Contributions to the Study of the Lipoucuridae Lw. 1G5 



„L'ip. ein. als selbständige Art derselben anzuführen, und Bleph. 

 limb. Macq. 1844 c/, als Synonym des cf derselben beizufügen; L'i/k 

 ein. Loew 1844 9 (nicht cf, für welches Loew es anfangs hielt, 

 1844, p. 119 oben), and Bleph. fasc. Schin. Q sind Synonyme von 

 Lip. ein. Q." 



If, in doing my duty as a critic, I have noticed some errors in 

 Loew's „Revision", it was withoutthe slightest Intention of disparaging 

 bis excellent Essay. These shortcomings may be explained by the 

 circumstances under which this paper was written. The „Revision" 

 (1877) was the last but one'), of Loew's publications. It must 

 have been written at the end of 1876, or at the beginning of 1877, 

 because Loew quotes his own paper on Hapalothrix (1876) in it. 

 In Sept. 1877 I spent two weeks in Guben (Loew's residence at that 

 time), occupied with revising, packing, and finally shipping for Cam- 

 bridge, Mass., the type-collection of N. Am. Diptera. Although, for 

 that purpose, I spent most of my time in Loew's house, I saw very 

 little of him, much affected as he was by a nervous ailing which 

 required rest and seclusion, and which ended with his death in April 

 1879. It must have been under the influence of this approaching illness 

 that he wrote his „Revision"; because although, as a whole, it bears 

 the stamp of Loew's usual lucidity and conscienciousness, there are 

 passages in it (especially those about Paltostoma and Blepharoeera, 

 in connection with Seh in er) that betray hurry, restlessness and ill- 

 temper. It is so rare to find Loew at fault, that I feit impelled to 

 give this explanation. 



VI. C u r u p i r a F. Müller and S n o w i a wiiiisi two genera or 

 Liponeurldae (Dipt.). 



Since the publication of Dr. F. Müller 's admirable monograph 

 on the metamorphoses of some forms of Liponeurldae in Brazil 

 (Archivio Mus. Nac. in Rio Janeiro, in 4°,, 1881), and the discussion 

 which arose about them (Ent. M. Mag. London, Vol. XVII, p. 13Ü5 

 206 and 225), this discussion has been left in suspenso, for the reason 

 that mature specimens of the three forms of imagos have not been 

 forthcoming, and without them it was impossible for a dipterologist 

 to come to a final conclusion. Recently, Prof. Willis ton, of the 

 Kansas University, kindly sent me a paper of his on a new gcuus 

 Snowia, from Rio Janeiro, in which, ovving to the exactness of the 

 description, I easily recognized the bloodsucking female of Dr. F. M.'s 



) A short, mevely descriptive paper, dated 1878, but which must 

 have been written rauch earlier. 



