476 Mr. C. J. Galian on the 



at its outer side with a short tawny vitta, the otlier spot at 

 the apex ; the underside of the body is covered with a grey 

 pubescence. 



The male of fulvomaculata is almost entirely covered 

 with grey pubescence, the underside being of an ashy-grey 

 •or nearly white colour, the upperside of a darker shade of 

 grey. Wallace correctly indicated these dimorphic forms as 

 sexes of the same species ; he had in fact taken them in 

 coitu. Pascoe, however, while calling attention to Wallace's 

 indication of the true facts of the case, refused to consider 

 the two forms as conspecific, and expressed his belief that a 

 mistake had been made by the insects. I have carefully 

 examined all Pascoe's specimens and all other sp-icimens 

 available, with the result that I could find no females among 

 the grey forms, no males among the black forms with tawny 

 spots and stripes ; and I have further been led to the con- 

 clusion that Pascoe has mixed up under one name — G.griaea, 

 Thoms. — male examples belonging to four closely related 

 species or, as some might prefer to consider them, four 

 clearly marked geographical races of one species, viz., 

 G. arouensis, Thorns., G. fulvomaculata^ Thorns., G. papu- 

 ensis, Gahan (described below), and G. grisea, Thoms. 



These four species are easily distinguished from one 

 another by obvious differences in markings when the females 

 alone are taken into consideration. The males, though so 

 strikingly different from the females, are so much alike that 

 it is not surprising to find that Pascoe placed them all in 

 one species. Of the males which he thus included in 

 G. grisea, Thoms., only those from Ceram and Amboina 

 strictly belong to that species. (The females of this species 

 have been described by Pascoe in his ' Longicornia Malay- 

 ana ' under the name of Glenea interrupta, Thorns. The 

 species described by Thomson under the same name is, 

 however, quite distinct, and, I believe, identical with the 

 species subsequently described by him as Glenea Boisdu- 

 vali*.) The males irom Batchian are certainly males of 

 G. fulvomaculata, Thoms., and those from the Aru Is. males 

 of G. arouensis, Thoms. ; while 1 consider a male from Sal- 

 watty, on account of its locality, to belong to the species or 

 race which I have named papuensis. Though the males of 

 these species are, as I have said, very much alike, slight 



* The confusion of names indicated here seems to have arisen through 

 the misplacement of a label. The specimen sent to me by M. Oberthiir 

 as the type of G. interrupta, Thoms., and labelled as such, belongs to 

 the species described by Pascoe as interntpta, Thoms., while the locality, 

 mea.'surements, aud description given by 1 hnmson do not apply to it. 



