1S2 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



Range. — Costa Rica to Panama. 



Material examined.— l&e^ides the male type above, one female was 

 taken at Secas Islands, Panama, m 15 fathoms, southwest of group; 

 nulUpores; February 22, 1934; station 251, Velero III, Hancock 

 Galapagos Expedition (69746). 



RANDALLIA CUKACAOENSIS Rathbun 



Plate 51, Figures 1-3 



Randallia curacaoensis Rathbun, Proc. BioL Soc. Washington, vol. 35, p. 101, 

 1922 (type locality, Curagao; holotype in Amsterdam Museum); Bijdragen 

 tot de Dierkunde, Amsterdam, vol. 23, p. 13, pi. 3, fig. 1-3, 1924 



Diagnosis. — No protuberances on posterior part of carapace. 

 Front bilobed. Margin of efferent channel trilobed. 



Description. — Female: Carapace subcircular, covered, except on the 

 anterior and anterolateral portions, with large, unequal, close-set, 

 pustulous granules; intestinal region well defined, cardiac region ill 

 defined, gastric and hepatic regions not deHmited. A granulated 

 tubercle on the hepatic region. The tuberculate anterolateral margin 

 terminates at the swollen and tuberculate pterygostomian protuber- 

 ance. Intestinal margin arcuate, without lobes or spines. Front 

 distinctly bilobed. Septum of branchial channel extending slightly 

 beyond the orbit, the edge with three shallow lobes, the inner sinus 

 shallow and arcuate, the outer one narrow and tapering to a point. 

 Chelipeds covered with flat granulations, coarse on the merus, becom- 

 ing gradually finer until near the fingers. Legs slender, subcylindrical, 

 finely granulate. Abdomen and exposed part of sternum of female 

 coarsely granulate. 



Measurements. — Female holotype, length of carapace 8.4, width 

 7.5 mm. 



Range.- — Known onl}^ from the type locaHty, Spanish Water, 

 Curagao; April 3, 1920; C. J. van der Horst collector; 1 ovigerous 

 female, holotype (Amsterdam Mus.), 1 immature female, paratype 

 (56907). 



RANDALLIA AMERICANA (Rathbnn) 



Plate 52, Figures 1, 2 



Ebalia americana Rathbun, Proc. U. S. Nat. Mus., vol. 16, p. 254, 1893 (type 



locality, Gulf of California, 29 fathoms; holotype, U.S.N. M. no. 17388). 

 Randallia americana Rathbun, Proc. U. S. Nat. Mus., vol. 21, p. 614, 1898. 



Diagnosis. — Carapace longer than broad, covered with tubercles 

 and granules. Front advanced, subtruncate. Hepatic and pterygo- 

 stomian regions prominent. Five well-developed posterior protuber- 

 ances. 



Description. — Entire surface of carapace granular, the small gran- 

 ules crowded; on the posterior two-thirds large granules or tubercles 

 predominate; they are acute, prominent, unequal. Cardiac and 

 intestinal regions separated by deep grooves from the branchial region 



