478 SUPPLEMENT. 
NEMOCHZETA (p. 38). 
Since the commencement of this volume was published three other species of 
Nemocheta have been added by me; the four now known may be distinguished as 
follows :— 
1. Base of the wings dilute brown or yellowish. ©. . . . - - + + + & 
Base of the wings dark fuscous . . . «6 ee 8 ee ee ee 
2. Abdomen laterally rufous in the male (sometimes also, but in a less 
degree, in the female); sides of the front cinereous . . . . . « dissimilis, v. d. Wulp. 
Abdomen black, without any rufous portion; sides of the front shining 
black. 2. 0. 1 ee ee ee ee ee eee ww ee frontalis, v. d. Wulp. 
3. The fuscous colour on the wings reaching no farther than the two inferior 
basal cells 2 2 1 ee ew ee ee ee nitida, v. d. Wulp. 
The fuscous colour on the wings extending to the end of the first vein ; 
and over the small cross-vein. . . . 1. ee + ee ee) tnfuscata, v. d. Wulp.. 
Nemocheta dissimilis (p. 39 *). 
To the locality given, add:—Mexico, Atoyac, Teapa (H. H. Smith), N. Yucatan 
(Gaumer). 
Three males and five females, varying from 7°5-10 millim. in length; some of the 
females have the abdomen rufous at the sides, though less conspicuously so than in 
the. males. 
2. Nemocheta frontalis. 
Nemocheta frontalis, v. d. Wulp, Tijdschr. voor Ent. xxxv. p. 194’. 
Black, including the antennz and legs; head whitish; front laterally bluish-black ; tegulee and base of the 
wings dilute brown. 
Length 11 millim. 
Head yellowish-white ; front as broad as the eyes, bluish-black, shining ; frontal band opaque, deep black ; 
beard and pilosity of the occiput yellowish. Antenne black ; second joint bristly on the upper part; 
third joint about twice as long as the second ; arista thickened to beyond the middle. Proboscis black ; 
palpi fulvous. Thorax and scutellum black; anterior margin of the thorax with grey tomentum. 
Abdomen convex, shining black or piceous ; macrocheta as in IV. dissimilis. Legs with many bristles, 
those on the outer side of the middle tibiee long and stout; foot-claws elongate, yellowish, with a 
black tip. The wings and their venation as in the above-named species; their base and the tegule 
brownish. 
Hab. Mexico 1, Atoyac in Vera Cruz (H. H. Smith). 
Two males. 
* The reference to the Plate is incorrectly given on this page as “Tab. V. figg. 18, 18a”: it should be 
“Tab. II. figg. 18, 18a”; and the same remark applies to Gymnomma nitidiventris (p. 88) and Gronia 
mewicana (p. 40), where the Plate is quoted as “ V.” instead of “IT.” 
