PHALANGE JE OF THE UNITED STATES. 37 



konute, class die Augen iibersehen siad, so bin ich doch von deren 

 Mangel iiberzeugt, da die helle Farbe des Thieres eine sehr gute Be- 

 leuclitung von oben gestattete, so dass eine Vergrosserung von 100 

 mal im Durchmesser mit grosser Deutlichlieit angewandt werden 

 konnte." — Tellkanipf. 



Family GONYLEPTID^. 



Cephalothorax very much enlarged, and more or less 

 completely overshadowing the abdomen. Coxte of the 

 posterior pair of feet directed backwards, very much 

 enlarged. Tarsi not'multiarticulate. 



Genus I. GONYLEPTES Kirbt. 



GONYLEPTES Kirhy. Trans. Linn. Soc, vol. xii, p. 452. 



"Mandibles chelate. Palpi unguiculate. Tarsi 6-10 

 articulate." 



The characters of this genus here given are those of 

 Mr. Kii'by. 



17. Gonyleptes ornatum Say. 



G. OENATUJI Say. Journ. Acad. Xat. Sciences, 1st Series, vol. 2, p. 68. 



Dorsum smooth, of a dark ferruginous color, darker in the central 

 portions and at the position of the eyes, and often with a pair of 

 nearly black spots on the posterior third of a 



the cephalothoracic portion. Cephalotlioracic 

 scutum bordered with small spines, which are 

 more or less obsolete anteriorly, also furnished 

 with an irregular transverse series near its 

 posterior edge, and with two central, widely 

 separated, pairs of obtuse spines or tubercles 

 in its middle and posterior thirds respectively. 

 Ahdomincd segments bordered with equidistant, 

 tuberculous spines. Eye eminence scarcely per- 

 ceptible, without spines. Eyes widely separa- 

 ted, black. Palpi of the same color as the body, ^*^^nSral "siz^)1^ ^^ uSer 

 or a little lighter, without spines, but with the siu-face (natural size) ; c, 



„,.,., , . . . •, penis (magnified.) 



mai'gins of their third and fifth joints with 



obtuse crenulations, besides scattered ones on other joints ; third and 

 fifth joints widely dilated. Leys dark brown, roughened with more 

 or less pronounced, small, obtuse spines ; their metatarsal joints 



