306  DEPTERA, | 
large. Wings somewhat longer than the abdomen ; mediastinal cell short, before the middle of the 
costa; small cross-vein usually beyond the end of the first vein and distinctly beyond the middle of the 
discal cell; fourth vein a little curved upwards at its extremity; apical cell broadly opened at the tip of 
the wings; sometimes the wings are spotted and the first and third veins have a row of very. minute 
bristles. 
In this genus the apical cross-vein is inconspicuous; this neuration forms a transition 
to that of the following group, Anthomyine. The species are of small size. 
1. Wings not spotted 2. 6 6 1 ee ee ee ee ee 
Wings with blackish spots . © 2. 2 1 6 7 ee ee ew ee 6 
2. Antenne (and palpi) black ; eyes in the ¢ narrowly separated on 
the front. . . .... toe ee ee we ewe frontina, v. d. W. 
Antenne yellow or red ; eyes in the gd contiguous* . .. .. 38. 
8. Palpiblack . 2. 2 2 ew ee ee ee ee ee Ao) 
Palpi yellow. . . . . . te ee ee ww ew | aw ona | 
4. Thorax with blackish stripes before the transverse suture. . . . wher, Gigl.-Tos. . 
Thorax ochraceous and without stripes before the transverse suture. hieroglyphica, v.d.W. 
5. Abdomen cinereous, with a black dorsal line . . . . «. . . dorsilinea, v. d. W. 
Abdomen cinereous, with two short dorsal stripes on the second and 
third segments. . . 6. 1 6 ee ee ew ee ow ee «digramma, v. d. W. 
6. Antenne yellow . . . ee woe ee 7, 
Antenne black (in C. monstrata the basal joints rufous) ~ ee e 8, 
7. Palpiyellow . 2... 1. 1 1 ee we we ew ee ew ew ee tuber, Gigl.-Tos. 
Palpi black .) ¥ Br BA EG . .« polystigma, v. d. W. 
8. Abdomen with irregular black reflecting spots, two dorsal spots 
usually close together on the second and third segments ; palpi 
black . . . rn pterostigma, v. d. W. 
Abdomen with three black reflecting spots on 1 the second and third 
segments ; palpi and basal joints of the antenne rufous . . . monstrata, v.d. W. 
1. Clinopera frontina, sp. n., ¢. 
Cinereous ; thoracic stripes, spots on the abdomen, antenne, palpi, and legs black; eyes narrowly separated 
on the front. 
Length 5 millim. 
Head whitish, the cheeks with brown reflections; front narrow, but separating the eyes; frontal band black, 
linear ; frontal bristles in a continuous row. Antenne black, the second joint slightly rufous; arista 
thickened at the base, long-plumose. Proboscis and palpi black. Thorax and scutellum cinereous, the 
thorax with four black stripes, which are conspicuous before the transverse suture only ; scutellum with 
a black median stripe. Abdomen ovate, cinereous, with some rufous tinge; on the second segment two 
black dorsal spots close together; on the third segment two similar spots, though less distinct ; the hind 
margin of these segments with a row of black points ; second segment with marginal, the third and anal 
segments with marginal and discal, macrochete. Legs black, the knees at their extreme apex somewhat 
rufous. Tegule whitish. Wings greyish-hyaline. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
A single male specimen. 
* In the species of which the males are known; C. dorsilinea may prove to differ in this respect. 
