268 Ins. 
mmsuA. 
C. lessonce , p. 144, lubricum , p. 151, sacheni , p. 152, bigoti, p. 1 54, fuscum, 
p. 160, Piedmont, Giglio-Tos, Atti Acc. Tor. xxvi, and Boll. Mus. Zool. 
Tor. vi, No. 94, n. spp. 
Copestylum limbipenne , figured, pi. ii, fig. 2 ; Biol. Centr. Am. Dipt. iii. 
Didea coquillet ti, Mexico, Williston, p. 19, pi. i, fig. 9, Biol. Centr, 
Am. Dipt, iii, n. sp. 
Eristalomyia ru/o-nasuta , W. Africa, Bigot, p. 375, Ann. Soc. Ent. Fr. 
1891 ; E. eunotata, Laos, id. p. 208, N. Arch. Mus. (3) ii : n. spp. 
* Holmbergia, n. g., p. 195, for II. guntherii , n. sp., Buenos Ayres, p. 197 ; 
Arribalzaga, An. Soc. Arg. xxxii. 
^ Megametopon, n. g., near Volucella , for a nondescript Mexican insect ; 
Giglio-Tos, No. 108, Boll. Mus. Zool. Tor. 1891. 
Melanostoma gymnocera , W. Africa, Bigot, p. 375, Ann. Soc. Ent. Fr. 
1891 ; M. catabombum , cremdatum , pi. i, fig. 5, p. 12, rugosonasus , Mexico, 
melanocerum , Costa Rica, p. 13, Williston, Biol. Centr. Am. Dipt, iii : 
n. spp. 
Mesogi'amma, to be used in place of Mesograpta , Lw. ; several Central 
American species described ; Williston, pp. 24-28, Biol. Centr. Am. 
Dipt. iii. 
Microdon mutabilis , mode of its sound-production; Bignell, Ent. M. M. 
(2) ii, p. 225. M. aurifex , figured, pi. i, fig. 2, noticed, p. 2 ; Williston, 
Biol. Centr. Am. Dipt. iii. 
M. niger , Mexico, Williston, p. 4, pi. i, fig. 3, Biol. Centr. Am. Dipt, 
iii ; M. macquarti , Uruguay, rubriventris, p. 128, bonariensis, p. 194, 
Buenos Ayres, Arribalzaga, An. Soc. Arg. xxxii : n. spp. 
Mixogaster bellula , Mexico, Williston, p. 1, pi. i, fig. 1, Biol. Centr. 
Am. Dipt, iii, n. sp. 
Myiolepta auricaudata , Mexico, Williston, p. 40, pi. i, fig. 11, Biol. 
Centr. Am. Dipt, iii, n. sp. 
Ocyptamus fuscicosta , Buenos Ayres, Arribalzaga, An. Soc. Arg. xxxii, 
p. 255, n. sp. 
•* Omegasyrphus , n. g., for a nondescript Mexican insect ; Giglio-Tos, 
No. 108, Boll. Mus. Zool. Tor. 1891. 
v Ophromyia, n. g., near Syrphus, for O. nasica , n. sp., Mexico, pi. ii, fig. 1; 
Williston, p. 55, Biol. Centr. Am. Dipt. iii. 
Phalacromyia pulchra, p. 41, bellula , virescens, p. 42, Central America, 
Williston, Biol. Centr. Am. Dipt, iii, n. spp. 
Pipiza ( Pipizella ) bellula , Mexico, Williston, p. G, Biol. Centr. Am. 
Dipt, iii, n. sp. 
J Rhopalosyrphus, n. g., near Myogaster , fora nondescript Mexican insect; 
Giglio-Tos, No. 108, Boll. Mus. Zool. Tor. 1891. 
Salpingogaster limbipennis, Mexico, Williston, p. 29, Biol. Centr. Am. 
Dipt, iii, n. sp. 
Simonies trichopus , p. 373, pallidibasis ) p. 374, W. Africa, Bigot, Ann. 
Soc. Ent. Fr. 1891, n. spp. 
Sphccrophoria picticauda ) Big., and some unnamed species described ; 
Williston, Biol. Centr. Am. Dipt, iii, pp. 21 & 22. 
