MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 183 



Front wiii;;s imbescfiit, i-iliatod, tlir cilia on iiind niarfjfin very lonjf, 

 th»^ maijriiial vein linear, about five times as long' as the short stignial, 

 the postniarg'inal wanting. 



AluloiniMi longoviil, depressed, s]>arsely pilose, the first segment 

 longer than wide, tinted, the third t\\v, largest; the tirst three segments 

 are hnigitiidinally striated. 



Legs rather long, slender, i)ilose, the tibial spurs nn'nute, the tarsi 

 slender but 8pinuh»se. 



This genus, known only in the male sex, is distinguished from Prom- 

 cantha by the 3-spined postseutellum, and in having distinct meso- 

 notal furrows ; from Xt-nomeniti, which also has mesonotal furrows, it 

 is separated by the p(Kstscutellum and the filiform antenuie. 



It may be the opi)osite sex of Ptntacntithay agreeing witii it in its 

 postscutellar character, but the mexonotnin hdx tiro distinct fiirnurs, and 

 as 1 know of no genus in the Proctotrijpidw having the mesonotum 

 grooved in one sex and plain in the opposite, 1 believe it to be dis- 

 tinct. This character, used in the table of the males, is therefore 

 repeated in the generic table of the females. 

 ■ Only two spe(;ies are kuown to me, whiirh may be separate*] as follows: 



Bliiek; It-gs rufous, coxic black. 



Scutelhiiu smooth, jiolislit'd T. amkuicana AhIiiu. 



Scntelluiu rugose T. kuoosa, sp. uov. 



Trissacaiitha americana Asbni. 



(PI. viii. Fig. 2, c?.) 



Ent. Am., iii, p. 117; Cress. Syn. Hym., i>. 813. 



$. Length, 2.5""". INdished black, pubescent; head and occiput 

 with some strite; mandibles i)iceous; legs rufous, the coxie black. 

 Antemue IL'-Jointcd, filiform, black, longer than the body, the scape 

 not much longer than the tirst flagellar joint, the pedicel annular, the 

 flagellar joints all long, cylindrical, the first about five times as long 

 as thick, the se<'ond shorter, the third angulated at the middle and 

 slightly excised at base. Mesonotum with two distinct furrows; scu- 

 tellum semicircular, smooth, poli.shed; po.stscutellum with three erect 

 spiue.s, the middle the huigest. Abdomen longer than the head and 

 thorax together, longitudinally striate*]. Wings fusco-hyaline, pu- 

 bescent. 



Habitat. — Florida, District of Colund)ia and Virginia. 



Type in Coll. Ashmead; specimens in National Museum. 



This species was originally described from a spe<imen taken by 

 myself in Florida, but I have since seen specimens taken in Virginia 

 and District of Columbia. 



: ^ - Trissacantha rugosa, sp. uov. . ' ■ 



$. Length, 2..")"'"'. Black, shiiang, ])ubes<'«'nt; head above, collar 

 an<l scufellum rugo.so-ptnictate, the mesonotum smoother, the fa^-e near 



