xo. 2293. PARASITIC CHALCIDOID FLIES— TIMBERLAKE. 185 



just before the apex; the venter of abdomen brownish except at 

 base and on the lateral margms near apex. Length, 1.36 mm. 



Described from two females, one male (type, allotype, and para- 

 type), China, probabl}' from one of the southeastern provinces 

 (A. Koebele), Koebele's No. 1553. 



r^/2^6'.— Cat. No. 22045, U.S.N.M. 



5. ISODROMUS VINULUS (Dalman). 



Plate 41, fig. 17. 



Encyrtus vinulus Dalman, Svensk. Vet.-Akad. Handl., vol. 41, 1820. p. 349. 

 Homalotylus vrnulus Mayr, Verh. zool.-bot. Ges. Wien, vol. 25, 1876, p. 753. 

 Nobrimus vinulus Thomson, Hym. Skand., vol. 4, 1876, p. 140. 



Female. — Head in general shape very nearly as in niger, but the 

 frontovertex broader, being about twice as long as wide, the dorsal 

 orbits of eyes slightly diverging anteriorly ; ocelli nearly in an equilat- 

 eral triangle, the posterior pair almost touching the eye margins, 

 and the median one slightly behind the middle of the frontovertex; 

 antennal sockets situated farther apart than in niger, their inner rims 

 strongly convergent above, the distance between their lower corners 

 being about twice their length and between the upper corners about 

 one-half longer again than their length; scrobes faint and hardly 

 reaching a line drawn between the lower corners of the eyes. Antennae 

 considerably longer than in icergae or niger, the scape being fully as 

 long as the eyes and the flagellum proportionately as long; scape 

 a little curved near the base, subcylindric^l, the inner lower margin 

 slightly expanded, and the underside excavated at apex as usual; 

 pedicel as long as the first two funicle joints combined; funicle joints 

 all nearly equal in length, the first slightly longer than thick, the 

 second and third about as long as thick, and the sixth considerably 

 wider than long and about one-half wider again than the fii'st joint; 

 club solid, obliquely truncate nearly to the base, and as long as the 

 funicle lacking the first and one-half of the second joint. Mandibles 

 with the three teeth rather short and acute, but longer than in niger 

 or iceryae. Axillae and scutellum practically as in niger. Wings 

 unusually narrow, their basal third bare of cilia, the speculum dis- 

 tinct for a short distance and running nearly parallel with the sub- 

 marginal vein; stigmal vein forming a rather acute angle with the 

 postmarginal and joining the submarginal just before the latter 

 reaches the costal margin; postmarginal vein well developed and 

 nearly one-haK as long as the stigmal. Abdomen a little longer than 

 wide and about tv.^o-thirds as long as the thorax, the sides subparallel 

 for a short distance, but the base and apex well rounded; tactile 

 plates situated about half way between the middle and the apex, the 

 vibrissae reaching well beyond the apex; the ovipositor barely 

 visible. Head finely punctulate nearly as distinctly as in niger, the 



