253 



II. Sixth antennal joint as long, or very nearly as long, as the first. 

 A. Sixth antennal joint cylindrical, many times longer than hroad. 



1. A minute scutellnm exposed. 



Neolobophora. Head and thorax depressed ; abdomen 

 unusually tumid, subcylindrical, the sides full ; an- 

 tenua3 more than half as long as the body, with less 

 than twelve joints, mostly long and cylindrical; teg- 

 mina present; wings absent ; first tarsal joint but lit- 

 tle longer than the third, the second minute but 

 produced below the third and bilobate; third joint 

 without pad ; second and third abdominal segments 

 with distinct lateral plications; forceps long, slender, 

 simple, nearly or quite attingent, unarmed, nearly or 

 quite straight, and longer in the male than in the 

 female. 

 1. volsella Scudd. Head reddish; rest of body black; 

 mouth-parts and antennse blackish, tinged with red, 

 the latter growing paler toward tip ; tegmina nearly 

 square ; legs luteous, with the apical half of the femora 

 black ; forceps reddish ( ? ), or black, reddish at base 

 (^), with a slight tooth in the middle of inner edge 

 in male. Body 12°^™; forceps, ^ 10.5™°^, 5 5=™. 

 Mexico. 



2. No scutellum exposed between base of closed tegmina. 



«. Abdomen greatly exj)andedin middle ; penultimate and ante- 

 penultimate dorsal segments in male very short. 

 Ancisteogaster. Body depressed, but abdoiuen somewhat 

 tumid as well as broadly expanded in the middle ; 

 antenna3 nearly as long as the body, 12-jointed, the 

 joints unusually long ; tegmina and wings present ; 

 legs long and slender, first and last tarsal joint 

 nearly of the same length, the second short but pro- 

 duced far below the third and bilobed ; third joint 

 without pad; second and third abdominal joints with 

 lateral plications, and fourth and fifth joints with 

 extreme lateral posterior prolongations ; forceps not 

 so long as abdomen, subcylindrical, either straight, 

 attingent, simple ( 9 ), or strongly bowed, the tip ex- 

 panded and toothed, the extreme base with an inner 

 tooth ( <? ). 



J Sides of fourth and fifth abdominal segments slightly 

 and sharply produced posteriorly 1. gulosa. 

 , Sides ofthird, fourth, and fifth abdominal segments greatly 

 I and sharply produced posteriorly 2. splnax. 



1. gulosa Scudd. Very dark brown ; palpi and antennae 

 pale brown; wings pale dull luteous; posterior pro- 

 longations of fourth and fifth segments inconspicu- 

 ous; legs dull luteous, more or less infnscated ; for- 

 ceps of the male with the tip depressed laminate, 

 either extren)ity of it produced to a fine point, the 

 middle of inner border smooth. Body 11™"»; forceps, 

 <? 4""", 9 3""". Mexico. 



