On Fossil Arthropods in the British Museum. 541 



This small nortliern species has tlie ortliodont incisors of 

 ceroinus and the narrow clioui se of mitchelli, but is clearly 

 distinct from both. It seems to be the only Notomys that 

 occurs on the eastern coast of Australia, all the others being- 

 from west of the Dividing Range. 



7. Notomys cervinus, Gould. 

 Hapalotis cervinus, Gould, P. Z. S. 1851, p. 127. 



t^ize small ; colour usually pale. Skull of about the size of 

 that of iV. mitchtlU, but the palatal foramina larger and more 

 open, the mesopterygoid fossa broader anteriorly, the bullae 

 t>m,iller and the incisors orthodont, index about lb° to 77°, 

 those of xV. mitcheUi being decidedly opisthodont. 



Hub. The desert-region of Central Australia. Type from 

 about 29° 6' S., 141° E. 



Type (lectotype). B.il. no. 53. 10. 22. 7. Collected 26tii 

 March, 1815, by Capt. Charles Sturt. From the Gould 

 Collection. 



This species and N. vdtchelli occur together over a large 

 area of Central Australia, and are often found iu the same 

 localities. 



Finally, Gould's " Hapalotis condilor" is ))ossIbly a 

 member of this genu-<, but there is no specimen of it in the 

 British Museum, and species belonging to several genera 

 were included in what he called " Hapalotis.'''' 



There is, however, the skull of a quite distinct Notomys in 

 the collection, but, pending the discovery of any authentic 

 specimen of conditor, I will neither definitely assign it to that 

 species, nor, on the other hand, describe it as new. 



LIl. — Fossil Arthropods in the British Museum. — VII. 

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



A NEW lot of Burmese amber, presented to the Museum by 

 Mr. Swinhoe, contains only one insect which I am prepared 

 to describe, though there is a very interesting Psychodid fly 

 which I hope Mr. Edwards will find time to investigate. 

 The one insect is, however, of unusual interest, being a bee. 

 It is closely allied to a species occurring in Sicilian amber, 

 which is Middle Miocene. The other fossils now described 

 are from the Gurnet Bay Oligocene. 



