52 PROCEEDINGS ENTOMOLOGICAL SOCIETY OF WASHINGTON. 



metathorax with a high med-'an longitudinal keel, angulate at apex; 

 from slightly behind the middle of the keel and one on each side run 

 forward to base of metathorax a pair of diverging keels ; metathorax 

 with many stout yellow hairs ; wings deeply infuscated ; hind femora 

 hardly twice as long as broad, with a large tooth below and from this 

 to apex with saw-like teeth ; hind coxae punctured all over ; abdomen 

 closely coarsely punctured, in places golden green. 



Male: Very similar to the female, but the median keel on meta- 

 thorax rounded behind instead of angulated. Length 9 mm. 



Southern Florida; Robertson, 12821, 12891, 12892; 1 fe- 

 male, 2 males. 



Type No. 12581, U. S. National Museum. 



LARIOPHAGUS, new genus. 



Type L. texanus Crawford. 



Dorsum flattened; antennae 13-jointed, slightly clavate, with two 

 ring joints, pedical longer than first joint of funicle ; the mandibles 

 distinctly four-toothed ; the antennae inserted on the middle of the face ; 

 the occipital foraminal depression immarginate ; the mesonotum trans- 

 verse; the parapsidal furrows only very slightly indicated anteriorly; 

 the metathorax with a very short neck, with a median longitudinal 

 carina, and a transverse one near base ; the marginal vein distinctly 

 longer than the postmarginal, pastmarginal distinctly longer than the 

 stigmal vein. 



In Doctor Ashmead's classification of the Chalcid flies, this 

 genus will run in the tribe Pteromalini to no. 26, where it differs 

 from the two genera given by having the lateral folds of the 

 metathorax complete and from Diglochis in having the abdomen 

 elongate. The other genus given under this alternate, namely, 

 Hypopteromalus, does not, according to Doctor Ashmead's 

 own classification, belong to this tribe, since it has the abdomen 

 distinctly petiolate and not sessile. 



Lariophagus texanus, new species. 



Female: Length about 2 mm.; head and thorax black, sometimes 

 with a slight metallic tinge, especially on face beneath, the abodmen 

 having various shades of green, coppery and purple ; insect very robust ; 

 head slightly broader than the thorax; antennae black, the scape testa- 

 ceous ; head and thorax with fine thimble-like punctures, those above 

 insertion of antennae coarser; metathorax finely reticulate, black, with 

 a green tinge ; the transverse carinae running laterally to the apices of 

 the lateral folds; metathoracic spiracles, small, oval; wings hyaline; 

 legs dark ; apices of femora, tibiae, and tarsi reddish testaceous ; abdo- 

 men smooth and shiny ; the apical segments very finely reticulate. 

 Male: Similar in size and structure to the female. 



Type locality : Victoria, Tex. Parasitic on Laria (Bruchus) 

 prosopis. 



Also, Victoria, Tex., bred from stems of Leucosyris spinosus. 



Type No. 12583, U. S. National Museum. 



