65 



Dana, Palcemonetes Heller, Urocaris Stimpson, and Typ- 

 ton Costa ; genera which have the second pair of thoracic 

 feet larger than the first, the carpus never annulate and 

 the mandible without a palpus. 



GEXUS PONTONIA Latreille. 



82. Pontonia domestica Gibbes, Proc. Am. Assoc. Adv. Sci., 

 1851, iii, p. 196. Kingsley, Proc. Acad. Nat. Sci., Philadelphia, 1878, 

 p. 95. 



South Carolina, Florida. 



83. Pontonia margarita Smith, American Naturalist, 1869, iii, 

 p. 245. 



Panama. 



GEXUS ANCHISTIA Dana. 



84. Ancnistia americana Kingsley, Proc. Acad. Nat. Sciences, 

 Philadelphia, 1878, p. 96. 



Florida. 



GEXUS UROCARIS Stimpson. 



85. Urocaris longieaudata Stimpson, Proc. Acad. Nat. Sci., 

 Philadelphia, 1860, p. 39. 



Carolina. 



GENUS PAL^MONETES Heller. 



88. Palsemonetes vulgaris Stimpson, Annals N. Y. Lyceum, 

 1871, x, p. 129. Smith, U. S. Fish Comm., 1871-2, p. 550, pi. II, f. 9. 

 Palcemon vulgaris Say, Jour. Acad. Nat. Sci., Philadelphia, 1818, i, p. 

 248. 



Massachusetts Bay to Florida. 



87. Palaemonetes carolinus Stimpson, Annals. N. Y. Lyceum, 

 1871, x, p. 129. 



New Jersey to South Carolina. 



88. Palsemonetes paludosa Kingsley, Proc. Acad. Nat. Sci., 

 Philadelphia, 1878, p. 97. Hippolyte paludosa Gibbes, Proc. A. A. A. 

 S., 1851, iii, p. 197. Palaemonetes exilipes Stimpson, Ann. N. Y. Lye., 

 1871, x, p. 130. Smith, Rep. U. S. Fish Comm., 1872-3, p. 641, pi. I, 

 f. 1. 



