WERNER MARCHAND 185 



and the segments of the abdomen relatively different, while the male 

 is much smaller, differently colored, and with the antennal Joints 

 totally dissimilar. 



Dr. Mayr's species, Phanurus tabani, approaches nearest to Tele- 

 nomus laricis Hal.,'* with which he makes comparison; while Phanurus 

 tahanivorus agrees more nearly with Telenomus othus Hal., repre- 

 sented on the same plate, Fig. 4 (Mayr's paper). 



Phanurus emersoni Girault. — A new Phanurus egg parasite of 

 Tabanidae was discovered by Girault quite recently (1916), Phanurus 

 emersoni Girault, and was reared from tabanid eggs at Dallas, Texas. 

 Girault gives descriptions of three allied species. 



1. Phanurus opacus Howard. — Both sexes are black; the thorax 

 above is subglabrous. 



2. Phanurus floridanus Ashmead. — The head and thorax are pol- 

 ished, the tibiae and knees pale brown; segments one and two of 

 abdomen have very short striae at base. The club is stouter than 

 in ovivorus. 



3. Phanurus ovivorus Ashmead. — The club is slenderer than in the 

 preceding, the tibiae dark, the thorax above showing faint reticulation, 

 cephalad but mostly glabrous. The first two segments of the abdo- 

 men do not have striae at base, or else these are extremely minute and 

 short. In flavipes the vertex and scutellum are uniformly finely 

 reticulate. The species ovivorus is very close to opacus, if not identical 

 with it. 



4. Phanurus emersoni Girault. — Female, length 0.90 mm. Black, 

 the wings subhyaline, the venation pale dusky, the tarsi yellow. 

 It differs from Phanurus opacus Howard in that the male is vari- 

 colored in the latter, and from the female opacus, floridanus, and 

 ovivorus in that the vertex and scutum of the latter are densely reticu- 

 lated. It differs from tahanivorus in that the abdomen of the latter 

 is only somewhat longer than the rest of the body, the third segment 

 is not a fourth the length of the third (second?), the thorax above is 

 reticulated, and the male has the entire thorax honey-yellow, also the 

 antennae (besides the legs and head as in tahanivorus). It is closely 

 related to the female of ovivorus, which it resembles. The stigmal 



'* Mayr, Entomological Magazine, ii, Plate XIII, Fig. 2, 



