294 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



MEGARHOGAS THERETRiE, new species. 



Female. — Length 7.5 mm,; compared with the original description 

 of the genotype of this genus the present species differs as follows : 

 Head scidptured, stramineous, region between the antenna3 black, 

 antennae brownish, longer than the body; dorsulum almost polished, 

 its lobes mostly brownish, otherwise stramineous, the posterior half 

 with a median longitudinal furrow; propodeum not keeled, mostly 

 punctate; radius in hind -wings not bisinuate; abdomen dorsally 

 without a median keel except for an ill-defined one at base of first 

 segment, second segment approximately two-thirds the length of the 

 first, third segment without circumscribed anterior lateral corners; 

 thorax and its appendages and the abdomen mostly stramineous to 

 yellowish, wings brownish with a rather washed-out appearance in 

 the radial cell and in the membranous area below the second sub- 

 marginal cell. 



Male. — Notably differs from the female in having the second and 

 third joints of the maxillary palpi present, in the dry specimens, as 

 apparently collapsed sacules of rather cuneiform outline with the 

 angles rounded oft', thus contrasting greatly with the simple palpi in 

 the female ; in most other particulars there is an apparently complete 

 similarity to the female. 



Type.— Cat. No. 14157, U.S.N.M., female and male. 



Type-locality. — Medan, Deli, Sumatra, where on authority of 

 Doctor de Bussey this species was reared from the larvae of the moth 

 Theretra celerio Linnaeus. 



Among twenty-two paratopotypes selected from over two hundred 

 specimens there is a noticeable variation in color and size, some of the 

 female paratopotypes being rather suffused with brownish above, 

 whilst in the male paratopotypes there is a tendency toward a fading 

 out of the tegument and a coincident decrease in length, one specimen 

 being only 4 mm, long. 



ZALEPTOPYGUS, neAw genus. 



Related to LejJtojnjgus (Foersten) Thomson, from which it may be 

 readily distinguished by the apex of the propodeum overlapping the 

 upper face of the hind coxse to a point at or beyond the middle of the 

 same, by a break in the occipital carina such as is found in Cremastus 

 Gravenhorst and by the greatest diameter of the lateral ocelli in the 

 male being as great or nearly as great as the ocellocular line or greater 

 than the same as is the case in (Porizon) Z. orhitalis Cresson. The 

 affinities of this genus in the head, etc., are with Cremastus Graven- 

 horst Foerster, when we ignore the venation as described in Foerster's 

 classification. But still greater is the affinity with Pristomerus 

 Holmgren when we ignore the armature or lack of armature of the 

 bind femora, the venation, and the head. In brief, then, in the more 



