65. 

 HYLOTOMA STEPHENSII. 



Order Hymenoptera. Fam. Tenthredinidse Lat., Leach. 

 Type of the Genus Tenthredo coerulescens Fab. 

 Hylotoma Fab., Lat., Leach. Tenthredo Linn. Cryptus Jur. 



^w<e«n«? inserted near the centre of the face, divaricating, curved, 

 3-iointed, 2 first joints small, 3rd very long, filiform, and pilose 

 in the males, the hairs arising at right angles on one side (f. 1) : 

 not so long in the females, somewhat clavate, and scarcely 

 hairy (la). 



Labrum exserted, transverse, hairy, sides convex, anterior mar- 

 gin nearly straight (2). 



Mandibles somewhat robust, arcuate, with an obtuse tooth near 

 the middle of the internal edge, less evident in one than in the 

 other mandible, ciliated externally (3). 



Maxilla: small, internal lobe nearly obsolete, external oval, hairy : 

 Palpi hairy, 6-jointed, 2 first joints small, 3 following of nearly 

 equal length, the 1 st being the most robust, terminal joint slender 

 and the longest (4). 



Mentum (5 a) somewhat quadrate, dilated into angles on each 



side where the Palpi arise, which are 4-jointed, 1 st joint small, 



2nd and 3rd of nearly equal size, 4th slender, elongate, conic 



(b): Lip tripartite, of nearly equal portions (c). 



Head with a tubercle between the antennce. Ocelli 3. Abdomen sessile , 



rather short and thick. Oviduct not exserted, composed of 2 serrated 



lamella:. Superior wings ivith one marginal cell, emitting a nerve 



from the apex, and 4 perfect submarginal cells. Tibiae simple, the 4 



posterior, having a spine on the internal side, below the middle (8 a 



hind leg). 



Stephensii Leach Zool. Mis. v. 3. p. 123. n. 6. 



Head and thorax violaceous-black, the latter inclining to rufous 

 in parts, .\bdomen yellowish-ochraceous, palest at the base, 

 pectus ferruginous, violaceous-black in the middle. Wings iri- 

 descent, stained pale yellowish fuscous ; costa, stigma, and nerves 

 piceous. Legs brown, pubescent 3 4 posterior thighs yellow, 

 except at their apex. Tarsi and antennae nearly black. 



In the Cabinets of Mr. Stephens and the Author. 



