1920.] 



199 



head. At the base of each fore winpf is a very dark spot low down on 

 the axiUa, and (in mounted examples) .a similar spot occurs (internally) 

 at the base of the ovipositor. 



Head.— -hongev than broad ; across the eyes 10 : 9, at the mouth edge 2:1. 

 The eyes extend over | of the depth (length) and are quite bare. Antenna 

 (figs. 1,«) length -T-'S mm. Mandibles distinctly obtusely angled on the 

 outer edge, just behind one-half from the apical tooth to the outer basal angle. 

 Two teeth, one apical and rather long, the other subapical and inconspicuous ; 

 6-8 ridges ventrally, 8-9 bristles along tlie outer anterior edge aud 1 on the 



Fig. 1. — Antenna oi Alfonsiellafimhriata Waterst. a, last funicular joint. 



inner edge, about ^. Appendage narrow (not half as broad as the mandible), 

 stout, rod-like, with 14-15 short hook-like ridges. Trophi : stipes 2 short 

 bristles along the edge (1 at |, 1 at | from the base). No apical lateral splint 

 or trace of palpus. Galea 2 bristles ; labium 2 bristles. 



Thorax. — Pronotum deeply and broadly angularly incised posteriorly, with 

 a stronger linear parabolic incrassation of the chitin before the posterior edge ; 

 anteriorly broadly truncate. Surface reticulated only medianly and at the 

 extreme sides, anteriorly, with about 50 (25 : 25) bristles. Mesonotum only a 

 little {\) longer than the scntellum. Parapsides 4-5 bristles. Mesophragnia 

 ^ longer than the scutellum. Mesosternum with 6-8 (3-4 : 3-4) hyaline spines 

 of moderate length anteriorly, and 10-12 bristles in two irregular approxi- 

 mated rows (5-6 : 5-0) about the mid-line, and 1-2 other bristles less definitely 

 placed on each side. Metanotum narrowly reticulate medianly, otherwise 

 smooth ; metapleurae bare. Propodeon in two smooth oblong sclerites, divided 

 by a linear membranous area. Spiracle narrow, elongate, a little wider at both 

 ends, with 10 bristles behind. 



Wings. — Fore wings: length 1-4 mm., breadth "6 mm. The nenration 

 extends to about -6 mm. from the radix. Submarginal: marginal: radius; 

 approximately in ratio 4:1:1; the postmarginal ends indefinitely, but is only 

 about i of the radius at the point where it fades out. On the submarginal are 

 3 bristles (one at \ aud another at % from the base, and ihe third at its junction 

 with the costa) ; a fourth longer bristle stands on the costa above the 

 origin of the radius. Submarginal cell proximally bare : on distal half with 

 scattered minute bristles, aud 12-15 louger at the edge. Surface of wing 

 densely clothed except for a narrow, clear hyaline tract, parallel with the hind 



