TETANOCERA. 
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TETANOCERA. 
Tetanocera, Latreille, Gen. Crust. et Ins. iv. p. 850 (1809). 
In the Mexican collections under examination there are five species belonging to 
this genus :— 
‘1. Wings reticulated. © 6 2 1 ee ee ee ee 2. 
Wings not reticulated . 2. 2. 1 ee ee ee we ew 
2. Reticulation of the wings sparse, forming transverse stripes between 
the veins . woe es . foe ee ew we ee) Straminata, v. d. Wulp. 
Reticulation of the wings very close, showing transparent dots in 
the brown ground-colour . . rs P 
3. Tip of the antenne blunt ; front with black spots a black central - 
point on the face . . . . ee oe es) . 6pictipes, Loew. 
Tip of the antennz pointed ; front with a brown median stripe; no 
black point on the face . acuticornis, v. d. Wulp. 
_ 4, Arista with long erect hairs ; posterior cross-vein distinetly bi- 
arcuated. . 2... . Loe ee ew ee. Spreta, v. d. Wulp. 
Arista with close plumosity of moderate length; posterior cross- 
vein slightly biarcuated. 2 2. 1 ee ee ee ee - plumifera, v. d. Wulp. 
1. Tetanocera straminata, sp.n,3¢ 9. (Tab. 1X. figg. 11,3; 11a, head in 
profile.) 
Testaceous; head rufous, with black dots; arista black-haired; wings with a sparse reticulation, forming 
spots and transverse stripes between the veins. 
Length 6°5 millim. 
Face shining ochraceous, with silvery-white reflections ; front orange-yellow, with several black dots—-one on 
the ocellar knob, another immediately behind the insertion of the antenne, one on each side next the - 
antenn, and some smaller ones at the orbits; these black dots mostly bordered with silvery-white. On 
the occiput a black median band, laterally bordered with white. Antenne orange-yellow ; first joint 
short ; the second longer, with black hairs on the upperside; the third as long as the second, slightly 
excised above; arista black, with a dense black plumosity. Proboscis rufous; palpi yellow. Thorax, 
scutellum, and abdomen testaceous ; thoracic dorsum cinereous, with four indistinct brown lines; meta- 
notum grey. Legs rufous; tips of the femora and tibie black; tarsi brown, black towards the tip. 
Halteres yellow. Wings tawny; mediastinal cell black; a brown border goes from it along the costa 
and round the tip; the rest of the surface has a dispersed brownish reticulation, forming transverse stripes 
between the veins ; cross-veins slightly infuscated ; small cross-vein under the end of the first vein and 
on the middle of the discal cell; posterior cross-vein convex. 
Hab. Mexico, Amula in Guerrero 6000 feet (H. H. Smith). 
Three males and one female. 
2. Tetanocera pictipes. (Tab. IX. figg. 12, wing; 124, head in profile.) 
Tetanocera pictipes, Loew, Wien. ent. Monatschr. iii. p. 292°; Monogr. Dipt. of N. Amer. i. p. 111’. 
Brownish-cinereous; face whitish, with a black central point; antenne rufous, third joint blunt; femora 
spotted; wings with a very close reticulation, showing transparent dots. 
Length 5-6°5 millim. 
