168 Bulletin, Vanderhilt Marine Museum, Vol. Ill 



curved; the dactyl is a little longer, curved, beak-like, blunt-tipped. 

 The smaller chela has the merus and carpus similar to that of the 

 larger ; the propodus is elongate, very slender, the palm Avith a spine 

 on either side at the base of the hinged finger; the fingers subequal, 

 long and slender, tapered, almost as long as the palm. 



The second legs are very slim. The carpus is five-jointed ; the first 

 article three-fourths as long as the merus, the second joint one-half as 

 long as the first ; the third and fourth articles subequal, each one-third 

 shorter than the second ; the fifth article twice as long as the fourth ; 

 the palm is two-thirds as long as the fifth article; the fingers are 

 tapered, about as long as the palm, bristly at the tip. 



The ambulatories are slender, each with a series of about seven 

 articulated spines on the inferior margin of the propodus ; the dactyl 

 short, curved, acuminate. 

 Synonymy. — Alpheus formosus Gibbes, Proc. American Assoc. Adv. 



Sci., vol. Ill, p. 196, 1851. — Rathbun, Proc. Wash. Acad. Sci., 



vol. II, p. 152, 1900 ; Bull. U. S. Fish. Comm., vol. 20, pt. 2, p. 



106, 1901. 

 Alpheus poeyi Guerin, in La Sagra, Hist. I'ile de Cuba, pt. 2, Zool., 



vol. 7, Crust., p. 19, vol. VIII, pi. 2, figs. 10, 10a, 1857. 

 Alpheus wehsteri Kingsley, Proc. Acad. Nat. Sci. Phila., vol. 31, p. 



416, 1879; Bull. Essex Inst., vol. 14, p. 3, pi. 2, fig. 5, 1883.— 



Eankin, Ann. N. Y. Acad. Sci., vol. XI, p. 249, 1898 ; op. cit., vol. 



XIII, p. 543, 1900. 

 Crangon formosus Hay and Shore, Bull. U. S. Bur. Fish., vol. 35, p. 



384, pi. 26, fig. 5, 1918. — Schmitt, Univ. Iowa Studies Nat. Hist., 



vol. 10, No. 4, p. 73, 1924 ; Bidjr. tot Dierk., Amsterdam, Afl. 23E, 



p. 65, 1924. 

 Alpheus formosus or Crangon formosus A. E. Verrill, Trans. Conn. 



Acad. Arts and Sci., vol. 26, p. 84, pi. 19, figs. 1, 2, pi. 20, fig. 3, 



pi, 23, figs. 5, a, b, pi. 29, figs. 4, a-u, pi. 25, figs. 6-6a (type of 



A. poeyi) ; text figs. 5d and 6a, 1922. 

 Alpheus panamensis Zimmer, Zool. Jahrb., Suppl. 11, heft 3, p. 391, 



text figs. N-V, 1913. 



^O"- 



Alpheus armillatus H. Milne Edwards. 



Plate 60. 



Type: The type came from the Antilles and is deposited in the 

 Paris Museum. 



