Remarks. — The young of this species and Per- 

 sephona punctata aquilonaris have a close resem- 

 blance. 



Family Calappidae 



Oxystomata of normal crablike form with ab- 

 domen hidden beneath thorax. Antennae small. 

 Afferent openings of gill chambers in front of 

 chelipeds. Outer maxillipeds not completely clos- 

 ing buccal cavity. Male openings coxal on fifth 

 pair of legs. 



Calappid species are known from the Cretace- 

 ous to the present in North America (Rathbun, 

 1935). 



KEY TO GENERA AND ONE SPECIES IN THE 

 CAROLINAS 



a. Posterolateral region of carapace expanded and dentate 



Calappa (p. 152). 

 aa. Posterolateral region of carapace not expanded, 

 b. Merits bispinous on distal outer surface with lower 

 spine strong and greatly extended laterally 



Acanthocarpus alexaMri (p. 156). 

 bb. Merus not bispinous or distal outer surface, 

 c. Carapace considerably broader than long, regu- 

 larly convex above Hepatus (p. 157). 



ce. Carapace nearly as long as broad, dorsal surface 

 uneven Osachila (p. 159). 



Subfamily Calappinae 



Merus of external maxillipeds almost never 

 elongate and acute, never concealing palp in re- 

 pose. Legs adapted for walking (Alcock in 

 Rathbun, 1937). 



Genus Calappa Weber, 1795 



Rathbun, 1937, p. 197. 



KEY TO SPECIES IN THE CAROLINAS 



a. Carapace widest behind middle; proximal tooth on 

 lower edge of hand with margin pointed or angled, 

 b. Carapace smoothly granulate. 



c. Carapace often with a horizontal tooth or spine at 

 either end of posterior margin ; smooth area on 

 lower half of palm on cheliped narrow proximally, 

 widening and continued obliquely upward distally 



sulcata i v. 155). 



cc. Carapace without a horizontal tooth or spine at 



either end of posterior margin ; smooth area on 



lower half of palm on cheliped concave, not directed 



Obliquely upward distally. 



d. Male with basal width of fifth abdominal seg- 

 ment twice median length; female with a few 

 granulations near lateral border of fourth ab- 

 dominal segment flammea i p. 152). 



dd. Male with basal width of fifth abdominal seg- 

 ment less than twice median length ; female with 

 no granulations near lateral border of fourth 



abdominal segment ocellata (p. 153). 



bb. Carapace covered with rough protuberances, and 



granulate angusta (p. 154). 



aa. Carapace widest in front of middle ; proximal tooth 

 on lower edge of hand with margin not pointed or 

 angled angusta (young) (p. 154). 



Calappa flammea (Herbst) 



Figures 130-131 



Cancer flammeus Herbst, 1794, p. 161, pi. 40, fig. 2. 

 Calappa flammea: Hay and Shore, 1918, p. 421, pi. 31. fig. 8. — 

 Holthuis, 1958, p. 148, figs. 28-35 (rev.). 



Figure 130. — Calappa flammea (Herbst). Female from 

 Tortugas, Florida, in dorsal view, approximately X 

 0.66 (after Holthuis, 1958) . 



Figure 131. — Calappa flammea (Herbst). A, male first 

 pleopod in ventral view, X 3 ; B, male second pleopod 

 in dorsal (anterior) view, X 3; C, abdomen of male, 

 approximately X 0.8; D, abdomen of female, approxi- 

 mately X 0.8; A-C from Tortugas, D from Bahama Is- 

 lands (after Holthuis, 1958). 



152 



FISH AND WILDLIFE SERVICE 



