720. 

 BETHYLUS FULVICORNIS. 



Order Hymenoptera. Fam. Proctotrupidae. 



Type of the Genus, Bethylus punctatus Lat. 

 Bethylus Lat., Fab., Nees, Curt. — Ceraphron Panz. — Omalus Jur. 

 AnteriTKe straight, slightly tapering, not remote, inserted at the 

 base of the clypeus, shorter than the thorax, pubescent and a 

 little pilose, 12-jointed, basal joint very stout, elongate-ovate, 

 2nd oblong, slenderer than the following which are compressed, 

 a little thickened to the middle and tapering again to the apex 



Labrum a semicircular membrane, inserted under the clypeus, 

 with a long horny lobe in the middle and a seta at the apex (2). 

 Mandibles exserted, meeting, rather large and curved, the apex 

 semicylindric and truncated, with 3 or 4 small teeth (3). 

 Maxilla short and broad, terminated by an oblique oval ciliated 

 lobe. Palpi not long, filiform and 5 -jointed, basal joint some- 

 what cup-shaped, 2nd the stoutest, oblong, 3rd and 4th the same 

 length, a little clavate, 5th a trifle longer, elliptic- conic (4). 

 Mentum corset-shaped, the basal angles produced, the centre 

 convex, the anterior angles excised to receive the Palpi, which 

 are short and biarticulate, basal joint cup-shaped, 2nd large 

 clavate and pilose at the apex. Lip almost as large as the 

 mentum, hollow and fleshy, the sides conniving (5). 

 Head ovate or orbicular -quadrate, depressed but convex : eyes lateral, 

 ovate : ocelli 3, placed in triangle at the base of the head. Thorax 

 rather long and narrow : prothorax short, narrowed before : scutel 

 conical trigonate : metathorax ovate, rugose at the base. Abdomen 

 not longer than the thorax but broader, ovate- conic, the base with a 

 short broad petiole, 2nd segment the largest, the apex furnished with 

 a fleshy oviduct. Wings, superior with a costal nervure divided at 

 the middle and forming a short narrow cell, closed by a small stigma, 

 which emits a curved nervure not touching the costa, 2 long basal 

 cells, lower one the shortest, with a pale line running to the extre- 

 mity and an oblique indented one at its base : inferior with only 2 

 short basal nervures. Legs, hinder a little the longest: thighs 

 stoutish, compressed : tibiae narrowed at the base, with 1 spine at 

 the apex: tarsi as long as the tibice, 5 -jointed, basal joint long, 3 

 following very short in the anterior, 5th short and stout; claws 

 short, stout and hooked at the base : pulvilli large. 



FuLvicoRNis Curt. Guide, Gen. 579. 



In the Author's Cabinet. 



I MUST confess that after great pains I am unable to satisfy 

 myself as to the affinities of Bethylus, but I believe it to be 

 most nearly allied to Ceraphron, fol. 249. Latreille places it 

 amongst his Proctotrupii in the Gen. Crust., and says the an- 

 tennas are 1 S-jointed in both sexes, that the maxillary palpi 

 are 6-jointed, and the labial 3- or 4-jointed ; in his Fam. Nat. 



