THE CANADIAN ENTOMOLOGIST. 131 



much narrower than head, smooth. Abdomen long, acuminate ovate, 

 nearly twice as long as head and thorax combined. Wings hyaline. 



Hab. — Florida. 



This species is placed in this genus only provisionally, as the non- 

 grooved thorax and shape of abdomen will probably exclude it from the 

 genus. 



LXIII. Trichacis, Foerster. 



97 (i). Trichacis brwmeipes, n. sp. 



Female. Length, .10 inch. A slender, elongate, polished, black 

 species. Antennae and legs pale yellowish-brown, flagellum and club rust- 

 brown. Mesothorax with two parallel grooves. Scutellum, which is 

 transversely convex, is well separated from thorax by a deep depression, 

 and has a thick tuft of grey pubescence at tip. Metapleurse densely 

 pubescent. Wings dusky hyaline. 



Hab. — Florida. 



LXIV. Hypocampsis, Foerster. 



98 (i). Hypocampsis Pluto., n. sp. 



Female. Length, .06 inch. This species is highly polished, including 

 antennae and legs, entirely black. Mesothorax with two grooves. Scu- 

 tellum rounded, highly convex. Abdomen with the lateral carina broad 

 and turned downwards. Wings hyaline. 



Hab. — Florida. 



LXV. Fo/ygnotiis, Foerster. 



99 (i). Polygnotus solidaginis, n. sp. 



Male and female. Length, .05 to .07 inch. Black polished. Antennae 

 dark reddish-brown, scape paler ; club, female, five-jointed ; male antennae 

 filiform. Legs dark red, femora black, tibiae obfuscated. Mesothorax 

 smooth, without grooves. Scutellum elevated, highly convex, more than 

 twice as broad as long, and separated, from mesothorax by a deep trans- 

 verse groove. Wings hyaline. 



Hab. — Florida. 



Described from numerous specimens reared from a Cecidomyious gall 

 (Cecidoniyia nehulosa Ashm. MSS.) From six to eight specimens were 

 reared from each fly ; they make parchment-like cocoons, placed side by 

 side, as illustrated by Prof Westwood on the genus Platygasic?-, " Introd. 

 to Study of Insects," vol. ii., f 78, No. 14. 



