from the Fhilippine Islands. 197 



of M'liich the face is very much retreating. The antennae are rather 

 distant at the base; the third joint narrow, linear, several times longer 

 than broad; the arista glabrous. (I cannot perceive any pubescence 

 with my strongest lens.) The thorax is proportionally longer, with a 

 short, necklike prolongation in front, which makes the head appear 

 more detached from the thorax, than in Taeniaptera. The prothorax 

 forms a collar-like ridge, separated by a distinct depression from the 

 mesonotum. — Grammicomyia resembles Taeniaptera in having a distinct 

 clypeus, no transverse swelling on the upper part of the metanotum, 

 a fringe-shaped row of hairs on the pleura above the middle coxae, 

 etc. The venation is that of a typical Taenioptera; the anal cell 

 oblique; the anterior basal crossvein nearly in a line with the posterior, 

 a trifle more proximal; the tip of the second vein but very little more 

 distal than the posterior crossvein; the first posterior (?ell very much 

 attenuated at the end. The chaetotaxy likewise does not differ from 

 the normal one of Taeniaptera: two vertical and two fronto- orbital 

 bristles on each side; no postvertical; the occiput (very much in view, 

 in consequence of the flattened shape of the head) is beset with short, 

 black, pile; this pile also exists in Taeniaptera, but is less visible. 

 The upper fronto -orbital bristle is inserted a little higher than the 

 ocelli, on account of the unusually low position of the latter. Two 

 posthumeral bristles; three supra -alar (in the Taeniapterae I know of, 

 only two); one pair of praescutellar (far apart), and one pair of scu- 

 tellar bristles. 



NB. In Mr. Bigot's description of G. testacea, a slip of the pen 

 has occurred; in the second line, read vertice, for fronte; and 

 fronte for facie. 



Telostylus Bigot, Rev. et Mag. de Zool. 1859, is also a good 

 genus, which, in outward appeai-ance, somewhat resembles the smaller 

 forms of Nerius (duplicatus, striatus etc.), but is easily distinguisted 

 from them by the structure of the third antennal joint which is pointed, 

 and bears the tomentose arista at the tip, and by the presence of four 

 bristles on the scutellum, instead of two, the Anterior pair being much 

 smaller than the apical one. In other respects, the chaetotaxy is the 

 same as in those species of Nerius. The venation is that of Nerius; 

 the tip of the second longitudinal vein is near the apex, far, beyond 

 the posterior crossvein. Besides the T. binotatus Bigot, I describe 

 below a second species, T. inaecus. Coenurgia rem! pes Walk. J. Fr. 

 Lin. Soc. IV, 164, is a synonym of T. binotatus, published a few 

 months later. 



