PARASITICA — ICHNKUMONID-'K. 39 



(exfoptiiig in the genus Phni'mlla of the Ophioninte) an<l therefore 

 there are two recurrent nervures, the first of which is received hy 

 the cubito-«liscoi»hil cell, which rarely receives both as in Ojihion, 

 Thifn'oihrn, X(>tt)tr<irhiiin\iu] Aroffn; the costal cell is absent by reason 

 of the conHuence of the costal and subcostal nervures (a) ; the stigma 

 (n) is usually well devehnHjd, sometimes very large, rarely subob- 

 solete. ' 



The head is generally transverse, scarcely wider than the thorax, 

 sometimes sulxjuadnite when the cheeks are inflated, rarely globose ; 

 the face is usually flat or feebly convex, sometimes prominently con- 

 vex as in OrtlioceitfniK, KrochiiK, etc., very rarely scutatiform as in 

 MHoj>luj<; cly|)eus depressed or convex, seldom nasutiform jis in 

 Gri/pocentriu<, often without line of separation from the face as is 

 frecjuently the case in the Ophioninoe ; the eyes are more or less 

 prominent and lateral, s<mietimes subemarginate within opi)osite the 

 insertion of the antennie ; ocelli generally small and arranged in a 

 curve or triangle, rarely large and prominent as in Ophion, Epbnecis, 

 etc. ; the antenna; seldom exceed the body in length, usually slender 

 and filiform, rarely dilated as in Jopjndinm and Euceros, or some of 

 the joints emarginate as in Ci/Uoceria ; they are never elbowed, the 

 basal joint mostly short, ovate or globose, and the second joint sjuall 

 and annular. 



The prothorax, or collar, is generally short and inconsj)icuous 

 whon viewed from above, but laterally extending to the teguhe ; 

 mesc thorax smooth or punctured, rarely transversely ridged as in 

 lihij><i'i, etc. ; scutellum usually flattened or convex, rarely j)yrami(lal 

 as in Tragus, or spined as in Baiichus, and often of a different color 

 from the ."est of the thorax ; metathorax generally areolated, rarely 

 bispinose iis in Hoptlsmemis, Hemlteh^, Mesostenus, etc. 



The legs are usually long and slender, the posterior femora seldom 

 toothed beneath as in Odontomerus, Prisfomervs and Elphosoma ; 

 sometimes the tibite are inflated or twisted as in Xylonomus and allied 

 genera. 



The abdomen is generally elongate-ovate, or cylindrical or subfu- 

 siform, pedunculate and often sessile, or compressed and sickle-shai)ed 

 as in the Ophioninae, and always attached to the a{)ex of the meta- 

 thorax ; the ovipositor varies nmch in length, often short, or not ex- 

 serted, or very long as in Rhymi and many of the Pimplinae, the 

 ventral valve rarely large, long and lanceolate as in Coleocentirus and 

 allied genera. 



