INSECUTOR INSCITI^ MENSTRUUS . 113 



Anteniige inserted a little below the middle of the face. Clypeus 

 not produced, striate, its distal margin sinuate. Mandibles 

 4-dentate. Pronotum with an acute cephalic margin, linear (a 

 little longer laterad), as wide as the mesonotum, the latter 

 wider than long, constricted only at extreme cephalo-lateral 

 angle. Parapsidal furrows very short. S'cutellum large, sim- 

 ple, flat. Propodeum short (distinctly shorter than in Ptero- 

 malus), the neck a mere rim, the median carina absent, the 

 lateral distinct, the spiracle elliptical, with a fovea just distad 

 of it to represent the spiracular sulci (which are not present, 

 truly). Abdomen as in Pteromalus, as is the venation, but the 

 stigmal vein is not so long, the longer postmarginal not two- 

 thirds the length of the marginal. Pubescence inconspicuous, 

 quite normal. 



One female reared from the galls of Ctenodactylomyia wat- 

 soni on Coccolobis, May 6, 1916 (R. H. Van Zwalenburg). 



Habitat, Joyudd, Porto Rico. 



Type, Cat. No. 20485, U. S. Nat. Mus., the female on a tag, 

 the hind legs and a head on a slide. 



Eutelus ruskini, new species. 



Female. — Length, 1.50 mm. Similar to hetulce but the legs 

 dull yellow except the coxae and the caudal femur, the latter 

 darker and submetallic ; the clypeus is but slightly sinuate at 

 apex ; the median carina of the propodeum is distinct, the spir- 

 acle elliptical and larger ; the antennas are inserted on a line 

 with the ventral ends of the eyes. 



From three females on tags in the United States National 

 Museum, Custer County, Colorado (T. D. A. Cockerell). 



Types, Cat. No. 20653, U. S. Nat. Mus., the above specimens 

 plus a slide bearing heads and a caudal leg. 



Coelopisthia rotundiventris, new species. 



Female. — Length, l.GO mm. Dififers from the typical form 

 in that the antennae are situated on a level with the ventral ends 

 of the eyes or slightly above. Clypeus somewhat produced, its 

 apical margin slightly concaved, a small sinus separating it lat- 

 erad from the rest of the head. Mandibles 3- and 4-dentate. 



