British Braconidce. 246 



I have not seen the ? : the undescribed ^ differs in 

 some respects, as follows : — 



$ . Black ; palpi, lateral margins of segments 1 — 2 broadly, 

 and belly at the base, j^ellowisli ; legs as in the ? , but the hind 

 pair are not darker. Antennae entirely black, much longer than 

 the body. Moderately shining ; head, mesothorax, and scutellum 

 thickly punctulate. Segment 1 attenuated from the base to the 

 apex, narrowly truncated, about 3 times as long as its medial 

 breadth, aciculated ; 2 as long as 3, with two longitudinal im- 

 pressed lines enclosing an aciculated space, and an oblique 

 impression near each anterior angle, within the yellow margin ; 

 the rest smooth. Hind coxae elongate, incrassated, thickly punctu- 

 late, hairy. Spurs of hind tibiae straight, shorter than \ the meta- 

 tarsus. $ 5 . Length, If ; wings, 4 lin. 



Described from three males. Their abdomen differs 

 structurally from that of the ? in about the same degree 

 as in the case of posticus, Nees. M. calceatus, Hal., is 

 not a synonym of this siDecies, as given by Keinhard, 

 but of puhescens, Eatz. The two sjiecies are closely 

 allied, but in mar(jinatusi\\e metathorax is longitudinally 

 carinated ; in calceatus, canaliculated. The resemblance 

 of the ^ marginatus to Apanteles vitripennis, Hal., is 

 very striking. The structure of the 1st segment is the 

 same in both, and they are only separated by the areolet, 

 the metathoracic carina, and the 2d segment, of margi- 

 natus. In fact, the Microgasters of this section are 

 hardly distinct from Ajmnteles. The difference between 

 them is reduced to the areolet, and further attenuated 

 by the fact that many Microgasters have this areolet 

 open on the outer side, while in Apanteles it is just as 

 often well defined on the two inner. 



One S was bred by Bignell from Larentia viridaria, 

 Fab., May 28th. The cocoon preserved with it probably 

 belongs to another insect, being dusky brown, and woolly. 

 Another S was taken by Bignell at Bickleigh, Devon ; 

 and the third by me near Teignmouth. 



6. Microgaster calceatus, Hal. 



Microgaster calceatus, Hal., Ent. Mag., ii., 241, 5 . 

 M. pubescens, Eatz., Icbn. d. Forst., i., 67, c? ; ii., 



pi. ii., f. 13 (wing) ; Euthe, Berl. ent. Zeit., 1860, 



p. 156, ? . 

 Black ; palpi flavcsceut with the apex duskj' ; lateral margins of 

 segment 1, and 2 partly, belly at the base, and legs, testaceous ; 



