270 THE ENTOMOLOGIST. 



OBSERVATIONS ON THE SPECIES OF THE GENUS 

 CALLIMENUS, Fischer de Waldheim (ORTHOPTERA. 

 BRADYPORID^). 



By A. M. Shuguroff (Odessa). 



(Concluded from p. 251.) 



Returning to a brief revision of the species of the genus 

 Callimenus, we are at once struck with the impossibihty of deter- 

 mining the greater number of specimens which fall into the 

 hands of entomologists by means of the synoptical tables at pre- 

 sent in existence. This is partly explained by the fact that the 

 form of the pronotum varies to a remarkable extent in Calli- 

 menus, and also the number of keels or ridges on the hinder 

 margin of the abdominal segments. This is most unreliable. 

 It is hard to find two specimens exactly agreeing in colour. 

 The variation, too, in the size of the tuljercular ridges on the 

 segments of the abdomen has been sufficiently noticed. 



But apart from this individual variability* observed in mor- 

 phologically equivalent individuals, in Callimenus, malformation 

 (monstrositas, Missbildung) is, evidently, also observed ; at least, 

 it is particularly to this kind of variation that I am inclined to 

 attribute such an incident as, for instance, I have observed in a 

 male in my own collection, when the right mesosternal lobe is bifid 

 at the extremity, although in the diagnosis these lobes should be 

 described as " magis acuminati." 



The comparison of the same morphological peculiarities in 

 different species of the genus Callimenus enables us to draw up 

 the table given on p. 178, f the material for which was afforded 

 by the descriptions of Brunner, the collection of the Oxford 

 Museum,! and the personal observations of the author of this 

 article. 



In the genus Callimenus, erected by the learned Russian, 

 Fischer de Waldheim, in his letter to Serville in 1833, in the Ann. 



'■'•'■ In the use of this term I follow the interpretation of Duncker, " Die 

 Methode der Variations-Statistik " (' Arch. f. Entin.-mech. der Organism,' viii. 

 (1899) ). Hugo de Fries, for individual variation, employs the term " fluctu- 

 ation," but Prof. Shimkevich (Hor. St. Pet. N. H. Soc. xxsv. 4, pp. 28-29 

 (1906)) calls it "flexibility." 



f [That is, of course, a reference to the pagination of the ' Revue ' in 

 which this article originally appears. — M. B.] 



I Mr. Burr kindly consented to allow me to publish the synoptical table 

 which was drawn up by him ; at the same time he gave me the information 

 about the female of G. montandoni. Burr., the description of which had not 

 previously been published. For this friendly assistance I have pleasure in 

 expressing to him my sincere thanks. 



[This is a mistake on the part of M. Shuguroff. The material is in my 

 own collection, at present stored in the Hope Museum by the kindness of 

 Professor Poulton. Hence the error.— M. B.] 



