HYMENOPTERA PARASITICA 303 



The abdomen is not quite as long as the head and thorax united and has a thinly 

 pubescent girdle at base. 



^. Agrees well with the ?, except that the abdomen is smaller, the antennae and 

 legs being more of a brownish-yellow, not distinctly red, the hind coxae being blackish 

 at base, while the antennae are slightly dusky toward apex, have 1 5 distinct joints, and 

 are longer than the whole insect, the joints of the flagellum being long, cylindrical, 

 subequal in length, and nearly four times as long as thick. 



Hab. Lanai : Halepaakai (3000 feet). Taken in January and July. 



HvPODiRANCHis, gen. nov. 



(Type H. hawaiiensis.) This new genus will fall in a table of the genera of the 

 Eucoelinae between Dii'anchis Forster and Hcptamerocera Ashmead. From the former 

 it differs principally by its scutellar characters, the cup of the scutellum being smaller, 

 neither large-oval nor rounded, but small, narrow and ellipsoidal; from H eptamerocera 

 and allied genera, i.e., Hexap/asta, Pentamerocera, &c., it is readily separated by its 

 antennal characters, the antennae in the female being without a distinctly differentiated 

 club : the first two joints of the flagellum are thinner and shorter than the following 

 joints and about equal, or nearly, in length; joints 5 to 13 are always somewhat 

 stouter than joints 3 and 4, all fluted and more or less ellipsoidal in outline. 

 Metathorax bicarinate. Wings pubescent, well ciliated at apex, the marginal cell 

 being more or less distinctly open along the front margin, the second abscissa of the 

 radius being straight or nearly, and clavate, or thickened towards apex, and one- 

 half longer than the first. 



(1) Hypodiranchis hawaiiensis, sp. nov. 

 (Plate VIII. fig. 5, ?.) 



$. Length I's mm. Polished black; mandibles, first four joints of the antennae 

 and the tegulae testaceous ; legs, including coxae, brownish-yellow ; wings hyaline, the 

 veins brown. The antennae are almost the length of the body, 13-jointed, sparsely 

 pilose, joints 5 to 12 ellipsoidal, subequal, all a little longer than the third, about 2^ 

 times longer than thick, the last joint ovate, longer than the penultimate and also 

 fluted. The scutellum is longitudinally striate along the sides, the cup being very 

 narrow, ellipsoidal in outline and with a small fovea at apex. The metathorax, except 

 the pleura, broadly at base, is wrinkled or irregularly lineated, opaque and feebly 

 pubescent. The marginal cell in the front wings is open along its front margin from 

 near its base ; while the abdomen is normal, hardly longer than the head and the 

 thorax united, blunt at apex and with a narrow pubescent girdle at base. 



Hab. Hawaii : Kona (4000 feet). Two % specimens taken in August. 



40 — 2 



