On Fossil Arthropods in the British Museum. 211 



3, Abdomen mainly red, stigma pale . .' chaprmsis, CklL 



Abdomen with much black, stigma dark 4. 



4, Larger ; wings dusky , chalcea, Ckll. 



Smaller; wings clear immsi, Ckll. 



5, Abdomen with white tegmuentary bauds perconciima, Ckll. 



Abdomen with bands of pale ochreous tomentum. bur mica, Ckll. 



XXV. — Fossil Arthropods in the British Museum. — IV. 

 By T. D. A. COCKERELL, University of Colorado. 



The insects described below were sent from Burma by 

 Mr. R. C. J. Swinhoe, who has presented them to the British 

 Museum. Mr. Swinhoe now writes that the amber mines 

 are not in Burma proper, but in " what is called the unad- 

 ministered tracts." The Arthropods so far described from 

 this amber may be summarized as follows : — 



Diplopoda. 

 Polyxenidae, 1 



A R AC HN I D A. 



Pseudoscorpiones, 2, 

 Ckeyletidae, 1. 



Insecia, ' 



Thysanura. 

 Lepismatidft?, 1. 



ISOPTERA. 



Termitidse, 2. 



Erubiida?, 1. 



Dermaptera, 1. 



corrodentia. 

 Psocidae, 2. 



Trichoptera, 1, 



Lepidoptera. 

 Micropterygidae, 1. 



Hymenoptera, 

 Evaniidae, 3. 

 Bethylidse, 4. 

 Trigonalidae, 1. 



HOMOPTERA. 



Fulgoridae, 1. 

 Aleyrodidae, 1. 



Heteroptera. 

 Enicocepkalidaj, 4. 



DlPTERA. 



Mycetophilidae, 2. 

 Cecidomyiid;*, 1 . 

 Chironomidae, 1. 

 Psychodidae, 1. 

 Empididae, 2. 



Coleoptera. 

 Buprestidae, 1. 

 Elateridas, 1. 

 Pedilidae, 1. 

 Rhipiphoridae, 1, 

 Dermestidae, 1. 

 Ipidae, 1. 



Total, 40 *. 



* Not a trace of an ant can be found in any of the materials. Frag- 

 ments of Blattidae o.ccur, but not sufficient for description. There are 

 also small spiders. 



14* 



