244 Miscellaneous. 



This circumstantial account removes all doubt respecting 

 the true home of this shell. Notwithstanding its close affinity 

 to H. fringillaj the remoteness of the habitats of the two 

 species and the extreme isolation of the Sandwich Islands are 

 sufficient reasons in themselves to determine the specific dis- 

 tinctness of these snails. 



MISCELLANEOUS. 



On the Structure of the Loiver Jaiu in Ehizodopsis and E-hizodus. 



To the Editors of the Annals and Magazine of Natural History. 



Gentlemen, — Though most cordially appreciating the valuable 

 services rendered to science by the researches, into the fossil Ver- 

 tebrata of the Northumberland Coal-field, of the late distinguished 

 naturalist, Mr. Albany Hancock, in conjunction with Mr. Thomas 

 Atthey, I may nevertheless be permitted to record my entire dissent 

 from the opinions published by them with regard to the so-called 

 " prsemaxilla " of Rhizodopsis. 



Having read Mr. Atthey's " Notes " in the last number of the 

 ' Annals,' all I need say on the matter is that my paper " On the 

 Structure of the Lower Jaw in Rhizodopsis and Rhizodus " was not 

 written without due and careful examination of the subject, and that 

 since then I have seen no reason to change my opinion. 



I am, yours &c., 



Edinburgh, August 7, 1877. E. H. Traquaik. 



Note on the Genus Pceoptera. By Dr. F. Bkuggemann. 



From an inspection of several skins of Pceoptera luguhris in the 

 British-Museum collection, I have come to the conclusion that this 

 bird is identical with the recently described Myiopsar cryptopyrrhus 

 of Cabanis. As the specific name " luguhris " was appUed to it by a 

 mistake, and thus the species had properly no name of its own until 

 1876, it wdl stand as Pceoptera cryptopyrrha. The natural affinities 

 of this form (which has been placed amongst the fly-catchers, chats, 

 and glossy starlings by the several authors) appear to me to be with 

 the Dicruridae. 



I have communicated the above identification, together with these 

 remarks, to Mr. R, B. Sharpe, to whom it was new, and who has 

 kindly inserted it in his ' Catalogue of Birds,' vol. ill. p. 281. 



