less spinous than S. f. coelata (Rathbun, 1925, 

 p. 449). 



Ovigerous females are known in Florida from 

 March to August (U.S. National Museum rec- 

 ords). 



Stenocionops spinimana (Rathbun) 



Figures 242, 2451 



Lioinia spinimana Rathbun, 1*92, p. 240, pi. 30. 

 Stenocionops spinosissima: Hay and Shore, 1918, p. 460, pi. 

 39, fig. 2. 



Stenocionops spinimana: Rathbun, 1925, p. 457, pi. 267 (rev.). 



Recognition characters. — Carapace subpyri- 

 form, convex, covered with sparse growth of 

 short, fine, curled hairs; 8 to 13 median dorsal 

 spines, and numerous other spines on gastric and 

 branchial regions; anterior marginal hepatic 

 spines 3, anterior-most spine small and occasion- 

 ally absent in old individuals. Rostral horns 

 widely divergent, straight, tapering gradually to 

 slender tip. Orbits tubular, not strongly project- 

 ing, eyes small, retractile within orbits; preorbital 

 spine acute, curving forward slightly at tip; post- 

 orbital spine similar in size to spine near antero- 

 lateral angle of basal article of antenna. 



Merus and carpus of chelipeds with numerous 

 spines, hand rough throughout length with two 

 rows of spines above, one below, spines becoming 

 progressively smaller distally. "Walking legs with 

 a few spines. Meral articles with a terminal spine 

 above, and on first leg a longitudinal inner-upper 

 row of five or six, and a ring of about four spines 

 near distal end; on second leg a ring of three or 

 four; on third and fourth only one or two spines 

 besides terminal one. Carpus of first leg with 

 three or four spines, second with three spinules or 

 tubercles, third and fourth with one. 



Abdomen in male and female with seven seg- 

 ments, six free in females. 



Variatwns. — This species exhibits great change 

 in shape and spination with increasing age, as has 



Figure 242. — Stenocionops spinimana (Rathbun). Holotypic male in dorsal view (after Rathbun, 1892). 

 262 FISH AND WILDLIFE SERVICE 



