Some Palaearctic species of Cordulegasfer. 281 



C. charpentieri, de Selys, Odonates de I'Asie Mineure (Ann. 

 Soc. Ent. Belg., xxxi,"p. 32, 1887). 



Regarding C. pictus, Selys, I can come to no definite 

 conclusion. It must remain doubtful without an examina- 

 tion of the $ type, which may belong to one of the other 

 recognised species. De Selys made various attempts to 

 find a suitable partner for it, with not very satisfactory 

 results as the following notes show. 



1854. C. pictus, Syn. Gomph., No. Ill, p. 87, $ of unknown 



origin, doubtfully from India. 

 1856. C. bidenfatus race pictus, Mon. Gomph., p. 3-10 or 600 ; 

 ^ from Broussa ; 9 probably the above. 

 = 1873, (J C. bidentatus race ayiatolicus, Syn. Gomph., 



3rd Addns,, p. 65. 

 = 1887, ^ C. bidentatus (very probably), Odonates de 



I'Asie Mineure. 

 = 1887, $ C. pictus, Odonates de I'Asie Mineure. 

 1873. C. pictus, Syn. Gomph., 3rd Addns., p. 43, Caucasus, 

 etc. 

 = 1856, C. annulatus race intermedins, Mon. Gomph., 



p. 336 or 596 from Tuscany and Dalmatia. 

 = 1887, C. charpentieri, Odonates de I'Asie Mineure, 

 from Caucasus. 

 1887. C. pictus, Odonates de I'Asie Mineure, represents the 

 original 5, and q (^ of C. annulatus race intermedius 

 from Tuscany and Dalmatia. But I believe the 

 last-mentioned race = C. charpentieri of the Odon- 

 ates de I'Asie Mineure, as represented by the 

 Caucasus (^ (^, with which, under the name of C. 

 pictus, de Selys himself had associated the race 

 intermedius of C. annidatus in 1873. 



Cordulegaster bidentatus, Selys. 



The principal differences between this species and the 

 northern form of C. annulatus are given by de Selys as 

 follows — 



cJ. 1st. The black line of the front is a little longer and more 

 constant, slightly upturned at the ends ; it is limited by the frontal 

 crest, while in annulatus it is placed a little lower. 



The excavation of the f rons is a little differently constructed ; the 

 base of the front before the ocelli is less margined with black. 



2nd. The labrum is always markedly margined with black on the 



