204 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



vol. 48. 



Fig. 6. 



-Outline of the tip of the ovtpositok of Peoasphondylia 

 beaziliensis. 



the third vein uniting with the margin at the apex; the fifth forked. 

 Halteres fuscous yellowish, the knob whitish. Coxae fuscous 

 yellowish, the legs a nearly uniform yellowish white. Claws slender, 

 evenly curved, simple, the pulvilli rudimentary. Genitalia; basal 

 clasp segment short, stout; terminal clasp segment subapical, short, 

 tapering to a rather narrow, coarsely pectinate, chitinized apex. 

 Other structures indistinct. 



Female. — Length, 1.5 mm. Antennae nearly as long as the body, 

 sparsely haired, light brown; 14 subsessile segments, the third and 

 fourth narrowly fused, the fifth with a short stem and a cylindric 

 basal enlargement, which latter has a length 3 J times its diameter 



and rather high, 

 irregular circumfili 

 as in the female of 

 ScJiizomyia; the 

 thirteenth segment 

 with a length near- 

 ly four times its 

 diameter, the four- 

 teenth probably 

 only slightly re- 

 duced. Palpi; first 

 segment' irregular, 

 the second with a length nearly twice its diameter, the third greatly 

 produced, with a length nearly three times the second, the mouth 

 parts slightly produced. Ovipositor with a length less than half the 

 abdomen, the basal portion stout, fleshy, the distal part subacicu- 

 late, with about four submedian groups of one or two hairs at nearly 

 regular intervals, and apically tapering slightly to an irregular point. 

 Other characters nearly as in the male. 



Exuviae. — Length, 2 mm., light yellowish brown, the dorsum of 

 the abdominal segments with a transverse row of moderately stout, 

 chitinous points at the anterior third. Type Cecid. 1526. 



The above specimens were loaned for study through the courtesy 

 of the United States National Museum and are labeled 121 Bonito, 

 Province of Pernambuco, Brazil, Jan. 29, 1883. 

 Type.— Cat. No. 18488, U.S.N.M. 



OXASPHONDYLIA, new genus. 



This form is closely related to AspTiondylia, though easily dis- 

 tinguished therefrom in the female by the relatively slight reduction 

 of the terminal antenna! segments and the reticulate circumfili. The 

 dorsal pouch so characteristic of AspTiondylia is only slightly devel- 

 oped in this species. 



Type of the genus. — Oxasphondylia reticulata, new species. 



