412 R- OSTEN SACKEN 



Is very like A. azurea Gerst. from Ceylon (the only species of 

 the old continent hitherto described) , but seems to differ in the 

 coloring of the vertex and in the position of the silvery stripes 

 of the thorax (if I understand Mr. Gerstaecker's description). 



(?) Salduba gradiens Wk. J. Pr. Lin. Soc. VII, 203! (Mysol). 



One </; Ramoi, N. Guinea, Febr. 1875 (Beccari). 



Salduba singular is, areolaris:, venosa j, as well as gradiens look 

 very much alike; but the description of the last one comes 

 nearest to the specimen before me. The type in the Br. M. 

 however, has no yellow at the root of the wings, and hence 

 the identification is not quite certain. 



(?) Salduba singularis Wk. J. Proc. Lin. Soc. Y, 272 (Batchian). 



One </•; Ramoi, N. Guinea, Febr. 1875 (Beccari). 



Seems to differ from the former in the color of the legs (less 

 white at the root of hind tarsi), the much more distinct spines 

 on the hind femora etc. Nevertheless the specimen is too imper- 

 fectly preserved to admit of any certainty. 



Ptilocera smaragdina Snellen v. Vollenh. Mem. Entomol. etc. 

 I, 92, 1857. 



1 have about 30 specimens before me , most of them from 

 Celebes, three from Ternate, three from N. Guinea and one from 

 Amboina. I am unable to make out that P. amelhystina S. v. 

 V. is a different species. The specimens that look most smarag- 

 dine from one point of view, will look amethystine from ano- 

 ther. In two of the specimens (both females, one from Amboina, 

 the other from N. Guinea) the greater part of the anal cell 

 and a portion of the fourth posterior are almost hyaline, while 

 the interval between the anal cell and the costal margin is 

 much darker brown than the distal half of the wing. The ame- 

 thystine reflection of these specimens is a little mere perma- 

 nent ; their size is a little larger than the average of the other 

 specimens. They may belong to amethystina v. Voli., although I 

 am by no means satisfied about their specific distinctness. 



