OP PHILADELPHIA. 15 



acute, spinules ; rufo-ferruginous, two impressed transverse lines 

 before the middle ; ocular tubercle prominent, slightly contracted 

 at base, crowned with numerous, robust, acute spinules ; clypeus 

 hardly elevated ; feet rather short ; pectus with numerous, minute 

 acute granules ; venter with but few. [68] 



Length, female nearly-seven-twentieths of an inch. 



Much the largest species I have seen. 



Genus GONYLEPTES Kirby. 



Feet moderate ; tarsi from six to ten-jointed; mandibles chel- 

 ate ; maxillae none ; palpi unguiculated. 



G. ORNATUM. — Ocular tubercle hardly elevated, unarmed ; 

 hind feet remote; two erect spines behind. 



Inhabits Georgia and Florida. 



Cabinet of the Academy. 



Body ovate reddish-ferruginous, destitute of granules, edge 

 slightly contracted over the insertion of the fourth and fifth pairs 

 of feet, two small acute tubercles on the middle of the disk, and 

 two large, prominent, erect, acute spines on the hind margin, no 

 impressed line before the middle, an anterior arcuated yellow 

 transverse line connected to a posterior undulated one by a yellow 

 line which is crossed near the middle by two obsolete yellow bands ; 

 ocular tubercle slightly raised, unarmed ; distance between the 

 eyes much greater than their diameters, orbits black ; clypeus 

 abruptly somewhat acute in the middle of the tip : mandibles 

 rather small, the fingers subequal, and crossing each other at tip ; 

 palpi robust, and when at rest concealing the mandibles ; penul- 

 timate articulation dilated on the exterior side and elongated and 

 depressed : terminal joint half as long as the preceding, cylindrical ; 

 terminal nail elongated, moveable capable of being inflected ; [69] 

 feet short, not three times as long as the body, three anterior 

 pairs before the middle, posterior ones behind the middle and re- 

 mote from the others ; fourth and fifth pairs with double nails : 

 abdomen, segments with a series of equidistant, minute tuber- 

 cles. 

 . Length one-fifth of an inch. 



This remarkably distinct species, we first discovered on Cum- 

 berland island Georgia, and subsequentlymany specimens occurred 

 1821.] 



