'Q. ': 



DIPTERA. 249 



EUPARHYPHUS (p. 39). 



3. Euparhyphus elongatulus, sp. n. (Tab. IV. fig. 14, $ .) 



<? . Antennae wholly black, the first two joints with black hair ; the first joint one-half longer than the second. 

 Pace reddish-yellow, the orbital margins black and covered for the most part with dense silvery tomentum ; 

 a small, round, black spot in the middle above. Frontal triangle black, small. Occiput black, the lower 

 orbits covered with silvery tomentum. Eyes distinctly pubescent. Mesonotum with erect black hair ; 

 opaque- black, with four narrow, reddish-yellow stripes, of which the inner ones are a little narrower than 

 the others, the outer ones connecting the yellow humeri with the yellow post-alar callosities. Pleurae 

 shining black, with a slender yellow stripe immediately below the noto-pleural suture, becoming wider 

 below the root of the wings. Scutellum and its spines yellow, the small basal angles brown. Abdomen 

 shining black ; the narrow lateral margins, expanded into a rounded spot on the sides of the second, third, 

 and fourth segments, reddish-yellow. Legs yellow ; distal four joints of all the tarsi and the hind 

 metatarsi black. Wings tinged with yellowish : third vein furcate. 



5 . Head shining yellow, the vertex between the oblique impressed lines extending narrowly along the frontal 

 orbits to about their middle, a slender spot in the centre of the front above, a round spot in the 

 middle of the upper part of the face, and a large trifoliate spot on the occiput, black. The broad occipital 

 orbits on the lower half and the facial orbits silvery-pollinose. Eyes sparsely pubescent. Mesonotal 

 yellow stripes broader than in the male, conjoined in front and behind ; pleura? in large part yellow. The 

 greater part of the first and fifth segments of the abdomen is yellow, the lateral spots on the intervening 

 segments larger than in the male. Length 7-7| millim., with the antennas 9-9| millim. 



Hab. Mexico, Omilteme and Xucumanatlan in Guerrero 7000 to 8000 feet 

 (E. H. Smith). 



Two specimens. 



ACANTHINA (p. 41). 



Acanthina argentea (p. 41). 



To the localities given, add : — Mexico, Atoyac in Vera Cruz (H. H. Smith). 

 A single male specimen. 



2. Acanthina inornata, sp. n. (Tab. IV. fig. 17, $ .) 



<? . Frontal triangle, the narrow occipital orbits, and the vertical triangle reddish-yellow ; orbital margins of 

 the frontal triangle narrowly silvery-pollinose. Antennas reddish or slightly brownish-yellow, the 

 terminal annulus and the style black ; first joint only a little longer than the second ; third joint about 

 twice the length of the first two together. Mesonotum shining black, with erect black pile and four 

 stripes of light golden-coloured tomentum. Scutellum shining black, with light golden-yellow tomentum 

 or pile, the tips of the spines yellow. Abdomen opaque black, the sides of the second, third, and fourth 

 segments shining, sometimes reddish, and covered with golden pile like that of the mesonotum. Wings 

 nearly hyaline. Legs black, the knees and the four posterior metatarsi yellow. 



9 . Front yellow, a little wider than the ocelli above and somewhat narrowed anteriorly before expanding 

 into the large frontal triangle ; posterior orbits a little wider than in the male. Length 5-6 millim. 



Hab. Mexico, Atoyac in Vera Cruz (H. H. Smith). 



Three males and one female. The eyes in the male are broadly and closely 

 contiguous, and very densely pilose ; in the female the pilosity is shorter, yet abundant. 

 In the single female specimen the proximal portion of the posterior metatarsi only is 



biol. cente.-amer., Dipt., April 1901. 2 k 



L —y 



