378 



A. E. Verrill — Decapod Crustacea of Bermuda. 



N. lat. 41° 30', in Sargassum, 1872. Soutliward it is abundant along 

 the Gulf Stream to Florida, Cuba, and the Gulf of Mexico. Few 

 of the Bermuda specimens carried eggs; most are quite young. 



Achelous anceps (Sans.) Stimpson. 



Lupea anceps Saussure, Crust. Antilles, Mex., Mem. Soc. Phys. Hist. Nat.. 



Geneve, -xiv, p. 484 [18], pi. ii, fig. 11-116, 1858 (Cuba). 

 Npiitunns anceps A. M.-Edw., Arch. Mi;s. Nat. Hist., x, p. 328, 1861 ; Miss. 



Sci. Max., V, p. 313, 1879. Eankin, Ann. N. York Acad. Sci., xii, p. 530, 



1900. S. I. Smith, Annual Rep. U. S. Fish Comm. for 1895, p. [30J, 1886 



(Cape Hatteras). 

 Lupa Duchassagni Desb. and Schramm, Crust. Guadeloupe, p. 39, pi. iv, 



fig. 25 (t. Stimpson). 

 Fortuniis (Achelous) anceps {piars) M. J. Rathbun,* Anier. Naturalist, vol. 



xxxiv, p. 140. 

 Neptunus veniralis A. M.-Edw., Exp. Sci. Mex., v, pi. xi, fig. 3, 1879. 



Rathbun, Brach. and Macr. Porto Rico, p. 45. 

 Achelous anceps Stimpson, Ann. Lye. Nat. Hist. N. York, p. 113, 1871. 



Figure 26. Plate XX, Figures 1, 2. Plate XXVII, Figure 4. 



This species is easily recognizable by the long, shai']), posterior 

 lateral spines; the four very short, obtuse, unequal frontal teeth; and 



Figure 26. — Achelous anceps, female, enlarged II2 times; a, chela. 

 Saussure. 



After 



the two distal spines, one behind the othei', on the chelfe, besides 

 other obvious characters. The two middle frontal teeth are much 

 smaller than the others. The lateral teeth are acute and curve 



* Miss Rathbun (loc. cit.), in her analytical table, placed anceps in a group with 

 short posterior lateral spines. She informs me that she then had another species 

 in mind. 



