DIPTERA. 327 



PROCTACANTHUS (p. 206). 

 2. Proctacanthus craverii. 



Proctacanthus craverii, Bellardi, Saggio etc. ii. p. 50 1 . 



Hah. Mexico, environs of the city of Mexico (Craveri 1 ), Guadalajara in Jalisco 

 (Schumann). 



Three specimens from Jalisco. They seem to be identical with the species from 

 Sonora mentioned by Osten Sacken (in his general remarks on the Mexican members 

 of the genus) as being larger than P. craverii. 



ECCRITOSIA (p. 207). 

 Eccritosia amphinome (p. 207). 



Proctacanthus zamon, Townsend, Proc. Calif. Acad. Sci. (2) iv. p. 600 l . 



To the localities given, add :— North America, San Jose del Cabo, Lower California 1 . 

 — Mexico, Guadalajara in Jalisco (Hoge). 



A single specimen from Jalisco, which I have compared with Townsend's type. 



ASILUS (p. 208). 



I have included the following species in the genus Asilus in its wide sense, since I 

 find it very difficult to collocate all of them in the various divisions proposed by Loew. 

 His groups, or at least the greater part of them, cannot be regarded as of more than 

 subgeneric value. 



Table of the Species contained in the Supplementary Mexican Collections examined. 



1. Scutellum with two bristles ; legs more or less yellow 2. 



Scutellum with four or more bristles ; legs wholly black 8. 



2. Femora wholly yellow 3. 



Femora in part or wholly black 4. 



3. Antenme yellow • • • • • xanthocerus, sp. n. 



Antennee black melanocerus, sp. n. 



4. Face scarcely at all concave on the upper part; abdomen distinctly banded, truquii, Rond. 

 Face with a prominent gibbosity, distinctly concave on the upper part . 5. 



5. Wings conspicuously spotted tenebrosus, sp. n. 



"Wings clouded or hyaline 6. 



6. Hind femora slender ; face above scarcely wider than the length of the 



first antennal joint dolichomerus, sp. n. 



Hind femora stout ; face broader above 7. 



7. Third joint of the antennae elongate, as usual, fully as long as the arista, alterus, sp. n. 

 Third joint of the antenna short, hardly more than one-half the length 



of the arista ; the facial gibbosity reaching nearly to the base of the 



antenna testes, ^.n. 



