 |)endages and i>orti<>n of carapace in dorsal view; C. 

 telson and uroj>ods of right side in dorsal view ; A-C 

 approximately X 10 (after Williams, 1955c). 



74 



FISH AND WILDLIFE SERVICE 



