198 ENTOMOLOGICAL NEWS. [May, '09 



simple. Tibiae and tarsi rather strongly spined ; first joint of hind tarsi 

 equal to 2 -f- 3 ; first joint of middle tarsi about equal to 2 + 3 + 4. Abdo- 

 men finely, closely punctured ; ventral segments beyond the third with 

 larger, sparser punctures ; emargination of the last ventral plate broad 

 round. 



Black ; palpi, three apical joints of tarsi rufous ; tegulae pale testace- 

 ous ; eyes (dry) green ; two basal segments of the abdomen clear red. 

 Wings hyaline, iridescent ; venation ferruginous. Face, clypeus, thorax, 

 legs beneath, abdomen (more strongly so towards the apex) with silvery 

 pubescence. Pygidium with pubescence yellowish. Abdomen beneath 

 with some long reddish hairs. 



Hab. Livermore, Larimer Co., Colo., alt. 6000 ft., July 3, 

 1900. Type in the collection of Colorado Agric. College.* 



This species is quite distinct. It belongs to Fox's Section 

 i and runs to T. pepticus Say, from which it differs in the color 

 of the abdomen, the yellow hair of the pygidium, the different 

 emargination of the eight ventral abdominal segments. 



Tachytes propinqnus n. sp. 



T. crassus Patt., Roh., ENT. NEWS, May, 1908, p. 224, in part. 

 9- Length 16 mm.; length of anterior wing u mm. Robust. Ante- 

 rior margin of the clypeus in the middle produced into a rather narrow 

 process which is slightly emarginate ; three distinct lateral teeth ; clypeus 

 not at all carinated, closely punctured, except on the anterior margin. 

 Front and vertex finely closely punctured ; an indistinct furrow from an- 

 terior ocellus to near base of antennae ; ocellar area parted by a very fine 

 furrow ; middle femora of the vertex very faint. Distance between the 

 eyes at the top equal to the ledgth of antennal joints 2 + 3, perhaps a 

 little greater. Third antennal joint a little longer than the vertex ; scu- 

 tellum not impressed. Metathorax, except anterior part of the meta- 

 pleurae which is shining and smooth, finely granular ; a distinct rather 

 wide furrow from base of metanotum to lower part of posterior face ; this 

 furrow does not broaden noticeably anywhere. Metaihoracic spiracles 

 about three times as long as wide, rounded at the ends. Second and 

 third cubital cells about equal width on the radial nervure. Tibiae and 

 tarsi rather strongly spinose. Longest spur of hind tibiae about equal to 

 the length of the first joint of hind tarsi. First joint of hind tarsi a little 

 shorter than the length of 2 + 3. Abdomen broad at base, tapering to 

 an more or less acute apex ; dorsally finely closely punctured ; ventrally 

 more shining, the first two segments closely punctured, the remaining 

 strongly, closely punctured at apex, smooth and shining at the base. 

 Pygidium rather more acute than usual, very slightly contracted apically. 



* Since the above was written I have taken three males of this species at Boulder, Colo., 

 Aug. i and 4, 1903. The eyes in life are dark green. 



