126 EXTOMOLOGICAL NEWS. [April, 'l8 



er arm, the true lateral carina, runs disto-lateracl toward the 

 hhid coxa and well mesad of the spiracle ; it has a distinct, 

 smooth sulcus along its lateral side. Abdomen sessile, flat 

 above, its second segment occupying slightl}' less than half 

 the surface, its caudal margin straight, the other segments 

 short except 7. 



Marginal vein a little longer than the submarginal, about 

 thrice the length of the well developed stigmal, the latter some- 

 what shorter than the postmarginal. Tibial spurs of hind 

 legs not enlarged, distinct. 



Genotype : Miotropsis nigricans Howard. 



1. Grotiiisomyia nigricans (Howard). 



$ . Length, 1. 15 mm. Dark metallic blue, the wings hyaline, the vena- 

 tion pale, the antennae, tegulae and legs, golden brown except the hind 

 coxae. Mandibles white, at apex narrowly reddish, broadly dusky at 

 base. Head and thorax scaly punctate (that is scaly but the lines 

 raised), the propodeum and the abdomen (except segment 2 entirely), 

 scaly. Hind coxae above sculptured like the scutum. Bulla quadrate, 

 dusky. Scape cylindrical, moderately long. Pedicel a little longer than 

 wide, small. Funicle joints all distinctly wider than long, the distal 

 two larger than the proximal two, the club about equally divided, the 

 second joint smaller, i much wider than long. Scutellum with four 

 bristles. 



One female reared from larva of Eudamus proteus, St. 

 \'incent. British West Indies (F. Watts). United States 

 National ]\Iuseum. the female on a tag, the head, a hind tibia 

 and a fore wing on a slide. 



2. Grotiiisomyia flavicornis Girault, Psyche, xxiv, p. 95, 1917. 



9 . The same but the mandibles onlj' 7-dentate, the pedicel is in- 

 fuscated, the propodeum and postscutellum glabrous not scaly. Funicle 

 I quadrate. Otherwise the same. 



Two females reared from a pyralid leaf-m.iner on oak, 

 August 4. 1879. \\'ashington, D. C. 



Secundeisenia (Eiseniella) mexicana (Ashmead). 



The postmarginal vein is distinct but very much shorter than the 

 stigmal. Otherwise the species resembles a Blastophafia. Marginal 

 vein somewhat shorter than the long stigmal. Antennae ii-jointed, 

 the first funicle joint with a process. 



Tvpc in the U. S. National Museum examined. 



