Mr. M. Burr — Notes on the Forficularia. 49 



This species is apparently allied to L. grandis, Borm., but 

 the form of the forceps of the male is quite distinctive, 

 possessing many features in common with those of certain 

 Anechura — for instance, the sinuation in a vertical plane and 

 the thickening at the anteapical tooth ; it is, perhaps, worthy 

 of note that another somewhat similar species at present 

 ranged in Labia, namely L. papua, Borm., is recorded 

 from New Guinea. Perhaps a new genus will be required 

 eventually for their reception. 



T/ie Genus Strongylopsalis, Burr. 



In 1880 de Bormans described a female earwig from Peru 

 under the name Labia cheliduroides ; in 1883 he described a 

 male from Mexico as being that of the same species. Now 

 these insects are incapable of flight, and it is to be expected 

 that the specimens from Mexico and those from Peru are 

 specifically distinct. It ap])ears now that there is no doubt 

 that this is the case. In 1900 I sent de Bormans a pair of 

 StrongylopsaUs inca from Peru. On April 25th, 1900, he 

 replied that my specimens were undoubtedly identical with 

 his Labia cheliduroides. On June 7tb of the same year * he 

 wrote withdrawing this oi)inion, remarking that my specimens 

 were undoubtedly distinct, so I accordingly published the 

 description of S. inca, which was then in manuscript. 



I have since compared my types of S. inca with syntypes 

 of L. cheliduroides ? , and they are indistinguishable : 

 de Bormans had first compared the females only, and was 

 therefore correct in his first opinion ; later, on comparing the 

 males, he was instantly struck by the entire dissimilarity of 

 the forceps, and so altered his opinion. The undoubted 

 explanation of this confusion lies in the fact that his males 

 from Mexico were distinct from his Peruvian females. 



It is therefore necessary to regard Strongylopsalis inca, 

 Burr, from Peru, as synonymous with Labia cheliduroides, 

 Borm., ? , from Peru, while Labia cheliduroides, Borm., ^ , 

 from Mexico, is a distinct species and requires a new 

 name. 



The genus Strongylopsalis was originally placed by me 

 near to Carcinojyhora , but the structure of the feet and of the 

 antennje show without doubt that it is more closely allied to 

 Labia, from which it is at once distinguished by the sharp 

 keel of the elytra. 



* This was the last letter I ever received written in his owu hand- 

 writing ; a few weeks later my old friend was struck down by the illness 

 •which 80 soon proved fatal. 



Ann. db Maq. X. Hist. Sor. 8. ]'ol. i. -k 



