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THE ENTOMOLOGIST. 



Vol. LII.] SEPTEMBEE, 1919. [No. 676 



TWO INTERESTING INSECTS IN BUEMESE AMBEE. 



By T. D. a. Cockkrell. 



There are certain groups of insects of apparently primitive 



type, represented by comparatively few living species, scattered 



widely over the earth. Such forms attract the attention of all 



students of insect evolution, and give rise to many speculations 



concerning their origin and history. Two such insects are 



represented in a small quantity of Burmese amber, just received 



from Mr. R. C. J. Swinhoe, of Mandalay. The specimens will be 



^placed in the British Museum, to which they have been presented 



■ »lDy Mr. Swinhoe. The amber occurs in Miocene clay, and is 



doubtless at least a million years old. It was, however, washed 



into the clay from other beds, and may be very much older than 



r Miocene. 



LEPIDOPTEEA. 

 MicROPTERYGiD.E (Order Zeugloptera, Chapman, 1916). 



Mici-opterijx pervetus, n. sp. 



Length a little over 2 mm., anterior wing about 2-3 mm. ; body 

 and appendages dark brown ; wings pale brown, hyahne, without 

 evident scaling (probably denuded) ; eyes very prominent, much more 

 convex than in Mnemonica ; maxillary palpi elongate, so far as visible 

 similar to those of Mnemonica ; wings very similar to those figured 

 by Comstock's ' Manual for the Study of Insects,' p. 216, but E^,, runs 

 to the costa, as in Comstock's figure of Mnemonica (" The Wings of 

 Insects," p. 314) ; the course of the media, except the apical branches, 

 cannot be made out. The five branches of the radius all end 

 separately ; the two anals run parallel, very close together. The 

 frenulum, with four well-developed bristles, agrees with Tillyard's 

 recent figures (' Proc. Linn. Soc. N.S.W.,' 1918), and the humeral 

 lobe of the hind wing is very distinct. 



ENTOM. — SEPTEMBER, 1919. S 



