THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTOEV 



[EIGHTH SERIES.] 



" per litora spargite museum. 



Naiades, et circiun vitreos considite fontes : 

 PoUice virgineo tuneros hie carpite flores : 

 Floribus et pictum, divse, replete caniatrum. 

 At vos, o Nymphse Craterides, ite sub undaa ; 

 Ite, recurvato variata corallia trunco 

 Vellite muscosis e rupibus, et mihi conchas 

 Ferte, Deae pelagi, et pingui conchylia succo." 



N.Parthenii Gianneffasi, Eel. 



No. 1. JANUARY 1908. 



I. — The Genera and Subgenera of the Sciuropterus Group, 

 with Descriptions of Three new Species. By Oldfield 

 Thomas. 



The old genus Sciuropterus, as already indicated by Forsyth 

 Major and Heude, contains a very heterogeneous collection of 

 forms, and a study of them brin<rs me to the conclusion that 

 they should be divitled into at least six genera. Heiide 

 has already erected the genus Trogopterus for the remark- 

 able Chinese species described as Pteromys .vanthipes by Milne- 

 Edwards. 



Upper cheek-teeth subequal, square, with low ridges, the 

 usual high internal antero-posterior ridge almost obsolete as 

 a ridge, being represented by two separate cusjis, to which 

 respectively tlie two usual transverse ridges run directly across 

 parallel to each other, instead of (as in Sciuropterus) con- 

 verging and nearly meeting on the external slope of the 

 higljest part of the main antero-posterior internal ridge. As 



An7i. cC- Mag. N. Hist. Scr. 8. Vol. i. 1 



