Figueb 221. — Metoporhaplus calcarata (Say).- Animal in 

 dorsal view, legs of left side not shown, 10 mm. indi- 

 cated. 



ing beyond cornea. Basal antennal article with 

 spine below at midpoint of length, another at 

 outer distal angle, and a spinule at end of next 

 two articles. 



Chelipeds of moderate length, twisted, stout in 

 male and less than half as long as first walking 

 legs, margin of lower (really inner) surface 

 armed with sharp spines; merus with sharp ter- 

 minal spine ; carpus with two sharp dorsal spines, 

 one near each extremity of upper surface; hand 

 broad, inflated; fingers about as long as palm, 

 bent medially. Female with chelipeds feebler, 

 palm shorter, fingers longer and more gaping. 

 "Walking legs slender, articles cylindrical but 

 somewhat crooked; meri with one conspicuous 

 spine and two smaller spines at extremity; 

 dactyls longer than propodi, fringed with hair. 



Male with six, female with five, free abdominal 

 segments. 



Measurements. — Carapace: female, length (in- 

 cluding rostrum), 21 mm., width, 10 mm. Length 

 of rostrum, 11 mm. 



Color. — Dirty gray to lemon yellow. 



Habitat. — Often found among hydroids near 

 Morehead City, N.C., and also taken in dredges 

 in Bogue Sound nearby; shallow water to 49 

 fathoms. 



Type locality. — Bay of Charleston, S.C. 



Known range. — Off Cape Hatteras, N.C., to 

 Rio de Janeiro, Brazil. 



Remarks. — Ovigerous females have been taken 

 off South Carolina in August, and in Florida in 

 March and August (Wass, 1955). Wass also noted 



that this species can remain suspended in water 

 by "rhythmic waving of its long, setae-lined legs." 



Genus Stenorynchus Lamarck, 1818 



Rathbun, 1925, p. 13. 

 Stenorynchus seticornis (Herbst) . Arrow crab 



Figures 222, 223K 



Cancer seticornis Herbst, 1788, p. 229, pi. 16, fig. 91 (see Rath- 

 bun, 1925). 



Stenorynchus Sagittarius: Hay and Shore, 1918, p. 455, pi. 37, 

 fig. 8. 



Stenorynchus seticornis: Rathbun, 1925, p. 13, text-flg. 3, 

 pis. 2-3 (rev.).— Monod, 1956, p. 567, figs. 838-839. 



Recognition characters. — Carapace smooth, tri- 

 angular, longer than broad, diminishing in width 

 to level of eyes and thence produced into a 

 slender, horizontal, flattened, laterally spinulifer- 

 ous rostrum varying from slightly longer to 2.5 

 times as long as carapace; rostral tip acuminate. 

 Orbits not defined; post orbital spine small, oc- 

 casionally bifid. Eyes short, not retractile. Basal 

 article of antenna slender, with strong spine at 

 middle directed downward and forward. 



Legs extremely long and slender, composed of 

 cylindrical articles, finely spinulose and bearing 

 in addition two rows of spines on merus, two or 

 three spines on carpus, and several terminal spines 

 on these articles. Chelipeds slender, cylindrical; 

 hand weak; palm of male cheliped from 2.5 to 



Figure 222. — Stenorynchus seticornis (Herbst). Animal 

 in dorsal view, legs of left side not shown, 30 mm. 

 indicated. 



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