456 THE GBUISE OF THE ' GUBAfJOA.' 



HYMENOPTERA ACULEATA, 



Family Thynsidje. Genus Thynnus, Fabr. 



PLATE XLIII. Fig. 2. 

 THYNNU8 BBENCHLEYI, Smith. 



Length, 14 lines. Black, with the head and prothorax yellow. 

 Head smooth and shining, the antennte black as well as the tips of 

 the mandibles. Thorax : the prothorax smooth and shining, its 

 anterior margin elevated. The meso- and metathorax black 

 above, both smooth and shining ; two small ferruginous angulated 

 spots in the middle of the anterior margin of the mesothorax 

 which has a few scattered delicate punctures; the scutellum finely, 

 but not closely punctured, and having in the middle, posteriorly, 

 a pointed tubercle ; the metathorax with a small pale spot on each 

 side behind the insertion of the posterior wings; the wings 

 hyaline, dark brown at their base ; the anterior pair with a paler 

 cloud at their apes. The mesothorax ferruginous beneath ; the ^ 

 anterior legs ferruginous, with the coxae and the femora beneath 

 yellow ; the intermediate and posterior legs ferruginous ; their 

 coxae with fuscous stains beneath ; the posterior tibiffi above, 

 and their tarsi, black. Abdomen cylindrical, shining and finely 

 punctm'ed, with the base abruptly truncate ; a minute indistinct 

 ferruginous spot at the base of the second segment in the middle, 

 and a similar spot in the middle of the fom-th, fifth, and sixth 

 segments ; there is also a minute lateral ferruginous line, indis- 

 tinctly visible, on the first four segments ; the seventh segment 



