188 REPORT ON ZOOLOGY, MDCCCXLIII. 



explains a case opposed to his notion of the salutary effects of the Gastero- 

 phili, and in which a stomach beset with their larvae was found to be per- 

 forated, by stating that this stomach, on more accurate examination, 

 proved to be gangrenous. But whence this gangrene ? The most probable 

 supposition is that it had originated from the excessive irritation induced by 

 the Bots. 



MUSCARI.E. This family has been enlarged with a considerable number 

 of new species by Macquart (Dipt, ex.) The arrangement is, essentially, the 

 old one followed in the ' Suites a Buffou,' except that a series of genera from 

 Robiiieau Desvoidy, and also from Meigen (suppl.) have been here admitted. 

 The new genera are : in the Tachinae group : Hystricia, differing from Jurinea in. 

 the straight tliird antemial joint, and containing T, pyrrhaspis, Wd., and three 

 new American species : Blepharipeza, allied to Eurygaster, the posterior tibiae 

 closely ciliated, with a new species from Mexico ; Trichoprosopus, with hairy 

 oblique hypostoma, pilose antennal setae, naked eyes, and broader fore- 

 head in both sexes, with a new species from Chili ; in the Dexige group : 

 Megaprosopus, with elongated projecting forehead, cheeks, which descend 

 below the hypostoma, very small antenna;, with a new species from Mexico ; 

 Microphthalma, face much inclined, small eyes, cylindrical abdomen, with 

 a new species from North America ; Cordyliffasfer, based upon D. 

 petlolata, Wied., characterized by an elongated, slender, peduncular, first 

 abdominal ring, and Trichodura, formed from D. anceps, Wd., distinguished 

 by extremely long seta; on the scutellum and abdomen, and also in the p 

 by a long ovipositor; in the Muscidse : Pachymyia (Stom. veJ?ans,Wd.) and 

 Glgamyia (Stom. yigantea, Wd.), differing from Stomoxys, the former in 

 having the anteuual seta3 feathered on both sides, and the latter in having 

 them bare, S'Momyia (M. micans wcAfiiscipennis, F.) differing from Amenia 

 in the slender form, Diapliania and Amphibolia, both formed from New 

 Holland species, and standing very near Rutilia, with the autemial setae short 

 and hairy, in the latter, however, only at the base ; Blepharicnema, differing 

 from Lucilia in the thickly ciliated posterior tibia?, with a new species from an 

 undetermined locality ; in the Helomyzidse : Curtonotum (H. yilba, Wd.) 

 differing from Helomyza in the gibbous thorax, &c. ; in the Ortalidae : O.ij- 

 cepliala, characterized by the sharp-pointed forehead, with a new species 

 from an unknown locality ; Camptoneura, formed of Tri/peta picta and ulscura, 

 Wd. ; Eniconeura, with a new East Indian species, Lamprogaster, a New 

 Holland genus, which I was formerly inclined to place with the Anthomyiae, 

 from its possessing minute calyptra ; Cruplnoceni, with a new species from 

 New Guinea ; in the Tephriditse : Odotilomcra, with a Sepsis-like aspect, 



the origin of the tumours, but this was a small Tabamis, to which the larca 

 undoubtedly did not belong. The matter thus still requires further investi- 

 gation. 



