publication of " Jurinean " Genera of Hymenoptera. 375 



etc., are both founded on the " Tenthredo rosae " of Linne. 

 This being a composite species a choice must be made 

 between the two insects, indicated on the one hand by 

 Linne's expression " antennis septemnodiis,'' with which 

 a specimen in his collection agrees, and, on the other 

 hand, by Linne's citation of Reaumur's species and his 

 adoption in a Latinised form of Reaumur's vernacular 

 name. Reaumur's insect is attached to the Rose, the 

 Aihalia is not, so the name rosae should be restricted to 

 Reaumur's species, which, by the way, is congeneric with 

 that selected by Curtis as the Type in 1838 (viz. dimidiata 

 F.), which, however, is not one of Linne's original types. 



Lamarck describes the antennae simply as " filiformes" 

 which tells us nothing, but there can be no doubt that in 

 his view Tenthredo rosae L. meant Reaumur's well-known 

 insect, the " Saw-fly of the Rose," and this selection of a 

 Type, whatever may be the consequences, was apparently 

 legitimate and irrevocable. Tenthredo Jurine is therefore 

 a homonym of Tenthredo L. {see Lamarck), and the group 

 " antennis clavatis " cannot be so called. Lamarck's 

 selection of " Tenthredo rosae L.,F." {i. e. of Reaumur's 

 " Saw-fly of the Rose ") as the Type of Te?ifhredo reduces not 

 only Cryptus Jurine, but also Arge Schrank, and Hylotoma 

 Ltr. to synonyms of that genus. 



Other species have been suggested by other authors as 

 types of Tenthredo, e.g. dimidiata F., by Curtis (1838), which, 

 though congeneric with rosae L. is not a Linnean species 

 and cannot be Type of a Linnean genus. 



Latreille's designation (1810) of scrophulariae L., which is 

 accepted by Mr. Rohwer, is anticipated by Lamarck's 

 selection of rosae L. in January 1801 {scrophulariae L. is 

 the Type of the next Jurinean genus, viz. AUanliis). 



3. 



1-3. Allantus Jm. Erl. Litt-Ztg. 1. 163. 



"Gen. 3 Allantus — Tenthredo : Scrophul. viridis, etc." 



ALLANTUS Jrn. (1801) 



= * Tenthredo (L.) Ltr. 



Type: Tenthredo scrophulariae L. (Crt. 1839). 



Allantus Jm. Erl. Litt-Ztg. 163 no. 3 ( V.1801)— [1. scrophulariae 

 L.; 2. viridis L. ; e^c.]; Pzr. Fn. Ins. Germ. 88-18, 90-9, 91-13-19 

 (1804) : Krit. Rev. Ins. Deutsch. 10, 15 25-40 (1806) • Jrn. Nouv. 



