26 j\Ir. H. Campion on Dragonflies from 



tlie Hawaiian Islands has noticed tliis conspicuous insect/^ 

 With the exception of Diplacodes bipunctata, Braner, and 

 Trithemis annulaia, Beauv,, ^lie other drag-ouflies labelled 

 in the same way also belong to well-known Asiatic species, 

 and Pantala flavescens is the only one among them known to 

 be a Hawaiian insect. 



The Beechey dragonflies which I have so far succeeded in 

 tracing in the British Museum are the following : — 



Labelled as coming from " Loo Choo " — 



Iscknura aurora^ Brauer, \ $ . 



Diplacodes bipunctata Brauer, 1 ? , evidently belonging 

 to this species. 



CrocotJiemis servilia, Drury, 1 ^ . 



Pantala flavescens, Fabr., 1 ? . 



Labelled as coming from the ^^ Sandwich Islands" — 



Orihetrum albistylum speciosum, Uhler, 1 J . 



Diplacodes bipunctata^^rsmev, 2 ? . 



JJeieliu phao7i, Selys, I ? . 



Trithemis f estiva^ Ramb., 1 ? . 



? T. nnnulafa, Beaav., 2 (^ . 

 ■ Tholymis tillarga, Ya.hr., 1 (^ . 



Pantala flavescens, Fabr., 3 cT , 4 $ . 



The female Trithemis has the right hind wing in a terato- 

 logical condition. A similar female, but presumably with 

 normal wings, labelled in a similar way, passed from the 

 British Museum into De Selys^s collection, where it received 

 the manuscript name of Trithemis nereis. Both specimens 

 were carefully studied by Ris, who, suspecting that they 

 really came from Loo Choo, with Deielia phaon, referred 

 tiiem, provisionally, to the Asiatic species Trithemis festiva. 

 He also pointed out that T. festiva was known to occur as 

 near to Loo Choo as Formosa (Coll. Selys, Libell. p. 799, 

 1912). The identification of the British Museum specimen 

 as T. festiva is probably correct, in spite of the large ptero- 

 stigma and of the fact that the tips of the three normal 

 wings are hyaline, and not clouded with brown, as appears 

 to be usual in females of that species. 



The two broken males, labelled " Sandw. I., Beechey/' 

 are in the form of the hamule and the redness of the vena- 

 tion more like T. annulata than T. festiva. In all four hind 

 wings Cw] has migrated upwards upon the outer face of the 

 ti-iangle, icmi»iding one of the genus Diplacodes, although 

 the other characters are those of true Trithemis. The 

 unusual condition of Cuiy it may be remarked, is exhibited 

 also by the female Trithemis discussed by Ris. 



