68 Addis on E. Vcrrill, 



Craungon Bosc, an x, was used for a species like A. avarus 

 (Hist. Crust., ii, p. 96, pi. XIII, fig. 2). 



Cryptophtalmus Rafinesque, 1814, type, C. ruber (Precis, dec. 

 Somiol.). C. ruber belongs to the brevirostris group. 



Dienesia Woodward. (Ann. and Mag. Nat. Hist., 1835, p. 

 552.) Type, D. megacheles (=rubra W. "not of Olivi). This 

 belongs to the first group of Coutiere, which also includes 

 A. candei; A. dentipes; A. clatnator. Racilius Bate is equivalent. 



Alpheus Fabr., 1798, had for its type, A. malabaricus. This 

 species belongs to Coutiere's fifth group, which also includes 

 A. armillatus; A. heterochcelis ; A. bahamensis; A. packardii. 



Alpheoides Paulson, 1875 (Res. Crust. Mer Rouge, pp. 101- 

 105), was proposed for species like A. Iccvis; A. insignis. 

 A. Icevis may be taken as the type. It belongs to the macrocheirus 

 group. 



The first group, named Dienesia by Woodward in 1835, might 

 well be kept as a generic, or at least subgeneric group, On account 

 of its twisted large cheliped and biunguiculate ambulatory legs, 

 with some other less obvious characters. 



Alpheus (Dienesia) candei (Guerin) or Crangon candei. . Twisted-clmv 

 Snapping Shrimp. 



Alpheus candei Guerin, in La Sagra's Hist. Cuba, part 2, vii, Crust... 

 p. xix, pi. ii, fig. 9, ga, 1857. Kingsley, Carcinol. Notes, V. Bull. 

 Essex Inst., xiv, p. 124 (20), 1883; Amer. Nat, p. 717, fig. 36, 1899. 

 Rankin, Ann. N. Y. Acad. Sci., xii, p. 541, 1900. Coutiere, Proc. U. S. 

 Nat. Mus., vol. xxxvii, p. 486, fig. I, 1910. 



Alpheus transverso-dactylus (pars) Kingsley, Bull. U. S. Gtol. Survey, 

 iv, 196, 1878. 



Alpheus dentipes Rathbun, M. J., Brachyura and Macrura of Porto Rico, 

 p. 105, 1901. 



TEXT FIGURE sb. PLATE XIX, FIGURES 33 d (chelae). PLATE XX, FIGURE 

 i (photo). PLATE XXI, FIGURES 6, 6a (chelae). PLATE XXIV, 

 FIGURES 2, 3, 4 (chelae). PLATE XXV, FIGURES 7, 8, after Guerin. 

 PLATE XXIX, FIGURES la t (details). 



Color of body, in life, is pale green with indefinite whitish 

 patches, and finely speckled with orange-red. On the gastric 

 region of the carapace there is a dark green patch. Telson and 

 uropods more or less orange. Large chela whitish at base, fol- 

 lowed by a band of orange-brown on inner surface, followed by 



