4 Rev. T. A. Marshall's Monograph of 



Chienon affinis, Curt., B. E., 289. 



Chorion nigricans, Westw., Loud. Mag. 1835, p. 177, pi. 



xvi, ff. g, h. 

 Alysia Olivierii, Gu6r., Mem. Soc, Agric. 1842, p. 26, pL 



iv, fif. 1, 2. 



5 Black, pubescent. Palpi and 4 anterior legs testaceous or 

 ferruginous, sometimes more or less blackened ; abdomen entirely 

 black, or at most slightly reddish at the base of the 2nd segment- 

 Head short for the genus, subciibic, transverse, sloping and emarginate 

 behind ; front slightly impressed ; mandibles rufescent ; labial palpi 

 short, attenuated at the tips. Antennae more slender than in other 

 females of the genus, as long as the body, rufescent at the base, 35- 

 40-jointed. Mesothoracic furrows converging to a foveola before the 

 scutellum, from which emanates a short medial channel 

 between two furrows ; metathorax coarsely punctate, rugose. 

 Wings hyaline with a dusky tinge; squamulae fuscous, nervures and 

 stigma dark fuscous, the latter broader than usual, like the radial 

 areolet, which is lanceolate, forming almost a half-oval. Fore legs 

 testaceous, with the coxse and base of the trochanters black ; femora 

 streaked with blackish above ; 4 posterior legs black, the tibiae and 

 tarsi somewhat piceous ; tips of the trochanters and base of the tibite 

 rufescent. Abdomen compressed towards the apex only ; 1st segment 

 coarsely punctate, shorter than in the other species, hardly 

 emarginate at the extremity. Terebra very short, or concealed. ,^ 

 Antennas entirely black, longer than the body, 44-47-jointed ; 

 abdomen longer than the head and thorax, depressed, spathuliform. 

 Length, Ij-Si lines ; exp. 2-4 lines. 



This is the commonest species, occurring everywhere in 

 cornfields and hedges. Goureau has reared it from the 

 dipterous Chlorops Ixta, Meig., C. herpmi, Giier., C. lineata, 

 Meig. etc., and Westwood found it in spoiled ears of barley, 

 which had been infested by some other of the 60 or 70 

 known species of Chlorops. Curtis, in the works above 

 referred to, may be consulted for additional information. 



4. Co&linius procerus, Haliday. 



Alysia (C.) procera, Hal., lib. cit., 23, $ . 



G. procerus. Marsh., lib. cit., p. 519, $ . 



C. ruficollis, H. Sch. Fortsetz. v. Panzer, 154. 22. $ . 



$ Black, with rufous prothorax. Similar to the following species, 

 but larger. Palpi testaceous ; mandibles rufescent. Antenna? 



