46 ROEBUCK : ON YORKSHIRE ANTS. 



these places, as their cocoons are greatly in demand for the 

 feeding of game. 



. nigra, . 1 -y^^j^gi^gj^ district in July 18^2 (F. 



^ „ ^ ' ( Smith, Zool. X. 3626), 



F. flava, De Geer ) ^ 6 j 



Myrmica ruginodis, Nyl. Wakefield in July 1852 (F. 

 Smith, Zool. x. 3626). Also see under next species. 



M. scabrinodis, Nyl. Speakir^ of the immense pre- 

 ponderance of social over solitary hymenoptera in Yorkshire 

 as compared with the Southern counties, Mr. Fred. Smith 

 {Zool. 1852, X. 3625-6) states as the result of his collect- 

 ing near Wakefield in July 1852, that "In stony fields on 

 hill-sides I found colonies of Myrmica rubra in such immense 

 numbers that were I to say they occurred under every stone, as 

 applied to fields in general, I speak strictly according to truth." 

 And again (B, Foss. Hym. 1858, p. 3) he says: — "On the hilly 

 fields in Yorkshire I observed a colony of this, or the preceding 

 species \_M. ruginodis], under almost every stone." 



M. Isevinodis, Nyl. "Taken near Woolley. F. Smith" 

 (in litt.) Wakefield district in July 1852 (F. Smith, Zool. x. 3626). 



Stenamma Westwoodii, Steph. Several specimens at 

 Scarborough in 187 1 by R. Lawson (Smith, Ent. Ann. 1872, 

 p. 98). Resides in the nests of Foi-mica rufa (F. Smith in litt.) 



Myrmosa melanocephala, (Fab.) Near Wakefield in 

 July 1852 (Smith, Zool. x. 3626 and B.F.H., 1858, p. 44). 



Tribe FOSSORES. 

 These insects are fully monographed by Shuckard ('Essay 

 on the Indigenous Fossorial Hymenoptera,' 1837) and F. Smith 

 ('Catalogue of British Fossorial Hymenoptera, Formicidse and 

 Vespidae in the Collection of the British Museum,' 1858). 



The number of British species in 187 1 was 119, distributed 

 in 34 genera and the families Scoliidce, Sapygidce, Poinpilidce, 

 Sphegidce, Larridce, Nyssonidce, Crabrojiidce, and Pliilanthidce, as 

 enumerated in Mr. Smith's Catalogue of British Aculeate 



Trans.Y.N.U., 1877. Series D 



