360 T. D. A. Cockerell — Arthropods in Burmese Awiher. 

 Art. XXX. — Arthropods in Burmese Amler ; by T. D. A. 



COCKEKELL. 



In the August number of this Journal for 1916, I recorded 

 the occurrence of insects in Burmese amber, obtained from 

 beds of Miocene age. Mr. Swinhoe has since sent additional 

 material, and the species found appear on the whole remarkably 

 primitive. They are, indeed, related to living forms ; but in 

 practically every case to precisely those forms which we have 

 thought of as ancient, as remnants of a very old fauna. So 

 far, no ants, bees or wasps have been found ; the Hymenoptera 

 are Evaniids and Bethylids. The Hemiptera so far examined 

 belong to the archaic family Enicocephalidse. It is too early 

 to express a positive opinion, but it is dilficult to avoid a strong 

 suspicion that the amber, though found in Miocene clay, is 

 actually very much older, conceivably even Upper Cretaceous. 

 The species described in the present paper all come from a 

 verv large block which has been cut into slabs ; they therefore 

 all lived at the same exact time and place. 



PSEUDOSCOEPIONES. 



JElectrohisium new genus (Obisiidae). 



Cephalothorax remarkably long and narrow ; apparently no 

 eyes ; pedipalps very long and slender, with large trochanter, 

 stout femur, very slender tibia, and long slender hand with 

 bulbous base ; first pair of legs with femur very stout, the 

 others ordinary, but all the legs quite long ; abdomen broad 

 and rounded, the scutes entire ; body and appendages not hairy. 

 Type the following. 



Electrohisium aciitum new species. 



Wood brown ; abdominal segmentation marked by darker 

 lines. The following measurements are in microns : Length 

 lOiO ; width of abdomen 530 ; pedipalp with femur 304 long, 

 tibia 256, and hand 368 ; first legs about 496 long, second the 

 same, third about 544, fourth extending about 770 beyond 

 margin of body. 



Burmese amber, from K. C. J. Swinhoe. In the same slab 

 as type of Electrofoemis, but on opposite side, and close to 

 edge of thickest part. This is quite unlike the pseudoscor- 

 pions described from Baltic amber, though there is a slight 

 superficial resemblance to Chelifer ehrenbergii. 



Thysanura. 



Lampropholis (?) biirmiticus new species (Lepismatidae). 



Male. Length 3™"" (not counting cerci), parallel-sided, the 

 form as in Lampropholis dubia Koch and Berendt(from Baltic 



