176 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



RANDALLIA BULLIGERA Rathbnn 



Figure 38; Plate 50, Figures 1, 2 



Randallia bulligera Rathbun, Proc. U. S. Nat Mus., vol. 21, p. 614, pi. 44, fig 6, 

 1898 (type locality, Magdalena Bay, 12 fathoms; holotype, U.S.N.M. no. 

 21600); Harriman Alaska Expedition, vol. 10, p. 70, 1904. — Holmes, Occ. 

 Pap. California Acad. Sci., vol. 7, p. 101, 1900. (Not Weymouth, Stanford 

 Univ. Publ., Univ. Ser. no. 4, p. 19, 1910.) 



Diagnosis. — Carapace subcircular, tiiberciilate ; tubercles large, 

 globular, separate. Branchiohepatic groove deep. Two pairs of 

 posterior protuberances broad and blunt. 



Description. — Carapace very slightly longer than broad, dorsally 

 covered, except on the frontal region and the branchio-hepatic, 



Figure iS.— Randallia bulligera, male (21600): Carapace 11.6 mm long. 



cardiac, and intestinal grooves, with large, smooth, rounded, bead- 

 like tubercles of different sizes and distinctly separated from one 

 another; intervening space pubescent. On the median line of the 

 intestinal region a little behind the middle, a short tubercle composed 

 of two or three smaller ones. Four posterior lobes, two branchial, 

 two on posterior margin; the middle two farther from each other 

 than they are from the lateral; lobes much shorter in female than in 

 male. Pterygostomian region with a prominent blunt tuberculated 

 projection. Front distinctly 2-lobed. Sternum and abdomen covered 

 with large tubercles. Maxillipeds with a longitudinal row of tuber- 

 cles through the middle of endognath and exognath; anterior half 

 pubescent. Prolongation of septum of branchial channel deeply 

 trilobed; exognath not reaching beyond base of lobes. Merus of 

 chelipeds covered with pointed tubercles; intervening spaces granu- 

 late; length about three-fourths the width of carapace in male, one- 

 half in female; distal half slightly smaller than proximal. Carpus and 



