564 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.50. 



ANALYTICAL KEY OF SPECIES. 



1. Front and vertex narrow, about three times as long as wide 2. 



Front and vertex -wide, about one-half longer again than wide; ocelli in a right- 

 angled triangle; wings hyaline; antennal scapecylindrical; general color pale 

 orange yellow 1. ehrhorni, new species. 



2. Wings slightly dusky with a deeper stain beneath marginal and stigmal veins; 



scape flat, slightly expanded; ocelli nearly in an equilateral triangle; general 



color orange yellow, the antennae dusky but wliitiA at apex 2. tcrryi 



(Fullaway). 

 Wings bifasciate with apex and medial band hyaline, scapecylindrical; ocelli in 

 an acute-angled triangle; general color deep orange yellow, antennae uniformly 

 yellowish 3. bifasciatus, new species. 



'l. PSEUDOCOCCOBIUS EHRHORNI, new species. 



Female. — Front and vertex about one-lialf longer again than wide, 

 margin of eyes parallel; ocelli in a right-angled triangle, the posterior 

 pair their own diameter from the eye margin, and twice their diameter 

 from the occipital border; eyes rather small, about one-third longer 

 than wide, with fine, short and rather thick pubescence; head as 

 seen from in front as wide as long; cheeks a little longer than greatest 

 width of eyes; antennal scrobes narrow, rather pronounced and 

 uniting above. Antennal scape slender, cyhndrical; pedicel narrowed 

 at base, as long as the first thi'ee funicle joints combined; funiclc 

 nearly cylindrical, increasing but slightly in width distad, all joints, 

 however, a little wider than long, the first four nearly equal in length, 

 the last two slightly . longer ; club large, ovate, shghtly obliquely 

 truncate at apex, about twice as wide as the last funicle joint, and as 

 long as all the funicle joints combined, the sutures plaudy indicated. 

 Wings uniformly ciUated; the oblique hairless streak widened below, 

 not interrupted, and nearly connecting with the hairless streak on 

 the posterior border of the wing; bristles on the submarginal vein 

 weak; stigmal vein at angle of about 70° with the margin of \nng. 

 Ovipositor protruded about one-half the length of the abdomen. 

 Length: 1.0 to 1.1 mm., exclusive of ovipositor. 



General color nearly uniformly pale orange yellow, deeper on the 

 notum of thorax, a httle paler on the head and underparts; the 

 propodeum pale brown; a deeper brown spot on each side of the venter 

 at the apex of abdomen, and another pair of brown spots surround 

 the dorsal vibrissal plates ^ of the abdomen. Antennae uniformly 

 orange yellow, somewhat duskier than the body, possibly due to 

 discoloration; legs concolorous with the underparts, the last joint of 

 the tarsi blackish. The short, a])pressed hair of the notum dusky in 

 color and rather sparse. Wings hyaline, the veins pale yellowish. 



1 These plates are usually called spiracles by most authors but as pointed out by Alice L. Embleton 

 (Trans. Linn. Soc. Lond., ser. 2, Zool., vol. 9, p. 247, pi. 12, figs. 39, 42, and 43) they are probably tactile 

 plates and have no connection with the spiracles. They are characteristic of the Encyrtidae and especially 

 of the Encyrtinae. 



