MONOGRAPH OV THE NORTH AMERICAN PROCTOTRYPID.E. 51- 

 Laelius trogodermatis, sp. nov. 



9 . Length, 2.4'""\ Black, highly iwlisbed, iinpunctured, bntmuler 

 a high power exhibiting a fine alutaeeous sculpture. Head very little 

 longer than wide, without pubescence; a short keel between antenna-; 

 mandibles 4-deutate, honey-yellow; palpi pale. Antennae 13-jointed, 

 extending to teguljTe, pale brownish; scape basally black, about as long 

 as the pedicel and first two flagellar Joints united; pedicel longer than 

 the first flagellar joint; second flagellar joint slightly shorter than the 

 first ; those beyond nearly equal, quadrate. Thorax elongate, the pro- 

 notum three or more times as long as the mesonotum, the scutellum 

 with a transverse impressed line at base. All coxa? black; all femora, 

 except tips, black or piceous brown, the trochanters, tibite, and tarsi, 

 honey-yellow. Wings hyaline, the venation yellowish. Abdomen a 

 little longer than the thorax, pointed ovate, black, shining, impunctate, 

 with sparse black hairs at apex. In the S the head is slightly 

 wider than long; the antennas longer; the pedicel is a little shorter 

 than the first flagellar joint, the flagellar joints, after the first, being 

 about twice as long as wide, while the basal joint of the maxillary palpi 

 is slightly swollen. 



Habitat. — District of Columbia ( ?) 



Types in National Museum. 



Described from 1 S and 1 9 specimen, reared l^ov. 1, 1884, from the 

 larva of Trogoderma tarsale in the Belfrage collection. 



Laelius tricarinatus, sp. nov. 



S 9. Length 2.5 to 2.9""". Black; legs, except coxae, and ar.tenna?, 

 brownish yellow. Antennae 13-jointed, twice as long as the head, the 

 pedicel and first flagellar joint about equal, the following shorter but 

 still all longer than thick. Mesonotum very short, without furrows. 

 Scutellum with a transverse fovea across the base. Metathorax longer 

 than wide, transversely rugulose, with 3 carinae on the disk. Wings 

 hyaline, the venation pale yellowish ; marginal and stigmal nervures 

 very short, scarcely developed. 



Habitat. — District of Columbia and Florida. 



Types in Coll. Ashmead. 



This species is readily distinguished by the three longitudinal meta- 

 thoracic carinae and by the anterior coxa? being always black. It comes 

 nearest to L. nigripilosus, and like that species is sparsely covered with 

 long black hairs. 



Laelius rufipes, sp. nov. 



9 . Length 3""". Black, shining, alutaeeous, sparsely pilose; anten- 

 n;e 13-jointed, brown; three basal joints, mandibles, palpi, and legs 

 rufous. Metathorax with 4 longitudinal carinae on the disk, the surface 

 rugulose. Abdomen pointed ovate, shorter than the thorax, j)olished 



