364 Mr. R. M'Lachlan on Odonata from 



LI. — On Odonata from the Province of Szechuen, in Western 

 China, and from Muupin, in Eastern Thibet. By ROBERT 

 M'Lachlan, F.R.S. &c. 



In the Ann. & Mag. Nat. Hist, for May 1894 I published 

 (pp. 421-436) a notice of Neuroptera from Ta-chien-lu, in 

 Szechuen, received from my friend Mons. Rene Oberthiir. 

 Since then the same kind friend has sent me a further collection 

 from other neighbouring localities in the same province and 

 also from Eastern Thibet. They are principally Odonata, 

 and I do not here propose to notice the few insects of other 

 groups of Neuroptera, neither do I intend to include some 

 few species present in both consignments where there is 

 nothing of interest in connexion with them. In the following 

 pages several new species are described and previously 

 unknown sexes of others, also notes of local and general 

 interest. As previously noticed, the affinities are with Japan 

 and North China. 



Subfam. Libelltjlina. 



Thecadiplaw ardens, M'Lach. 



A series of individuals of both sexes from Moupin agree 

 with those previously described from Ta-chien-lu. Further- 

 more, several specimens taken by my friend Mr. J. J. Walker 

 in the Chusan Archipelago and on the neighbouring coast of 

 China seem also to belong here, independent of the question 

 of specific right or as representing a race of Th. erotica, Selys. 



[N.B. — This appears a fitting opportunity for a short 

 statement with regard to Thecadiplax infuscata, Selys, and 

 Th. erotica, var. fastigiafa, Selys. 



Th. injnscata was originally described by my friend Baron 

 de Selys (Ann. Soc. Ent. Belg. xxvii. p. 90, 1883) from a 

 pair ( J 1 ? ) in my collection, the female of which had lost the 

 end of the abdomen. Th. erotica, var. ? fastigiata, was 

 noticed at p. 91 of the same volume of the l Annales.' In 

 both of these the apical portion of the wings is smoky or 

 blackish. 



In the same ' Annales ' for 1884, p. 40, Baron de Selys 

 doubts whether the individuals described as a variety of the 

 female of erotica under the name fastigiata should not more 

 properly be considered infuscata, and he expresses some 



