Order Hymenoptera. Fam. Ichneumonidae. 

 Type of the Genus Agriotypus armatus Walk. 

 Agriotypus Walk. — Curt. Guide, Gen. 503^ (') 



Antennce inserted towards the middle of the face, remote, filiform, 

 very hairy, rather long in the male and composed of 31 joints, 

 basal joint the stoutest, ovate, 2nd short subovate, 3rd the 

 longest, 4th not longer than the 1st, remainder decreasing in 

 length to the apex, apical joints short and oblong, the terminal 

 one conical (1, portions of the base and apex). Short in the 

 female and composed of 2-1 joints, 



Labrum nearly concealed by the clypeus, somewhat orbicular, 

 anterior margin thickened, producing a few long bristles; tongue- 

 shaped, pubescent, with a lobe inserted beneath and extending 

 considerably beyond the labrum (2). 



Mandibles exserted, meeting at the apex and crossing, broadest 

 at the base, curved, with an obtuse tooth below the apex which 

 is acute, ciliated externally (3). 



MaxillcB forming a large rounded lobe, with another external one 

 of equal size and ciliated at the apex. Palpi very long, pubes- 

 cent pilose and 5-jointed, 2nd joint the stoutest, 3rd the longest, 

 4th and 5th rather slender, the latter the shortest (4). 

 Mentum attenuated to the base, truncated before. Falpi attached 

 to the anterior angles of the mentum, rather long, pubescent, 

 pilose and 4-jointed ; 3 first joints short, nearly of equal length, 

 subclavace, 2nd and 3rd slightly dilated, 4th long slender and 

 conical at the apex. Lip large hollow and very pubescent (5). 

 Head short transverse, face somewhat obovate. Eyes rather swall but 

 prominent. Ocelli 3 in triangle (1 ^, front view of head). Thorax 

 narrow: scutellum elongate-trigonate, the sides rejtexed, terminated 

 by a porrected spine: postscutellum with 6 longitudinal elevated 

 lines. Abdomen short and oval, attached by a long stout arched 

 petiole, broader than the thorax in the male, and much more so in 

 the female, the basal joint very large in the female, with 2 indistitict 

 transverse sutures, the apex terminated by two small appendages in 

 the male: ovipositor short and exserted from beneath. Wings, su- 

 perior with an oval stigma and a small triangular marginal cell, 

 areolet none (9) ; inferior with distinct nervures. Legs all long and 

 slender, hinder the longest. Tibiae all long, spurred at the apex. 

 Tarsi long, basal joint very long, 4th the shortest, apical joint as 

 long as the 2nd. Claws and Pulvilli rather large : (8, apex of tibia 

 and the tarsus). 



Armatus Walkers MSS. 



In the Cabinets of Mr. Walker and the Author, 



(') The situation of the genus is thus indicated that it may be recorded in the 

 Guide ; and whenever it is reprinted, all new or additional genera will be inserted 

 in their proper places, with letters attached to the numbers, that those of the first 

 edition may not be disturbed. 



