118 PROCEEDINGS OF THE NATIONAL MUSEUM. 



not stout, conico-cylindrical; meso- and metastethia together much 

 longer than broad in both sexes, the latter narrowing rapidly behind, 

 so that the portion behind the lobes, more than twice as broad as long, 

 is scarcely more than half as broad as the metastethium ; interspace 

 between mesosternal lobes much longer than broad in both sexes and 

 much narrower than the lobes themselves, the nietasternal lobes more 

 (male) or less (female) approximate, the interspace in the female scarcely 

 so broad as, in the male much narrower than, the frontal costa. Teg- 

 mina abbreviate, overlapping, acuminate. Hind femora very long, the 

 inferior genicular lobe subpallid, uniform, the hind tibiae with eight to 

 twelve spines in the outer series. Sides of the first abdominal segment 

 with a distinct tympanum. Subgenital plate of male with no apical 

 tubercle, its lateral margins ampliate, basally rectangulate ; cerci lamel- 

 late, subpyriform, tapering strongly and unequally, the apex produced, 

 subacuminate and incurved. Abdomen of female regularly tapering, 

 the ovipositor normally exserted, the valves nearly straight with acute 

 but smooth costae. 



The genus is represented by a single species found in the western 

 Mississippi valley. When published by Brunner, no species was de- 

 scribed or even named, but the species here given is the one upon 

 which the genus was founded and is therefore the type. 



PARATYLOTROPIDIA BRUNNERI, new species. 



(Plate IX, figs. 4, 5.) 



Warm brownish ferruginous, approaching castaneous, inclining to 

 flavous below, marked with pale flavous. Head protuberant, flavous, 

 faintly and sparsely punctate with fuscous, above with an anteriorly 

 tapering, broad, ferrugineo-fuscous or olivaceo-fuscous band, the geuae 

 behind the eyes more or less distinctly infuscated ; vertex feebly tumid, 

 not elevated above the pronotum, the interspace between the eyes 

 exceptionally broad, being nearly four times as broad as the basal joint 

 of the antennae; fastigium very feebly declivent, plane or tumid, 

 scarcely expanding anteriorly, its lateral margins not in the least ele- 

 vated, well rounded, its anterior margin well rounded as seen from 

 above; frontal costa fading just before the clypeus, faintly enlarging 

 from above downward, above about (male) or fully (female) half as 

 wide as the interspace between the eyes, feebly sulcate at the ocellus, 

 coarsely and sparsely punctate throughout; eyes not very large nor 

 prominent, about as long as the iufraocular portion of the genae; anten- 

 nae luteo-testaceous, apically infuscated, in the female about two-thirds 

 as long as the hind femora. Prouotum elongate, compressed, subequal 

 but feebly enlarging backward on the upper portion of the anterior sec- 

 tion of the prozona, beyond it equal, the disk very broadly subtectate, 

 passing by abrupt angles, forming distinct and continuous feebly and 

 oppositely arcuate lateral carinae facing inward, into the vertical lateral 

 lobes, which above are very steeply and convexly declivent; whole 



