( : ;]-2 NEW SPECIES OF BRACoXID.E. 



Described from one male specimen received from Prof. A. J. Cook. 

 This insect shows strong affinities with Macrocentrus, but as the mau- 

 dibles form apparently a semicircular opening - , it has not been placed 

 in that group, and is doubtfully referred to the above genus. 



HETEROGAMUS Wesmacl. 



To this genus belong Rh. delicatus Cr., Rh. J'umipennis Cr., and Rh. 

 texanus Cr. 



KIIOGAS Nees. 

 Rhogas harrisinae n. sp. 



Male. — Length, 51""". Pale honey-yellow; eyes large, prominent, 

 black, slightly emarginated opposite base of antenna 1 ; antennae long, 

 very slender, Li-jointed, the flagellar joints after the 1st a little more 

 than thrice as long as wide; metathorax delicately rugose; abdomen 

 ovate, sessile, the 1st, 2d, and basal portion of the 3d segments longi- 

 tudinally aciculated and without a central longitudinal carina, the fol- 

 lowing segments smoother, delicately punctate; wings hyaline, strongly 

 iridescent, the costre and stigma yellow, the median, submedian, and 

 basal veins and the veins surrounding the 1st and 2d discoidal cells, 

 and the 1st submarginal cell, black or very dark brown, piceous; the 

 2d submarginal cell is very long, trapezoidal, slightly narrowed at apex. 



Habitat. — Jacksonville, Florida. 



Described from one specimen sent to the Department by the writer, 

 who reared it in October, 1881, from the larva of Harrisina americana 

 Harris, taken on grape-vine. 



It appears closely allied to Rh. melleus Cr., but is at once separated 

 from it and from other species by the absence of the longitudinal cen- 

 tral carina on basal abdominal segment. 



Rhogas pubescens n. sp. 



Male. — Length, 9 mm . Similar in stature to Rh. atricornis Cr. Head 

 and thorax black, rugose, covered with a rather dense white pubescence, 

 denser on face, pleura, and metathorax; palpi, abdomen, and legs ru- 

 fous, pubescent: antennas black, 68-jointed, the joints of the antennae 

 being about as long as wide; metathorax rugose, with only a slight I 

 keel at base medially; the posterior femora are slightly swollen, about 

 as in Rh. mandibulars Ct.; the abdomen is rugose, the rugosities on the 

 terminal segments being finer and the surface shining; there is a dis- 

 tinct medial longitudinal carina on 1st and 2d segments and at the 

 base of 3d. Wings dusky hyaline; the costal and stigma black, the 

 veins brown ; the 2d submarginal cell is quadrate, a little longer than 

 high. 



Habitat. — Wisconsin. 



Described from one specimen. 



The number of antennal joints, more densely pubescent body and 

 color, will readily separate this species from any other in our fauna. 



