514 rohwer: notes on sawflies 



matus dyari as this species. The thorax, however, also suggests that 

 it may be Pachynematus but in that genus there is nothing which 

 monochroma can be; P. apiceae Rohwer comes nearest. Until what 

 remains of the type has been carefully compared with a number of 

 different species the standing of monochroma Norton must remain 

 uncertain. 



Tenthredo (Cladius) isomera Harris, Cat. Ins. Mass. 583, nomen 

 nudum. 1835. 



Described by Norton in 1861. The type is a rather dirty female 

 under no. 185 in the Harris collection. In 1892 Riley synonymized 

 Norton's species with the common European species, Cladius pectin- 

 icornis (Foucroy), but a recent study of American and European ma- 

 terial demonstrates that the two are not the same and makes it neces- 

 sary to reinstate Norton's name. The differences between the two 

 forms are discussed in detail in a paper on the Cladiinae now in press. 



Tenthredo (Lyda) maculiventris Harris, Cat. Ins. Mass. 583, nomen 

 nudum. 1835. 



Described by Norton in 1869. There is no specimen of this species 

 in the Harris collection and there seems to be no doubt that the type 

 is lost although it is possible that the paratype is in the Cambridge 

 Museum. MacGillivray® recognizes this species and places it in 

 Itycorsia. 



Tenthredo (Lyda) ochracea Harris, Cat. Ins. Mass. 583, nomen 

 nudum. 1835. 



Described by Norton in 1869 and now placed in the group Itycorsia. 

 Not in Harris collection but a specimen from "Mass." in Academy of 

 Natural Sciences of Philadelphia is undoubtedly the type. 



Tenthredo (Lyda) rufofasciata Harris, Cat. Ins. Mass. 583, nomen 

 nudum. 1835. 



Described by Norton in 1869 and now correctly treated by Mac- 

 Gillivray^ as Anoplolyda. The type is somewhat imperfect and is 

 no. 382, Harris collection. Paratypes are in Philadelphia. The type 

 locality is, according to Harris' manuscript list, Dublin, New Hamp- 

 shire. 



Tenthredo (Lyda) calceata Harris, Cat. Ins. Mass. 583, nomen 

 nudum. 1835. 

 This has never been described. 



6 Conn. Geol. Nat. Hist. Survey Bull. 22: 2,2>. igi?- 

 ^ Conn. Geol. Nat. Hist. Survey Bull. 22: 41. 1917- 



