158 BULLETIN 166, UNITED STATES NATIONAL MUSEUM 



Description (after Bell).— Carapace nearly orbicular, somewhat pro- 

 duced and narrowed anteriorly, minutely punctate, covered, except 

 at the anterior portion, with very small distinct granules, of which a 

 distinct line borders the anterolateral portion; anterior margin waved, 

 the subhepatic angle obsolete, marked only by a shght elevation. 

 Front broad, shghtly emarginate; lateral and posterior margin much 

 rounded, the spines placed in almost a right-angled triangle, nearly 

 equal, recurved at apex. Chehpeds with the arm everywhere tuber- 

 culated, the wrist slightly granulated on inner side, hand minutely 

 punctate. External maxUhpeds as in P. orbicularis. Abdomen of 

 female slightly granulated at posterior and lateral portions. 



Color. — Pale buff (Bell). In recent alcohoHc specimens, red above, 

 bluish white below (Stimpson). 



Measurements. — Type figured, length without spine 33 mm, breadth 

 the same. 



Range. — Panama (Stimpson); Galapagos Islands (Bell); Ecuador. 



Material examined. — 'Ecnador: Cape San Francisco; 2 fathoms; off 

 river mouth; mud and debris; February 11, 1934; Hancock Galapagos 

 Expedition, no. 215; 1 male, 1 female, 6 young (69292). 



PERSEPHONA SUBOVATA (Rathbun) 



Plate 43, Figures 4, 5 



Myra subovata Rathbun, Proc. U. S. Nat. Mus., vol. 16, p. 256, 1893 (type 

 locality, Albatross station 3014; type, U.S.N. M. no. 17385). 



Persephona subovata Rathbun, Proc. U. S. Nat. Mus., vol. 21, p. 613, 1898. 



Persephona edwardsii Boone, Bull. Vanderbilt Mar. Mus., vol. 2, p. 53, pi. 10, fig. 

 A, 1930; not P. edwardsii Bell, 1855. 



Diagnosis. — Three spines on carapace. Front produced. Chelipeds 

 long and rather slender. 



Description.— Ca,T£Lip£ice perceptibly longer than broad; front pro- 

 duced, ascending, its convexity continued backwq^rd on carapace and 

 accented by a depression on either side; teeth of front well marked, 

 inner margin longer than outer. Anterolateral margin of carapace 

 sinuous. A definite line of granules on lateral margins, visible from 

 above. Granules of dorsum small, depressed and widely separated 

 except on intestinal region. Posterior spines conical, subequal, the 

 median forming an obtuse angle with lateral pair. Chelipeds narrow, 

 in adult male three times as long as carapace minus spine ; outer mar- 

 gin of palm nearly three times as long as wide; granules of merus 

 larger on proximal than distal half. 



Measurements. — Largest male (22136), entire length of carapace 38; 

 without spine 34.2; width 29.2 mm. 



Range. — Lower Cahfornia, Mexico, to Bay of Panama; 20 to 52 

 fathoms. 



Material examined. — See table 49, page 159. 



