410 Mr. R. E. Turner on Fossorial Tlymenopfera. 



all cranial features, essentially as in M. marmota, but size 

 conspicuously less. Ears larger, at least in proportion to 

 general size. Bases of hairs of under surface white, or rather 

 cream-buff, throughout, a narrow line of hairs along the flanks 

 having slaty bases in marmota. Muzzle of skull conical, not 

 contracted in front of the orbits. 



Dimensions of the type (measured in skin) : — 



Head and body 112 mm. ; tail 122; hind foot 16 ; ear 2G. 



Skull : condylo-basal length 29"8 ; greatest breadth 16*8; 

 nasals 12*4 X 2*7 ; interorbital breadth 4'7 ; palate length 15"7 ; 

 breadtli between out{ r corners o^ iiv' 9'2; combined length of 

 three anterior molariform teeth 5. 



Hah. Goya, Corrientes, Argentina. Alt. 600'. 



Ti/pe. Adult male. B.M. no. 98. 8. 19. 9. Original 

 number 10. Collected 25th July, 1895, by R. Perrens. 

 Presented by Oldfield Thomas. Five specimens examined. 



This is the Marmosa which I have previously* identified 

 as Azara's " Micour^ ^ queue longne,'^ the basis of Oken's 

 marmota and Desmarest's grisea. But a study of two 

 specimens from Paraguny (one from Sajnicay and the other 

 from Asuncion) shows that the Paraguayan form — topotypical 

 of Azara's description — is decidedly larger than that from 

 (jorrientes, and I therefore now describe the latter as new. 



The Sapucay specimen — a female — has a condylo-basal 

 length of 33'7 mm., three anterior molariform teeth 5*5, and 

 other measurements in proportion. Ears, however, only 

 25 mm. 



XLTT. — Notes on Fossorial Hymenoptera. — YIII. 

 By Rowland E. Tukner, P.Z.S., F.E.S. 



On some new Species from Africa. 



The types of the species described below are all in the 

 British Museum. Several of the species are from the 

 material collected for the African Entomological Research 

 Conimissiou by ^Ir. S. A. Neave, and others from the tine 

 collection made in the JNIid Zambesi districts by the late 

 Air. Oscar Silverlock. 



* Ann. & Maor. Xat. Hist. (0) xiv. p. 184 (1804), and (D x. p. 1-58 

 (1902). 



