CAMPION— ODONATA 445 



The 16 lobed females, therefore, represent as much as 80 % of the total number of 

 females collected (20). 



The ?? b and d are alike in coloration ; and, so far as can be judged from the material 

 which is available, there are also no colour differences between $a and $e. 



The synonymy of this species is in an unsettled state, and the identity of Rambur's 

 pygmcea (1842) is very uncertain. It has therefore been deemed advisable, for the purposes 

 of this paper, to designate the Seychellean insect as the pygmcea of the Selys-Synopsis, 

 where there is a very good description, indicating the structural characters of both sexes. ■ 



The distribution of pygmcBct is astonishingly wide, extending as it does from the 

 Seychelles on the West to Australia on the East : such a distribution, unaccompanied 

 by local modification in different parts of the range, suggests recent and rapid dispersal 

 of the species. 



25. Teinohasis alluaudi (Martin). 



Telebasis cdluaudi Martin, Mem. Soc. Zool. France, ix. p. 110 (1896). 



Loc. Seychelles. Silhouette: 1 ^, Mare aux Cochons, IX. 1908 ; 1 ^, Pointe Etienne, 

 low cultivated country, IX. 1908. Mahe : 2 $, Mare aux Cochons district, about 1500 feet, 

 I.— II. 1909. 



Monsieur Rene Martin makes the following observations respecting this species (op. 

 cit. p. Ill) : — " Parait assez commun a Tile Mahe, oil le R. P. Philibert a pris un certain 

 nombre de males et de femelles. Cette espece, qui n'a jamais ete observ^e qu'a Mahe, 

 est la seule Telehasis qui ne soit pas de I'Asie tropicale et de I'Oceanie. Toutes les autres 

 Telebasis habitent les Philippines, les Moluques, Celebes, la Nouvelle-Guinee, Singapore. 

 Les especes les plus voisines de T. alluaudi sont la T. lorquini des Moluques, et la 

 T. rufithorax de I'lle d'Obi." It will be observed that the present collection contains 

 specimens from Silhouette as well as from Mahe. It also appears that the species is now 

 known from Madagascar, for the British Museum possesses a female from the East of that 

 island, presented by M. Martin in 1899. 



I follow Mr W. F. Kirby in retaining the term Telebasis for the New World genus 

 which De Selys renamed Erythragrion ; and for the Oriental genus to which the species 

 under consideration belongs I adopt the name of Teinobasis which Mr Kirby has proposed 

 for it. This course has been taken, in dealing with American Dragonflies, by Prof. P. P. 

 Calvert and Mr R. A. Muttkowsky, and the reasons for doing so appear to be adequate. 



GENERAL CONCLUSIONS. 



The collection from the coral island of Assumption might have been made on the 

 mainland of Africa without occasioning any surprise, as it consists entirely of LibelIulin£E 

 belonging to Ethiopian species. The few Dragonflies from Aldabra, another coral atoll, 

 might also have been obtained in Africa. 



When we come to the granitic islands constituting the Seychelles Archipelago, 

 however, we find the number of purely African species i-educed to two, viz. lihyothemis 

 semihyalina and Ceriagrion glabnini. Three others are common to the P^thiopianand Oriental 

 regions: these are Tramea liinbata, Ilemianax ephippiger, and Isclinnra senegalensis. 

 The single Corduliine, at one time thought to be peculiar, is now considered to be 



