Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-28 153 



Family: PORTUNIDAE. 



Genus: BATHYNECTES Stimpson. 

 Bathynectes longipes (Eisso). 



Plate 51. 



Type: Risso described this species in his report on the Crustacea 

 of Nice, without citing specific locality. 



Distribution: Mediterranean Sea and adjacent shores of the His- 

 panic Peninsula, also the Atlantic Ocean in the vicinity of the British 

 Isles. Usually from 80 to 1000 meters depth, more rarely at 40 meters. 



Material examined : One female dredged in 19 fms., grassy bottom, 

 10 miles south of Cagliari, Sardinia. 



Technical description : Carapace about five-sixths as long as wide, 

 with the interorbital region slightly more than one-third of the total 

 width, rounded and with four shallow, rounded teeth, of which the 

 inner or submedian pair are a trifle the smaller ; there are two closed 

 sinuses on the superior orbital margin; the postorbital angle bears a 

 strong, rather broad triangulate tooth; the anterolateral margin is 

 short, convex, set with four teeth, of which the first and third are 

 small, acute, subequal to each other, while the second and fourth spines 

 are subequal to each other and of similar shape to the first antero- 

 lateral spine but are much longer with a more acute tip; there is a 

 transverse ridge extending across the carapace from tip to tip of the 

 last or lateral spine; the postlateral margin is much longer than the 

 anterolateral, convergent and outlined by a light beading; the pos- 

 terior margin is short ; the female abdominal belt is seven-segmented. 

 The dorsal surface of the carapace is fijiely setose. 



The eyes are large, spherical, black. 



The chelipeds are equal, the merus short, trigonal ; the carpus nearly 

 as long as the merus, with a pronounced sharp spine at the inner 

 angle ; the palm is nearly as high as long, the upper margin cristate ; 

 the outer face slightly swollen and with two longitudinal ridges in 

 addition to the earinated lower margin. The lower finger is nearly 

 as long as the palm, thick, with a carina along its lower margin, the 

 cutting edge dentate; the upper finger is stocky but slenderer than 

 the lower, grooved, the tips of both fingers are of a much darker color 

 than the remainder of the claw. 



