1818.] APPENDIX, &c. 445 



Appendix to the Account of the Crustacea of the United 

 States* By Thomas Say* Read December 1. 



The following species were discovered since the pub- 

 lication of their respective genera, in the preceding part 

 of this work. 



Genus LUPA. 

 For generic characters see p. 65. 



L. maculata^, Clypeus four-toothed; thorax reticula- 

 ted, covered with minute granules; anterior feet three- 

 spined on the third joint before; carpus two-spined; ab- 

 domen, second segment mucronate each side. 



Inhabits coast of Georgia and Florida. 



Cabinet of the Academy. 



Thorax crowded with minute granules, distributed 

 equally, and with the anterior and posterior feet above, 

 chocolate brown with crowded, suborbicular, unequal, 

 white spots, giving to the whole surface a reticulated ap- 

 pearance, lateral teeth ciliated; clypeus with four small 

 teeth, of which the intermediate ones are rather larger 

 and more distant, septum of the intermediate antemice 

 prominent, dentiform; anterior canthus of the eye ob- 

 tusely dentiform above, and more prominently so beneath; 

 anterior feet, third joint three-spined before, spines un- 

 equal, anterior ones largest, an obtuse spine or angle se- 

 parated from the hind tip by an impressed line, which 

 curves above to the middle of the tip, and thence towards 

 the anterior edge; carpus with three elevated, or equal 

 lines, of which two are abbreviated and the outer one 

 terminated in a spine, inner edge with a spine, and two 



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