198 [February, 



cliai'iicter of anal is), I cannot find any with the anus white above. 

 Dours, in hia " Catalogue Synonymique des Hymenopteres de France," 

 states that stramineipes feeds in the larval condition on the alder ; but 

 whether he actually bred it, or merely suspects from having found the 

 perfect insect on that plant, that it feeds thereon, I cannot say.* 



Selandria socia, KL, is merely an aberration of ^S*. serva. 



Synopsis of British species of Solandrln. 



A. — Abdomen luteous. 



a. — Eyes nearly toucliing the base of mandibles ; labrum and base of 

 antennae black. 

 3rd antenna! joint not much more than double the length of 



4th ; 2nd sub-marginal nervure not interstitiate. — ■\serva. 

 3rd antennal joint more than double the length of 4th ; 2nd 

 sub-marginal nerTure interstitiate. — *grandis. 

 b. — Eyes distinctly distant from base of mandibles ; labrum and base of 

 antennce luteous. — -Jlavescens. 

 B. — Abdomen blacli. 



a. — Tegulaj white. — -stramineipes. 

 b. — Tegula) black. 



Legs yellowish. — morio. 



Legs black and white. — aperta. 



I was not aware of Selandria aperta, ITtg., Iteing a T5ritisli insect 

 until 1 observed it (named) in the collection of Mr. McLacblan, who 

 took it in the London district. 



Tenthredo disj}ar, Kl. — I have long been in doubt as to whether 

 T. dispar, Kl , was a distinct species, or merely a variety of T. atra, as 

 bad been suggested by Hartig ; and until this year I was unable to 

 come to any definite conclusion regarding the matter ; but I now know 

 from my knowledge of the life-history of dispar that it is a good 

 species. 



T. atra, according to F. ]iudow, Stett. cut. Zeit., xxxii, p. 386, 

 says: " Ihre Eier anfangs Juli in dicke Blattrij)pen der Erlen, muth- 

 masslich, aber nicht allein in diese." Details regarding the after 



* It may be useful to point out some errors about the habits of saw-flies, &c , in this Cata- 

 logue of Duurs. Emphytus carpini is stated to feed as a larva on t-'nrbus t(ucuparia^ instead of 

 Geraniiuii loOtrlianum : Fenusa pumila under the dead leaves of oak instead of on birch (c/. 

 Cameron, Proc >'at. Hist Soc of CJla.sgow, li, p. 7); MonophaUtuis alliipes, " sur les chatons des 

 saules," instead Of on Kanunculm: ,• Athalia s/jinarum and A. rosiv on roses instead of on various 

 Cruci/tra,- Taxonuit ayilis on '• les buissons, les gazons " instead of on Polygonum. Hoplocampa 

 xylostei, Gir., is mentioned twice — as a IloploaDitpa and as a Selundria ; and among the Cynipidie 

 Triyvnctfj'is meyapltra, Vz., and crustnlis, Htg., arc given as two distinct species, instead of the 

 latter being regarded as a synonym of the former.— P. C. 



t 1 believe that these two are quite distinct ; nevertheles.s, intermediate forms occur which 

 are not ea.sy to class with the one or the other, so thai the question whether they are to rank as 

 species or v.irieties can only be definitely .settled I'y Weeding both the forms. -P. C. 



