416 Dr. A. S. Packard, Jr's Revision of the 



little paler than the mandibles. Antennae short, scarcely clavate, ba- 

 sal two-thirds red, outer third brown. Prothorax entirely red, smooth, 

 polished, with a blunt transverse carina, rounded on the sides. Thorax 

 sparsely and slightly punctured, black, polished, a little silvery pubes- 

 cent on the flanks and on the propodeurn, which is red, black below, 

 at base with longitudinal slightly diverging, rather irregular ridges, 

 much coarser than usual, which posteriorly on thehorizontal enclosure 

 become transverse and curvilinear, much as described in the succeeding 

 species, but larger ; the ridges above are fine and numerous, but becom- 

 ing fewer and much larger on the flanks, which are covered with a coarse 

 net-work of fossulets. Tegulae and insertion of wings reddish; win^s 

 dark and iridescent near the outer edge, nervures reddish ; anterior le»s, 

 including the coxae, entirely red, middle and hind trochanters red at 

 tip, middle and hind legs red, except the hind femora which are black, 

 though all the trochanters are red. Abdomen long and slender, two 

 basal joints slender, red, suddenly thickened towards the tip, becoming- 

 rounded, clavate, tip very acuminate. 

 Length, .40 inch. 



9 . Head more transverse, front broader; below, and including the 

 indentations of the eyes, the pubescence is of a rich golden hue; only 

 the upper part of propodeuin corresponding to the enclosure is red, the 

 sculpturing is the same ; legs entirely red, hind femora concolorous 

 with the rest; tip of abdomen with an unusually sharp mucro. 



Length, .45 inch. 



Florida, (Norton). 



Trypoxylon rubro-cinctum, n. sp. 



9 . Head with the front narrower than usual, as the ocelli nearly 

 touch the eyes; much more coarsely punctured than the succeeding 

 species, becoming hairy towards the bicarinate prominence which is 

 acute but truncate at extreme tip ; clypeal region silvery pubescent ; 

 surface of the clypeus broad, not ridged mesially, front edge slightly 

 thickened towards the tip, mesially with a semicircular excavation, 

 thus giving a bilobate appearance to the edge; mandibles red, smooth, 

 edges distinctly emarginate; palpi short and thickly jointed, minute, 

 narrowly testaceous at tip ; antennae black, slenderer than in T. tridenta- 

 tum; sutures well defined. Prothorax well crested, hirsute posteriorly ; 

 thorax above minutely and sparsely punctured, smooth and polished ; 

 meta-scutellum with a long, dense, silvery hirsuties, especially on the 

 sides. Propodeurn with no distinct enclosure, but at base anteriorly 

 with very minute, transverse, almost imperceptible lines, more distinct 



