T. D. A. Cocker ell— Arthropods in Burmese Amher, 367 



der basally, gradually widening to a thick apex, with one long 

 and one short spur ; hind tarsi longer than tibiae, the basal joint 

 not curved ; middle legs apparently much smaller than the 

 others ; wings ample, minutely hairy, venation not appreciably 

 differing from that of Mesitius. Abdomen not preserved, but 

 enough is left to show that the petiole was short. The sub- 

 median cell is open at its lower apical corner, and its apical side 

 is very oblique. Type the following species. 



BethyUtella cylindrella new species. 



Head and thorax black ; legs, antennse and mandibles fer- 

 ruginous. Head about 560 microns long and 320 broad (in a 

 sublateral view) ; thorax about 880 microns long and 288 broad. 

 Anterior tibia about 240 microns long, its tarsus fully 320 ; 

 length of mandibles 192. Burmese amber, from Mr. R. C. J. 

 S win hoe. In the same piece as Electrofmnus gracilipes^ and 

 very close to it. A genus of Bethylinse related to Mesitius^ 

 but distinct by the formation of the head and thorax. In the 

 long prothorax it resembles Palceohethylics of Brues, from Bal- 

 tic amber, but the venation is much more reduced. 



DlPTERA. 



Burmitempis new genus (Enipididse). 



Apparently nearest to Microsania Zett. Minute flies with 

 broad head, rather narrow thorax with subparallel sides, and 

 oval abdomen ; eyes widely separated; antennse with first joint 

 broad and rounded, second narrow and hairy, third very large, 

 oblong-oval, obtuse at end, hairy, with a very long simple 

 arista ; wings large and broad, extending beyond abdomen ; first 

 basal cell long, emitting three veins from apex; second poste- 

 rior cell somewhat contracted apically ; no discal cell ; second 

 basal small and narrow, its long axis nearly vertical, and its 

 apex considerably basad of end of first basal ; anal larger than 

 second basal, very obtuse apically, its outer margin not in a 

 line with end of second basal ; anal angle of wing projecting 

 (about as in Syneches) ; lower margin of wing at base with 

 long hairs ; legs long, ordinary, with only very short hairs, 

 femora not incrassate ; male genitalia relatively small and sim- 

 ple, much as in Rhainjphomyia ungulina Lw., from Baltic am- 

 ber. Halteres enormous, the knob very long and thick. 

 Type the following. 



Burmitempis halteralis new species. 



Black, including legs and knobs of halteres. Wings hya- 

 line. The following measurements are in microns : length 

 about 1040; length of wing 750; breadth of wing about 370; 



