Known range. — Bass River, Nova Scotia, to 

 South Carolina; Franklin County, Fla. 



Remarks.— Both de Man (1928) and Schmitt 

 (1935b) pointed out that Rathbun renamed this 

 species because the name stimpsoni was preoccu- 

 pied by a fossil species of Gallianassa named by 

 Gabb in 1864. Gallianassa atlantica itself has a fos- 

 sil record extending from a first appearance in the 

 upper Miocene of North Carolina and Virginia, 

 and a later occurrence in the Pleistocene of Mary- 

 land to the present (Rathbun, 1935). 



Ovigerous females have been taken in Massa- 

 chusetts and South Carolina in July. Juveniles 

 4 mm. long have been collected on the surface in 

 September in Massachusetts (de Man, 1928). This 

 form is rarely taken in the Carolinas but has been 

 collected in areas ranging from salty estuaries to 

 offshore fishing banks. 



Genus Upogebia [Leach, 1814] 



Leach, [1814J, p. 400.— Hemming, 1958b, p. 143. 



Upogebia affinis (Say) 



Figure 80 



Gebia affinis Say, 1818, p. 241. 



Upogebia affinis: Hay and Shore, 1918, p. 408, pi. 29, fig. 9. — 

 Schmitt, 1935a, p. 196 (rev.). 



Recognition characters. — Integument, except 

 dorsal part of carapace and of legs, more or less 

 membranous. Carapace about half as long as ab- 

 domen; cephalic portion about twice as long as 

 thoracic, nearly flat above, anteriorly rugose and 

 covered with short, rigid hairs. Rostrum large, 

 flanked on each side at base by a large spine, 

 spiny beneath in midline. A small upcurved spine 

 behind eye on anterior margin, and a minute 

 lateral spine behind cervical groove. Eyestalks 

 concealed, pubescent above; corneal surface small. 

 Antenna a little less than twice as long as cara- 

 pace. 



Chelipeds stout, a fringe of long hairs below; 

 hands with an external, dentate ridge above, a 

 median row of acute spines and an internal line of 

 stiff hairs; immovable finger curved, movable 

 finger much longer, denticulate above at base, cut- 

 ting edges of both toothed near base; carpus 

 grooved on outer face with a row of small spines 

 and a strong marginal spine below, a row of small 

 teeth on inner margin, and six acute spines along 

 distal margin above; merus with a small spine 

 above and a row of spines beneath. First pair of 



walking legs hairy at tips and along lower mar- 

 gin; merus with a strong spine at base. Remain- 

 ing legs hairy at tips. 



Abdomen gradually increasing in width from 

 first to fourth segment, fifth narrower posteriorly, 

 sixth subquadrate; lateral portions of third and 

 fourth segments densely pubescent and all with 

 pleura marked off by an impressed line. Tail fan 

 densely hairy distally. Uropodal endopods trun- 

 cate and with a median rib and costate outer 

 border; exopods rounded distally and with two 

 ridges. Telson broad, subquadrate, with an im- 

 pressed median line. 



Measurements. — Length of body: males, 61 

 mm. ; females, 63 mm. 



Variations. — Schmitt (1935b) mentioned the 

 variability in spination of the lower border of the 

 rostrum and multiple spination or lack of spines 

 behind the cervical groove. Young specimens 

 often lack these spines. 



Color. — Gray, blue, or yellowish gray dorsally, 

 tinged with light blue medially on tail fan and 

 on fifth segment of abdomen, interlaced with uni- 

 form light lines; an oblique blue spot on side of 



Figure 80. — Upogebia affinis (Say). A, rostral re- 

 gion and eyes of semiadult female in dorsal view ; 

 B, rostral region of semiadult female in lateral 

 view; C, major chela (after de Man, 1927). 



MARINE DECAPOD CRUSTACEANS OF THE CAROLINAS 



103 



