OXYSTOMATOUS AND ALLIED CRABS OF AMERICA 35 



DROMIDIA LARRABUREI Rathbun 



Figure 13; Plate 7, Figures 4, 5 



Dromidia sarraburei (by error) Rathbun, Proc. U. S. Nat. Mus., vol. 38, p. 553, 

 pi. 48, fig. 4, Oct. 20, 1910 (type locality, Bay of Sechura, Peru; types, U. S. 

 N. M. no. 40475). 



Dromidia segnipes Weymouth, Leland Stanford, Jr., Univ. Publ., Univ. Ser., 

 no. 4, p. 15, pi. 1, figs. 1, 2, Nov. 12, 1910 (type locality, Monterey Bay; type 

 in Stanford Univ. Mus.). 



Dromidia larraburei Schmitt, Univ. California Publ. Zool., vol. 23, p. 183, pi. 33, 

 fig. 1, 1921. — Rathbun, Bull. Amer. Mus. Nat. Hist., vol. 48, p. 619, pi. 33, 

 fig. 1-4, 1923; Proc. California Acad. Sci., ser. 4, vol. 13, p. 374, 1924. 



Diagnosis. — Carapace broader than long; lateral margins of pos- 

 terior two-thirds converging posteriorly. Fronto-orbital border in 

 adult less than half width of carapace, in small specimens half width 

 of carapace. Branchial fm-row deeply incised. A deep crescentic 

 furrow either side of cardiac region. Carapace liigh, in front sub- 

 globular. 



Description. — Frontal teeth stout, bluntly rounded at tip. Ex- 

 ternal angle of orbit not advanced. Tooth at branchial furrow 

 acute, directed outward and behind a well-marked triangular notch. 



Figure IZ.— Dromidia larraburei, female holotype (40475): Outline of carapace, natural size. 



The protuberance on the pterygostomian region, adjacent to the 

 buccal tooth is large and smoothly rounded, not dentiform. The 

 small tubercles on upper surface of palm are ball-shaped, not pointed. 

 Ambulatory legs broader than in antillensis, the last two pairs shorter 

 than in that species. 



Color. — In alcohol, yellowish tan, tips of chelipeds flesh color; 

 color in life similar (Weymouth). 



Measurements. — Ovigerous female (41839), length of carapace 32, 

 width 35.6 mm. 



Range. — Monterey Bay, CaHf., to Peru and Galapagos Islands. 

 Low tide to 60 fathoms. 



Material examined. — See table 9, page 42. 



