. DIPTERA. 243 



species from the existing descriptions, from the fact that no attention has been paid to 

 structural differences, and the colour-characters are vague in the extreme. 



From Central America there is a single species in our collection, which is not 

 identical with any of the four others known to me from Brazil. It is not impossible, 

 however, that one or the other has been described. 



1. Chrysochlora pulchra, sp. n. 



2 . Front and face light sulphur-yellow, the space between the ocelli black ; front long and narrow, its 

 length from the ocelli to the root of the antennae at least three times its breadth ; in profile, with a 

 scarcely visible convexity above the eyes, the depression on the lower part shallow. Antennae elongate, 

 yellowish-red, the first two joints yellow ; if bent backwards, the antennae would reach three-fourths of 

 the distance to the ocelli ; arista shorter than the third joint. Pace, in profile, with the lower part 

 receding rectangularly, the latter not wider than the front, and only very slightly wider than the vertex. 

 Proboscis and palpi light yellow ; occiput black, save the continuation of the front down to the neck. 

 Thorax light yellow, in places with a greenish tinge ; mesonotum with three brown or brownish stripes 

 of the usual shape, more or less obsolete in places ; pleurae almost wholly light yellow ; scutellum yellow, 

 with the base black. Abdomen yellow, with four broad brown or blackish bands. Legs light yellow. 

 Wings tinged with yellow, the distal part and a small spot in the distal end of the first basal cell 

 infuscated. Length 12 millim. 



Hab. Mexico, Teapa in Tabasco (H. H. Smith). 



The female antenna is distinctly annulated, showing six divisions. The male 

 antenna will doubtless prove to be much shorter and the divisions almost imper- 

 ceptible. Other species of the genus vary in the depth of the markings on the thorax 

 and abdomen, and in having a brownish spot on the legs ; probably C. pulchra will 

 show similar variations. One specimen. 



CYPHOMYIA (p. 34). 

 Cyphomyia varipes (p. 34). 



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



Five specimens, agreeing well with Gerstacker's description. The thorax is without 

 pilose markings. 



Cyphomyia albitarsis (p. 35). 



Stratiomys albitarsis, Fabr. Syst. Antl. p. 80 l . 



Cyphomyia albitarsis, Gerst. Linn. Ent. xi. p. 300 2 ; Bellardi, Saggio etc. i. p. 22 3 ; Schiner, 



Reise der Novara, Dipt. p. 53 4 ; Giglio-Tos, Mem. della Reale Accad. delle Sci. di Torino, 



(2) xliii. p. 105 B . 

 Cyphomyia fenestrata, Macq. Dipt. Exot., Suppl. i. p. 48 6 ; Walk. List &c. v. p. 16 \ 



To the localities given, add : — Mexico {Salle 5 , Sumichrast 5 ), Cuernavaca in Morelos, 

 Teapa in Tabasco (H. II. Smith).— South America 4 , Colombia 6 , Essequibo 2 . 



Nine specimens, including male and female, have been sent to us from Mexico,. 

 I see but little reason to doubt the identity of Bellardi's species. 



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