1958b) now lists Oromgon Fabricius, 1798, as the 

 correct generic name for the species here con- 

 sidered, and the Official Index of Eejected and 

 Invalid Generic Names in Zoology (Hemming, 

 1958a) lists the suppressed generic name Crangon 

 Weber, 1795, and the invalid name Crago La- 

 marck, 1801, formerly applied to the species here 

 considered. 



Crangon septemspinosa Say 



Figure 72 



Crangon septemspinosa Say, 181S, p. 246. 



Craqo septemspinosa: Hay and Shore, 1918, p. 396, pi. 27, 

 fig. 9. — Rathbun, 1929, p. 20. 



Recognition characters. — Rostrum shorter than 

 eyestalks, unarmed, tip obtuse. Carapace some- 

 what depressed, subcylindrical ; dorsal surface 

 with a small appressed spine back of rostrum; 

 anterior margin with suborbital spine obtuse; 

 antennal spine strongly produced, equaling or 

 slightly exceeding eyes and with a minute spine 

 below; hepatic spine well developed; anterior 

 portion of carapace with two impressed lines, one 

 originating in fissure in superior margin of orbit, 

 another originating lateral to suborbital spine, 

 both uniting above hepatic spine and disappearing 

 posteriorly; a broad groove below and anterior 

 to hepatic spine. Eyes moderately developed. 

 Antennular peduncle with basal article hollowed 

 out above, stylocerite broad, cupped longitudinally 

 forming portion of socket for reception of eye, tip 

 reaching nearly to end of article ; second article of 

 peduncle slightly shorter than third; inner 

 flagellum hairy below, a little longer than antennal 

 scale; outer flagellum shorter, smooth. Antennal 

 scale broadest in posterior half, lamella tapering 



to narrow rounded tip; lateral border slightly 

 convex; well -developed lateral spine exceeding 

 lamella and as long as distal width of blade. 

 Third maxilliped reaching nearly to tip of an- 

 tennule; hairy. 



First pair of legs strong, subchelate; hand less 

 than 3.5 times as long as wide, palm with a strong 

 spine at distal end of finger; merus with a small 

 spine on lower margin. Second pair of legs almost 

 filiform ; minutely chelate, hand hairy. Third legs 

 stronger; fourth and fifth normal. 



Abdomen, viewed dorsally, tapering from broad 

 first and second segments to narrow sixth seg- 

 ment. Telson slender, tapering; with four small 

 spines above on lateral border, first pair at two- 

 thirds length, second midway between these and 

 acute tip; tip flanked by three pairs of movable 

 spines, median pair longest and stoutest. Uropodal 

 exopods with lateral border ending in a spine 

 flanked medially by a longer movable spine. 



Measurements. — Length of body: ovigerous fe- 

 males from North Carolina, 25 to 60 mm. Speci- 

 mens from Delaware : males, to 47 mm. ; females, 

 to 70 mm. (Price, 1962). 



Color. — Ash-gray with numerous irregular, 

 stellate, blackish-brown spots or speckled with 

 gray, imitating the color of sand; color subject to 

 considerable variation in shade, tail often darker 

 (various authors). 



Habitat. — Usually near bottom over sand : low- 

 water mark to 50 fathoms, rarely to 246 fathoms. 



Type locality. — "Bay shores and inlets of the 

 sea" [east coast of United States] . 



Known range. — Baffin Bay to east Florida; 

 Arctic Alaska southward to Shumagin Islands, 

 Alaska, and Ranshima, Hokkaido, Japan. 



Figure 72. — Crangon septemspinosa Say. Ovigerous female in dorsal view, legs of left side not shown, 10 mm. 



indicated. 



MARINE DECAPOD CRUSTACEANS OF THE CAROLINAS 



89 



