68 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiu. 



6. Metathoracic angles acutely spincd or toothed 7 



Metathoraeic angles rounded, not toothed (461 ) Diahorvs F(")rster. 



7. Scutellum deeply and l)roadly excavated; petiolar area very large, wider than 



long; second dorsal abdominal segment with the oblique grooves Ijroad 



rugose (462 ) Excavarus Davis. 



Scutellum narrow oval; petiolar area rectangular; second dorsal abdominal 

 segment with the oblique grooves feeble, scarcely indicated. 



(463) Auderis Davis. 



8. First abdominal segment ear-like widened 9 



First abdominal segment not ear-like widened (464) Aneqphysis Forster. 



9. Second abdominal segment at apex twice as wide as the first at apex. 



(465) Exysfon Schiodte. 



Second abdominal segment at apex hardly one and a half times as wide as the 



first at ai^ex (466) Actenonyx Forster. 



Tribe III. CTENOPELMINI. 



1855. TrypJiunides lioiaalopl Holmgren (part), Svensk. Vet.-Akad. Handl., I, 



p. 98. 

 1868. CtenojH'lmoidcC, Family 34, Verli. d. naturh. Ver. pr. Rheinl., XXV, pji. 145 



and 195. 

 1894. Ctenopehnini, Tribe III, Ashmead, Proc. Ent. Soc. Wash., Ill, p. 277. 

 1900. Ctenopelmini, Tribe III, Ashmead, Smith's Insects of New Jersey, p. 577. 



This tribe is exceedingly closel}' allied to the Mesolejptini^ the only 

 character discoverable, that may lie depended upon to separate it, 

 being the. pectinate, not simple, claws. It comprises genera with both 

 petiolate and sessile abdomen and thus affords a transition group 

 between the tribes Jlesolejjtinl and the Ti'upliomn'i. 



Seventeen genera have been recognized, separable as follows: 



TABLE OF GENERA. 



Abdomen not distinctly petiolate, sessile or subsessile 7 



Abdomen distinctly petiolate. 



Claws with close, long teeth 2 



Claws with s/iorf, distant teeth 4 



2. Clypeus distinctly separated, the apex strongly impressed 3 



Clypeus )U)/ distinctly separated, the apex not impressed.. (467) Rhorus Forster. 



3. Front wings vnUtout an areolet (468) Lahrodonus Forster. 



Front wings mith an areolet (469) Ctenopclma Holmgren. 



4. First abdominal segment only slightly widened l)ehind the spiracles, the fol- 



lowing segments not as long as wide 5 



First abdominal segment strongly widened behind the spiracles, the following 

 segments as long as wide. 

 Claws rather stout, strongly pectinate; ovipositor straight; clypeus separated 



from the face by a deep furrow (470) Oethophorus Forster. 



Claws with a distinct tooth below the apex; clypeus feebly separated. 



(471) Si/»ip}u'rta Forster. 



5. Median nervnre in hind wings distinct entire 6 



Median nervure in liind wings obliterated toward base.. (472) PIirndu>t Forster. 



6. Metanotum not regularly areolated, with only a poorly defined petiolar area; 



ocelli wider from each other tlian to the eye margin. 



(473) Eczetesis Forster. 



J 



