— 117— 



Studies on the North American PROCTOTRUPIDiS, 



with Descriptions of New Species from Florida. 



(PART I.) 



By William H. Ashmead, 



Jacksonville, FlDiicla. 



(Conlinutd from p. lOo, vol. HI.) 



(XXXIY. PROSACANTKA Noes.) 

 53 2. Prosacantha mandibularis n. sp. 



y. Length .07 inch. Kobu t, black. Thorax finely punctate and covered with 

 tine pubescence, metathorax opined. -Head, smooth, polished. Antennae short, en- 

 tirely black, the club stout, 4-jointed. Mandibles long, curved, with one long tooth 

 near tip, tips and tooth black. PJeuraj and abdomen polished. Legs pale brown. 

 Wings I'usco-hyaline, marginal vein but slightly developed ; there is no sligmal vein. 



Hal). — Florida. 



53 3. Prosacantha macrocera n. ^^^p. 



q' Length .07, O .10 inch. Black, subopaque, fine punctate, pubescent. Anten- 

 na" in r^ i2-jointed, filiform, much longer than the body. Legs rufous, cb.xa; black 

 at base ; abdomen short, broad. Wings dusky hyaline. 



Hab. ^Floiila. 



CO 4. Prosacantha fuscipennis n. ?p. 



Q. Length .eg inch. Black, subopaquc, punctate and pubescent. Head on 

 vertex polished. Antenna; 12-jointed, long, black, scape rufous at base. Legs rufous. 

 Abdomen longer than thoi-ax and head eomlnned narrowed at base, first and second 

 segments striate. Melhathorax spined. Wings dark fuscous, veins black. 



Hab. — Florida. 



61 5. Prosacantha minutissima n. sp. 



O. Length .03 inch. Entirely black', polished. Legs red, femora pale at base. 

 Abdomen slightly longer than the head and thorax combined. Metathorax spined. 

 Wings sub-hyaline, the hind margins ot anterior wings with long cilia. 



Hab. — Florida. 



XXXV. TRISACANTHA n. g. 



This genus is easily distinguished from Prvsacaniha to wliich it is 

 most closely allied by having three spines on the metathorax, and its 

 polished, alutaceous surface. 



(^■■•2 I. Trisacantha americana n. sp. 



,. Length .10 inch. Black, smooth, polished. Antennae 12-jointed, filiform, 

 lunger than body, pedicel annular, following jomlslong, cylindrical, the fourth joint 

 shoi'ter than filth, other joints longer. Mesothorax without grooves. Scutellum 

 hmate, convex. Metathorax with a large central spine, and and two shorter lateral 

 ones. Legs red. Wings fusco-hyaline, veins as in typical Vrosacantlnrhwi with a 

 veinlet projecting forward from tip of stigmal vein. 

 Hab. — Florida. 

 Entomologica Amkeican.\. Vol. hi. 18 SEi'TiMciiit 1H87. 



