524 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 56 



XESTONOTIDEA, new name. 



Xestonotus Foeiister, Kym. Stud., vol. 2, 1856, p. 107 (preoccupied by Xesto- 

 notus LeConte, Trans. Amer. Philos. Soc, vol. 10, 1853, p. 383). 



Since the original description of Xestonotus Foerster, whach was 

 described without included species, two species have been referred 

 to the genus. In each case, however, the author has questioned the 

 correctness of his placement of the species. Neither Xestonotus 

 andrici'pliilus Ashmead nor X. meridionalis Brues, therefore, are eli- 

 gible for designation as type of the genus. The following new species 

 agrees with Foerster's characterization. It is accordingly named as 

 the type of Xestonotus Foerster and automatically becomes type of 

 the new generic name. 



Type of the genus. — Xestonotidea foersteri. 



XESTONOTIDEA FOESTERI, new species. 



Female. — Length, 1.5 mm. Head transverse as viewed from above ; 

 lateral ocelli slightly less than their own diameter from the eye- 

 margin, more distant from the front ocellus; head viewed from in 

 front a little broader than long; frons smooth and polished with a 

 few transverse striae just above the antennae; occiput and the ver- 

 tex behind finely transversely striated; antennae inserted at the 

 clypeus, 10-jointed; scape long, slightly swollen beyond the middle; 

 pedicel twice as long as the third antennal joint, and a little longer 

 than the fourth; fifth subequal to the fourth; sixth and seventh 

 Bubequal to each other and slightly shorter than the fourth; eighth 

 and ninth equal to each other and as long as the fourth ; tenth a little 

 longer than the pedicel; joints 7 to 10 somewhat thicker than the 

 preceding joints, but not forming a well-differentiated club; thorax 

 ovoid, the mesonotum polished, with distinct, complete parapsidal 

 grooves, which are slightly convergent; scutellum smooth, sparsely 

 hairy, longer than broad, ovate, unarmed; propodeum short, ele- 

 vated into a sharp carina on each side of a rather narrow smooth 

 medial depression; wings extending beyond the apex of abdomen; 

 legs moderately long, all femora club-shaped, thickened toward the 

 apex; hind tarsi distinctly longer than their tibiae; abdomen as 

 long as the head and thorax, broadest beyond the middle, the first 

 tergite as broad as long with a distinct longitudinal carina on each 

 side of a median groove and more or less depressed laterad of these 

 carinae; second tergite large, constituting nearly two-thirds the 

 total length of abdomen, basally with a distinct longitudinal foviea 

 on each side of the middle and a shallower median one. Head, thor- 

 ax, and abdomen black; antennal scape and pedicel and all legs 

 except their coxae rufo testaceous; antennal flagellum black, the 

 basal joints more or less brownish. Male unknown. 



Type-locality. — Coimbatore, South India. 



Type.— C&t. No. 22289, U.S.N.M. 



Described from one specimen labeled "Parasite from galls on 

 Ischaemum ciliare. 26-XI-1915. Y. R., coll." 



