THE CANCROID CRABS OF AMERICA 137 



male (24476). Arroyo; February 4; 1 young (24477). Vieques 

 Island; February 8; FisTi Hawk; 2 young females (24478). 



DOMINICA.— A. Hyatt Verrill; 1 male (32710). 



ST. LUCIA.— Port Castries; December 2, 1887; Albatross; 1 male 

 (22042). 



MEXICO.— Vera Cruz; 1926; C. R. Orcutt; 1 male (60078). 



BRITISH HONDURAS.— Stann Creek; shallow water; Rev. W. 

 A. Stanton; 1 male (22595); common. 



NICARAGUA.— Gorda Point; beach 1 mile N. of Point; March 7, 

 1915; Charles G. Holland, U. S. S. Leonidas; 1 male (61380). 

 Greytown; Charles W. Richmond; 1 female (17909). 



PANAMA.— Fox Bay, Colon; March 31, 1911; Meek and Hilde- 

 brand; 2 young (Field Mus.), 3 young (44202); received from Smith- 

 sonian Biological Survey. 



COLOMBIA.— Sabaiilla; 1884; Albatross; 3 young (17946). 



CURASAO. — Bay of Wacao; shallow water; stony bottom; Octo- 

 ber 6, 1905; J. Boeke; 1 large male (returned to sender). 



BERMUDAS.— Hungry Bay; July-September; F. S. Gosling; 1 

 male (25446). 



BRAZIL.— 1876-1877; R. Rathbun, Hartt Explorations; 1 young 

 (40586). Mamanguape stone reef, State of Parahyba; June 23, 

 1899; A. W. Greeley, Branner-Agassiz Expedition; 1 male, 1 female 

 (25751). Copacabana, Rio de Janeiro; out of sand with forked 

 stick; week of September 1, 1925; Carlos Moreira; 2 females (1 

 ovigerous) (60974); received through W. L. Schmitt. ConceiQao de 

 Ytanham, near Santos, State of Sao Paulo; June, 1914; H. Lueder- 

 waldt; 1 male (48303); received from H. von Ihering. Iguape, 

 State of Sao Paulo; R. Krone; 1 male (47839); received from H. von 

 Ihering. Saco, Sao Francisco, State of Santa Catharina; 1923; Dr. 

 C. Fernetz; 1 male; lent by Buenos Aires Museum. 



ARENAEUS MEXICANUS (Gerstaecker) 



Plate 58, Figure 1; Plate 61 



Eudenota mexicana Gerstaecker, Arch. f. Naturg., vol. 22, pt. 1, 1856, p. 



131, pi. 5, figs. 3 and 4 (type-locality, Mexico; type in Berlin Mus.). 

 Arenaeus bidens Smith, Kept. Peabody Acad. Sci., 1869, p. 90 (type-locality, 



Corinto, Nicaragua; types in Mus. Comp. ZooL). 

 Neptunus mexicanus A. Milne Edwards, Crust. R^g. Mex., 1879, p. 212, pi. 42, 



fig. 3-3e. 

 Arenaeus mexicanus Faxon, Mem. Mus. Comp. ZooL, vol. 18, 1895, p. 22. — 



Rathbun, Proc. U. S. Nat. Mus., vol. 38, 1910, p. 537, pi. 37, fig. 2. 



Diagnosis. — Two frontal teeth. Two spines at distal end of manus. 

 Outer spine the smallest of the wrist spines. 



Description. — Bears.a strong resemblance to A. crihrarius. Interre- 

 gional furrows in center of carapace deeper and inner branchial lobule 

 more prominent. Only two frontal teeth (between the orbital teeth), 



