124 Bulletin, Vanderhilt Marine Museum, Vol. II 



sinuses on the outer half of the superior border. There are four 

 sharply defined teeth on the anterolateral margin besides the post- 

 orbital tooth. The first anterolateral tooth is slightly stronger than 

 the postorbital tooth. The first anterolateral tooth is blunt, slightly 

 stronger than the postorbital tooth ; the second tooth is about one and 

 one-half times as wide basally as the first, which it resembles in shape ; 

 the third anterolateral tooth is nearly as wide as the second but more 

 acuminate towards the tip; the fourth tooth, situated at the lateral 

 angle, is the most acuminate of the series and usually has a short 

 median riblet running inward. Inside of and separated from each 

 of the first three anterolateral teeth is a rough tooth-like lobe ; there 

 are also rough eminences in the postfrontal and mesogastric and 

 anterior branchial regions; also transverse lines of fine granulations, 

 especially on the gastric region. The regions of the carapace are 

 sharply defined, the urogastric and cervical grooves being especially 

 deep. 



The chelipeds are unequal in the male, the left usually being the 

 larger, equal in the female ; the merus is trigonal, short, the carpus 

 convex, with the upper surface rough with transverse granulae in 

 lines, a sharp tooth at the inner angle ; the palm is wider distally than 

 proximally with the outer face convex, relatively smooth, except along 

 the upper margin, where there is the semblance of a longitudinal 

 groove; the fingers are black, two-fifths as long as the palm, spoon- 

 tipped, each with two or three longitudinal grooves. 



The ambulatories are slender, decreasing but little in length from 

 the first to fourth pairs ; each with the lateral margin heavily fringed ; 

 the dactyl long, slender, acuminate tipped. 



The eye is small, set on a stocky stalk. 



Synonymy. — Chloridius floridanus Gibbes, Proc. Amer. Assoc. Adv. 

 Sci., vol. 3, p. 175, 1850. — Stimpson, Ann. Lye. Nat. Hist. N. Y., 

 vol. 7, p. 209, 1862.— S. I. Smith, Trans. Conn. Acad. Sci., vol. 2, 

 p. 3, 1869.— KiNGSLEY, Proc. Acad. Nat. Sci. Phila., p. 395, 1879. 

 — Kankin, Ann. N. Y. Acad. Sci., vol. 11, p. 281, 1898. 



Leptodius floridanus A. Milne Edwards, Miss. Sci. Mex., vol. V, pt. 1, 

 p. 268, pi. 49, figs. 2-2a, 1880.— Rathbun, M. J., Proc. U. S. Nat. 

 Mus., vol. 16, p. 536, 1893; Ann. Inst. Jamaica, vol. 1, p. 15, 

 1897 ; State Univ. Iowa, Bull. Lab. Nat. Hist., vol. 4, p. 270, 1898 ; 

 Proc. Wash. Acad. Sci., vol. 2, p. 139, 1900 ; Bull. U. S. Bur. Fish., 

 vol. 20, pt. 2, p. 27, 1901 ; State Univ. Iowa, Studies in Nat. Hist., 



