THE SPIDER CRABS OF AMERICA 505 



tuberciiliform tooth on the outer margin. The segment is wide, as 

 in hrancMalis, but the tubercle on its ventral surface is much lower,^ 

 almost obsolete. 



The right chcliped, the only one present, is rather feeble, and is 

 probably not fully developed; the arm has a row of a few spaced 

 tubercles above; the carpus a few granules outside. 



The legs have a row of long hairs on each side of the dorsal aspect 

 but are devoid of spines; the first two pairs are very slender. Last 

 segment of male abdomen shorter than in 

 hrancMalis. 



Measurements. — Male, holotype, entire 

 length of carapace 10.7, length of horns 

 1.4, width of carapace including spines 8.4, 

 excluding spines 8.2 mm. Male (Antigua) , 

 entire length of carapace 16.7, length of 

 horns 2.4, width of carapace including 

 spines 13.6, excluding spines 13.3 mm. 



Range. — Cuba; Antigua; Barbados. 



Material examined. — ^ .. ^^ 



i/i*v .vw/ t,v,^ ^ Pj^ 144.— Microphrys interruptus 



Ensenada de Cajon, off Cape San (48753), basal antennal article, 

 Antonio, Cuba; May 22-23, 1914; station >^^^ 

 11, Tojnas Barrera Expedition; Henderson and Bartsch, collectors; 1 

 male, holotype (48753), with Rhizocephalid parasite attached to 

 abdomei\. 



Fort Barclay, English Harbor, Antigua; July 9, 1918; Barbados- 

 Antigua Exped., Univ. Iowa; 1 male, 1 young female (Mus. S. U. I.). 



Needham Point, Barbados; May 18, 1918; Barbados- Antigua 

 Exped., Univ. Iowa; 1 male (Mus. S. U. I.). 



MICROPHRYS TRIANGULATUS (Lockington) 



Plate 177 



Mithraculus triangulatus Lockington, Proc. California Acad. Sci., vol. 7, 



1876 (1877), p. 73 [11] (type-locality, Gulf of California; types not extant). 

 Mithrax triangulatus Kingsley, Proc. Boston Soc. Nat. Hist., vol. 20, 1879, 



p. 149. 

 Microphrys triangulatus Ratiibun, Proc. U. S. Nat. Mus., vol. 21, 1898, 



p. 578. 

 Microphrys hrancMalis Rathbun, Proc. Washington Acad. Sci., vol. 4, 1902, 



p. 285 (part: specimens from Galapagos Islands). 



Diagnosis. — Carapace short and broad, nodulose, nodules almost 

 smooth. Three marginal teeth or lobes on basal segment of antenna. 

 Chelipeds of male very long and strong, palms high. 



Description. — Carapace little longer than broad, thick and nodulose, 

 the nodules ornamented sparingly with low granules, so as to appear 



