CTENOPLECTR A . — NOM ADA . 



463 



im punctate ; 5th segment lightly but closely punctured, opaque, 

 with a fuscous fimbria of pubescence on its apical margin ; e\n- 

 pygium covered with dense fuscous pubescence, the apex of the 

 triangular pygidial area produced, the base broadly carinate ; the 

 ventral segments cihated with fuscous hairs ; the legs smoky black 

 with stiff hairs or pubescence, the scopa somewhat dense, fuscous 

 black; wings hyaline, sometimes infuscate, nervures fuscous. 

 " Hub. The Shan hills, Upper Burma. $ . Length 9 mm." 



Genus NOMADA. 



Nomada, Scop. Ann. Hist. Nat. iv, p. 44 (1770). 



Type, JV. fabriciana, Linn. 

 Range. Both hemispheres. 



Head transverse, not as Mide as the thorax ; eyes compara- 

 tively large ; front broad, the inner orbits wide apart and slightly 

 arched outwards ; autenujB filiform, geniculate ; ocelli in a triancrje 



on the vertex ; clypeus slightly 

 porrect in all the Indian species; 

 labrum transverse, rounded an- 

 teriorly ; the tongue long and 

 acute ; labial palpi 4-joiuted, 

 basal joint about equal in length 

 to the apical three united ; max- 

 illary palpi 6-jointed, basal joint 

 short, subclavate, 2nd longest, 

 3rd slightly shorter than the 

 2nd, remainder decreasing in 

 length to the apical joint. 

 Thorax ovate ; fore wing w ith 

 the radial cell narrowed in its 

 apical half, the apex acute : 

 three cubital cells, the 1st equal 

 in length to the 2nd and 3rd 

 united, the latter both con- 

 stricted strongly towards the 

 radial cell by the curving to- 

 wards each other of the 2nd 

 and 3rd transverse cubital ner- 

 vures, the 2nd cell receives the 1st recurrent nervure about the 

 middle, the 3rd cell the 2nd recurrent nervure a little beyond the 

 middle ; legs stout, naked ; abdomen subclavate, more or less 

 narrowed towards the base, sometimes subpetiolate. 



Of the Indian species, Nomada lusca, tSmith, has been observed 

 by Mr. E. E. Green, of Pundaloya, Ceylon, parasitic in the nests 

 of Ilalidus ducalis, Bingh. Smith, in his Catalogue of British 

 Hymenoptera in the Coll. British Museum, has a most iuterestino- 

 account of the habits of the British species. '^ 



Fig. loO.—Xomada. 1, mandible; 



2, maxilla ; 3, labiiiiu. (Much 



enlarged.) 



