DIPTERA. 
363 
Mulio and Cytherea, Loew remarks (1. c. p. 379) upon these genera. Cy- 
thcrea (Fab.) has the priority over 3fulio (Latr.) ; 31. ohseurvs is the type of 
Cytherea^ and the latter name must be retained for those species which 
agree with M. obscurus in their characters. 31. infmeatus and some allied 
species with only two submarginal cells may also be referred to Cytherea, as 
31. cinercus and others have the anterior submarginal imperfectly divided, 
and thus form a transition from one group to the other. The species allied 
to 31. pallam, with a much shorter proboscis, two submarginal cells, and the 
first posterior marginal cell open, form the genus 3Iulio, with which Loew is 
inclined to combine his genus ChalcocJiiton. 
New genera and species : — 
Diplocamyta, g. n., Scliiner, Reise der Novara, Zool., Dipt. p. 119. Allied 
to Exojn'osojya. Sp. 71. singularis, sp. n., Schiner, 1. c. p. 120, Chili. 
Tritoneura, g. n., Schiner, 1. c. p. 133. Allied to Neuria and Comptosia. 
Sp. Comptosia luguhris (Phil,). 
CaUynfhrophora, g. n., Schiner, 1. c. p. 139. Allied to Corsomyza (AVied.). 
Sp. C. capoisis, sp. n., Schiner, 1. c. p. 140, Capo of Good Hope. 
Proraehlhes, g. n., Tioow, Deri. cut. Zeitschr. 1808, p. 381. Allied to Apa- 
tomyza', second submarginal cell very short and broad, discoidal cell wedge- 
shaped ; joint 1 of antennfo oval, 3 almost equal to 1, very broad at base, 
truncated and irregularly impressed at apex ; anterior tibiae not produced 
into a spine at apex. Sp. P. ledereri, sp. n., Loew, 1. c. p. 382, Cilicia. 
3Iulio marginalis, Rondani, Ann. Soc. Nat. Mod. iii. p. 35, pi. 4. fig. 8 (ant.), 
Buenos Ayres ; 31. lateralis, Rondani, ibid., pi. 4. fig. 9 (ant.), Mendoza. 
Exoprosopa brahma, Schiner, Reise der Novara, Zool., Dipt. p. 118, Ceylon, 
and 7^. dichotoma, Sclunor, 1. c. p. 119, South America. 
Argyromveba caloptcra, Schiner, l.c. p. 121, South America; A. jjcecilo- 
pliora, Schiner, ibid.. Chili ; A. imitans, Schiner, 1. c. p, 122, and A. pi'opinquay 
Schiner, 1. c. p. 123, South America, 
Anthrax semitinctus, Schiner, 1. c. p. 124, and A. nigricosta, Schiner, 1. c, 
p. 126, Chili. — Anthrax barbiventris, Rondani, I, c. p. 30, Mendoza. 
Anthrax pygarga, Loew, 1. c. p. 382, Cilicia. 
Lo?natia siperba, Loew, 1. c. p. 383, Cilicia. 
Lomatia infcrnalis, Schiner, 1. c. p. 128, Gibraltar ; X. australensis, Schiner, 
1. c. p. 129, Sydney; 
Neuria grandis, Schiner, 1. c. p. 132, and N.hemiteleh, Schiner, ibid., Sydney. 
Dolichomyia detecta, Schiner, 1. c. p, 135, Chili. 
Systoechus callynthrophorus, Schiner, 1. c. p. 137, Sydney. 
Acrocerida;. 
Schiner (Reise der Novara, Dipt. pp. 140-142) remarks upon the genera 
and subordinate classification of this family. Of the described genera he 
refers Jhmops (Fab.) to Ogcodes (Ijat.), Eriosoma (Macq.) and Exetasis 
(Walk.) to Ocncea (Erichs.), Pilhogasfer (Loew) to Opsebius (Costa), 
Platygaster (Zett.) to Sphccrogaster (Zett.), 3Iesocera (Macq.) to Psilodera 
(Gray), 3fesophysa (Macq.) to PanojJS (Lamk.), and 3fegalybns (Phil.) to 
Thyllis (Erichs.). As regards the division of the group into subfamilies, 
Schiner rejects Loew’s proposed two sections, Cyrtina and Oncodina, on the 
