SARCOPHAGA.—PHRISSOPODA. 287 
_ The following species of Sarcophaga have been described from Mexico :— 
Sarcophaga plinthopyga, Wiedem. Aussereur. Zweifl. Ins. ii. p. 360. no. 10; Giglio- 
Tos, Mem. R. Accad. Scienze di Torino, ser. 2, xliv. p. 69. 
trivittata, Macq. Dipt. Exot. ii. 3, p. 105, t. 12. fig. 3. 
— trigonomaculata, Macq. 1. c. p. 106, t. 13. fig. 2. 
perneta, Walk. Trans. Ent. Soc. Lond. new ser. v. p. 308. 
innota, Walk. 1. c. p. 308. 
conclausa, Walk. |. c. p. 309. 
despensa, Walk. |. c. p. 309. 
effrenata, Walk. 1. c. p. 309. 
spinigena, Rond. Arch. per la Zool. iii. p. 26 (Modena, 1863); Giglio-Tos, 
Mem. R. Accad. Scienze di Torino, ser. 2, xliv. p. 68. 
Both sexes are described of S. plinthopyga, Wiedem., and S. spinigena, Rond.; the 
males .only of S. perneta and S. effrenata, Walk.; and females only of the others. 
‘The descriptions, however, are in most cases quite superficial and apply equally well to 
several different species. The above-described S. trivialis (no. 16) may prove to be not 
different from S. plinthopyga, Wiedem.; but, as in the description of the latter nothing 
is said with respect to the presence or absence of dorso-central bristles, the bristles on 
the veins, &c., S. prevolans (no. 13) or S. ochripyga (no. 32) might equally well be 
referable to the true S. plinthopyga, Wiedem. 
_ &. spinigena, Rond., has the arista not plumose, but only pubescent in the ¢, bare 
in the ?, and the cheeks armed with strong bristles; it should perhaps be separated 
“generically from the true Sarcophage. 
PHRISSOPODA. 
-Peckia, Robineau-Desvoidy, Essai sur les Myodaires, p. 335 (1830). 
_Phrissopoda, Macquart, Suites & Buffon, 11. p. 222 (1835). 
This genus includes some large species with the abdomen of a uniform black or 
metallic colour. The veins are curved as in the true Sarcophage. In the males the 
legs are densely hairy and the hypopygium is very prominent. 
In the Central-American collections before me the genus Phrissopoda is not repre- 
‘sented, but the following species from Mexico are enumerated by Dr. E. Giglio-Tos 
[Memorie della R. Accademia delle Scienze di Torino, ser. 2, xliv. pp. 67, 68 (1893) ]:— 
_ Phrissopoda preceps, Wiedem. Aussereur. Zweifl. Ins. ii. p. 355. no. 1 (Sarcophaga); 
Brauer & von Bergenst. Denkschr. der k. Akad. Wissensch. Wien, lvi. 
p. 124, and lx. p. 162; Giglio-Tos, l. c. p. 67.—Peckia imperialis, Rob.- 
Desv. Essai sur les Myodaires, p. 335; Phrissopoda imperialis, Macq. 
Suites 4 Buffon, ii. p. 223. no. 1; Phrissopoda imperialis, Macq. Dipt. 
