that the setce (four, not three, in number) represent the 

 mandibles and maxillae. The genus Sj'phonophora, being the 

 most extensive in the number of its species (thirty-seven being 

 described and figured), is preceded by a specific tabulation, which 

 is not given in the genera Phorodon, Myzus, Drepanosiphum, 

 Amphorophora, and Megoura. It is of course intended to give 

 later specific characters and proper bibliographical references 

 in an appendix, since the references, e.g., to "Walk.," involve a 

 search through the whole English entomological literature of the 

 last thirty years. 



DiPTEEA. 



The following dipterous memoirs appear in the twenty- fifth 

 volume of the ' Verhandlungen' of the Zool.-Botan. Gesellschaft of 

 Vienna for 1875 : — Von Bergenstamm and P. Low, on new Ceci- 

 domyise ; Dr. Grzegorzek, on new Mycetophilidae ; Dr. Brauer, 

 on a new (Estrus, parasitic on the Bonassus americanus, and on 

 (Estrus Shuckardi and the larva? of several other species ; Prof. 

 Palin, on Austrian Diptera. 



An excellent series of papers on the structure of the parts of 

 the mouth and other organs of various families of dipterous 

 insects, illustrated with highly magnified figures by Mr. Under- 

 hall, of Oxford, has appeared in ' Science Gossip.' 



A complete synopsis of the sub-family of the gall-midges (Ceci- 

 domyides) is given by Messrs. Von Bergenstamm and Low in the 

 Vienna ' Verdhandlungen ' for 187G, comprising a complete biblio- 

 graphical list of works on the subject, a list of 4G3 described spe- 

 cies, and of 148 species of which only the larva3 have been observed, 

 together with a list of the plants attacked by these insects. 



Count C. R. Osten-Sacken has continued his labours on the 

 Diptera of North America, b}^ the publication of the second part 

 of his " Monograph of the Tabanidse of the United States," in the 

 'Memoirs' of the Boston Soc. Nat. Hist., vol. ii., pt. 4., no. 4, 

 with an appendix to the first part of his monograph : fifty-four 

 species are described, of which nineteen are new; and forty-two 

 species are recorded which have been described by other authors, 

 but which remain unknown, unrecognized or doubtful. A list is 

 also given of seventy-four species from Mexico, Central America, 

 and the West Indies. Also an article on the North American 

 species of Syrphus, and on some Di^^tera from the Island of 

 Guadaloupe (Proc. Boston Soc, iv. N. xviii., part 2). 



