Neuroptera of the Hawaiian Islands. 177 



it appears to nie well to notice them in the same publication, 

 together with some memoranda made latterly. 



The natural history, and especially the entomology, of 

 the islands is just now being investigated by Mr. R. C L. 

 Perkins, under the auspices of" a special committee ; there 

 can be little doubt that one result of his researches will 

 be a large increase in the number of insects of all orders known 

 to inhabit the islands. 



DO NAT A. 

 Subfam. LiBELLULINA. 



Lejdhemis Blachhurni^ McLach. 



Lepthe^nis Blackbnnii, McLach. Annals, 1883, xii. p. 229. 



Dr. F. Karsch (Berlin, entom. Zeitschr. 1889, p. 373) 

 refers this to Sympetrum. If Lepthemis be practically limited 

 to vesciculosa, F., and the rest of tiie species formerly placed 

 therein be distributed in Orthetrum &c., I see no objection 

 to considering Blachhurai -a Sympetrum; but I do not think 

 it will eventually remain in this latter genus as exemplitied 

 by its well-known European representatives. 



Deielia fasciata^ Kirby. 



Deielia faaciata, Kirby, Trans. Zool. Soc. Lond. xii. p. 3-30, pi. liii. 

 fig. G (1889). 



The type of this insect is identical with Trithemis phaon^ 

 forma dimorph. dispar^ Selys, Ann. Soc. Ent. Belg. xxviii. 

 p. 107 (1883), see also Compt. Rend. Ann, Soc. Belg. xxxii. 

 p. lii (1888), as Mr. Kirby has himself since recognized 

 according to the collection of the British Museum. 



The point to be considered here is the locality of the type 

 specimen, which was indicated as from the Sandwich Islands 

 by Mr. Kirby and which bears a label " Sandw. Isld., 

 Beechey." It thus becomes certain that the insect formed 

 ])art of the collections made during the voyage of the 

 " Blossom," but there is no means of tracing it more 

 precisely. Neither Mr. Blackburn nor any other recent 

 investigator of the Hawaiian Islands has noticed this con- 

 spicuous insect, and I feel grave doubts as to the correctness 

 of the locality indicated on the British Museum specimen. 

 T. phaon and its dimorpliic female [dispar) have been found 

 on the Chinese mainland, in Japan, and in the Loo-Choo 

 Islands. The ' Blossom ' visited the latter islands, and it is 



