CATALOGUE UI NORTH AMERICAN DIPTERA. 42 I 



Dimorphomyia calliphoroides BIGOT, Bull. Soc. Ent. France, 1885, has been 

 found on examination of the type to consist of the head of a Syrphid glued to 

 the body of a Muscid. See BRAUER, Sitzungsbericht Kaiserl. Akad., cvn, 14. 

 We may say at least that it was admirably named ! 



Eggonia VAN DER WULP, mentioned by Brauer and Bergenstamm, 

 Kaiserl. Mus., vi, 104, lacks a specific name for the type, and must have been 

 a manuscript name on sonic nf Van der Wulp's material. 



Eurigaster MACQ. is a synonym of E.rorista, but E. septentrionalis WALKER 

 will be found under Eitphoroccra claripcnnis. 



Fabricia DESV. is a synonym of Echinomyia. but Bigot's F. iiifuinata will be 

 found under Archytas bicolor. 



Loewia EGGER; the species of Townsend all fall under Myiophasia ccncu. 



Lophosia setigena THOMSON has been placed under Clausicella. 



Lydella doryphorae RILEV will be found under Phoroccra, although the genus 

 is a sj'nonym of Exorista. 



Melanosphora diabroticag SHIMKR i> a Cclatoria. 



Micropalpus is a synonym of Liinunuyia. but some of the species are placed 

 under E palpus and Cuphocera. 



Oplisa albifacies BIGOT is referred to Pseudodexia by Brauer, and O. nigri- 

 facics to Medina. 



Pachychaeta jarowchewskyi PORTSCHIXSKV, from Russian America, is listed 

 by B. and B. among the material in the Vienna Museum ; but I have found no 

 other reference to it. 



Phasia atripennis SAY ^s referred to Xanthomelana, and jugatoria to Tn'cho- 

 poda pcnnipcs. 



Podotachina americana B. B. is referred to Tachina mclla. and P. ribrissata 

 B. B. to Euphorocera claripcnnis. 



Pseudogermaria georgiae B. B. is referred to Distichona. 



Ptilocera americana MACQ. is referred to Pliyto. 



Pyrrosia ochracea BIGOT is referred to CEstrophasia. 



Siphoniomyia melas BIGOT is referred to Trichophora analis. 



Thysanomyia inermis BIGOT, mentioned by Johnson. Dipt, of Florida, may be 

 Blcpharipeza inermis, but I am not certain. 



The species of Tryphera described by Townsend all go in Polidca. 



Viviana citrina BIGOT will be found under Chcctona longiscta; gcorgicc in 

 Biomyia; and rufopygata in Lcskia. 



Wahlbergia is a synonym of Bcsscria, but Townsend's atripciiiiis is a Xantlw- 

 niclana. 



Xysta didyma LOEW is a Clytiinuyia. 



CISTOGASTER. 



LATREILLE, in Cuvier's Regne Anim., v, 1829 



DESVOIDY, Myodaires, 239. 1830 (Pallusun. 



SCHINER, Fauna Austr., i. 411, 1862. 



BRAUER and BERGENSTAMM. Zweifl. d. Kaiserl. Mus., vi, 156. 157 (the 



latter as Gymnodytia) , 1893. 

 TOWNSEND, Canad. Ent., xxv, 166; Annals and Mag. Nat. Hist., xx, 284, 



table of species ; both articles contain speculations on the synonymy of 



the genus. 



VAN DER WULP, Biologia, Dipt., n, 445. 1903. table of Mexican species, 

 ferruginea VAN DER WULP, Tijdschr. v. Ent., xxxv. 187; Biologia, Dipt., n. 448. 



Guerrero and Tabasco. Mex. 



