DIPTERA OF THE FAMILY EPHYDRIDAE 6 



Abdomen narrow ; fifth segment longer than fourtli, greenish glaucous ; apical margins 

 of these segments with few long setae. 



Legs olivaceous; post-extensors of fore femora very long. Wings blackish; length to 

 width as 60: 32; posterior crossvein perpendicular to fifth vein. 



9 . Similar to male but with stronger bristles, many of the mesonotal setulae bristle- 

 like ; the prescutellar convexity bearing some setae and the prescutellar acrostichals stronger 

 than in the male, jirescutellar acrostichals slightly divergent. Scutellum slightly elongate and 

 noticeably con\e.x. Postmarginal cilia of mesopleura dense and sternnpleura strongly pilose 

 above. 



Type. — S ; Indian Tibet: Kyam Hot Spring, 15,630 feet altitude, 24 July, 1932. 



Paratypes. — 3 <5 , 4 9 ; topotypical. 



A female from Phuga hot spring, 14,500 feet altitude, 24 August, 1932, is slightly more 

 robust, bristling longer on frons, mesonotum and abdomen less metallic, blackish ; face and 

 pleura also more blackish or brownish than cinereous and olivaceous, but structurally there 

 seem to be no marked differences. 



Halmopota hutchinsoni n. sp. 



This is similar to H. c-illosa Becker from northeastern Tibet, but that species is brownish 

 with ])ale tibiae and tarsi, and the dorsocentrals are not developed. Only the female sex of 

 z'illosa is known, but I cannot I )elieve the male before me to be of that species. 



Entirely black; at most the tarsi are slightly paler distally, and the halteres are pale 

 yellow. Uniformly opac[ue glaucous gray, with frons, mesonotum and scutellum blackish in 

 some aspects. 



Head 1.2 longer than high, 1.6 wider than high; in profile the frons is slightly convex, 

 oblique, setting the antennae but slightly above center-line of head and at, or slightly below, 

 that of eyes; ante-ocellar extension about one-half length of head. Kyes obliquely elongate. 

 Frons broad as long, sparingly setulose anteriorly; seven to eight strong fronto-orbitals and 

 a few small setae niesally ; ocellars in line with the anterior ocellus and another pair, as 

 strong, just behind, some slightly weaker setae behind and between' these, also a strong post- 

 vertical pair, b'ace with gibbose medifacies less than one-half width of head, strongly sub- 

 hemispherical, making a distinct sub-horizontal interfoveal hump; four to six facial bristles 

 in a series on lower half; parafacials very broad, about length of second and third antennal 

 segments in width. Cheeks almost one-half height of head in width, with five to six strong 

 dorso-inclinate marginal bristles. Postbucca strongly turgid, setulose. Cilia of posterior 

 orbits of about six strong blistles. First antennal segment distinctly visible, one-half length 

 of second ; second segment broader than long, setulose basally with strong dorsal setae ; third 

 broader than long; arista twice as long as third, with thick pubescent basal three- fourths, 

 gradually attenuating distally to hair-like tip. 



Mesonotum sparingly, strongly, setose, many of the setae may be confused with the 

 macrochaetae ; the three postsutural acrostichals as strong as the dorso-centrals ; the latter 

 arranged 2 to 3 : 3 to 4; interalar series of bristles and setae; 1 humeral; 1 presutural ; 

 2 to 3 notopleurals ; several supralar and postular bristles discernible among the strong setae. 

 Mesopleura strongly setulose with strong ])ostmarginal cilia; sternopleura setulose above; the 

 pleural sclerites otherwise bare. Scutellum triangular, as long as broad, flat or slightly convex, 

 bare, but with two apical and two to four lateral bristles. 



