276 ENTOMOLOGICAL SOCIETY 



it represents an ancient type of the family Ichneumonida3, and 

 probably the phylum from whence originated part of the Braconiclae 

 the Alsyiinae. On account of its venation, however, it having 

 a distinct areolet, two recurrent nervures, and its abdominal char 

 acters, I believe it should be placed as a distinct subfamily in the 

 Ichneumonidae. 



This new genus may be thus characterized : 



Lysiognatha genus nov. 



Head, viewed from above, subquadrate, deeply emarginate posteriorly, full 

 and broad behind the eyes, the vertex with a median sulcus extending to 

 front ocellus; viewed from in front nearly twice as wide as long, the face 

 therefore short, the clypeus extending from eye to eye and visible as a 

 narrow transverse ridge; ocelli 3, rather close together in a triangle far 

 away from the eye margin; eyes oblong oval extending to base of man 

 dibles, the malar space entirely wanting; mandibles widely separated, 

 attached to the side of the head as in Alysia, oblong, only slightly con 

 tracted at the middle, the apex being deeply emarginate and forming 

 two nearly equal-sized teeth; maxillary palpi 5 -jointed; labial palpi 

 3-jointed; antennae inserted a little below the middle of the face, in 9 

 very slightly thickened toward apex, 22-jointed, the last joint, however, 

 apparently composed of 3 connate joints ; in ^ tapering towards tips, 25- 

 jointed. Thorax ovate, the prothorax narrowed, triangular ; mesonotum not 

 longer than wide, without parapsidal furrows, the mesopleura convex, not 

 impressed or foveated ; scutellum subtriangular, with a deep furrow 

 across the base ; metanotum with two delicate median carinae, divergent 

 posteriorly, the lateral longitudinal carinse subobsolete, the spiracles 

 small rounded, placed toward the lateral middle; anterior wings as in 

 Ptmpla, with an oblique, subrhomboidal areolet, the second recurrent 

 nervure entering the areolet near its apex, the median and submedian 

 cells equal, the discoidal nervure angulate a little before the middle, legs 

 normal, the tibial spurs i, 2, 2, short, not strong. Abdomen in 9 oblong- 

 oval, sessile, subcompressed at apex and ending in a long ovipositor; 

 first segment the longest, feebly bicarinate toward base, the spiracles very 

 small, rounded, placed a little before the middle; the other segments 

 smooth; the second segment is half as long as the first, the following 

 gradually shortening. In the <^ the abdomen is a more slender, with the 

 first, second, third, and fourth segments with a ventral fold. 



Lysiognatha comstockii sp. n. 



9- Length 28 to 3 mm. ; ovipositor longer than the abdomen. Red 

 dish-brown, smooth and polished; anterior orbits broadly, face below an- 

 tennse, clypeus, mandibles, except teeth, mouth-parts, antennae toward 

 base, collar, tegulae, legs and abdomen toward base, yellowish-white ; 

 ocelli, eyes, and tips of mandibular teeth, black. Antennas 22-jointed, ex 

 tending to base of abdomen, brownish toward apex and pubescent. Wings 



