236 SUPPLEMENT. 



Antennae reddish-yellow, the first joint yellow, and about as long as the third. Pace yellow, in the 

 middle not so long as the first joint of the antenna). Proboscis reddish-yellow. Mesonotum deep green, 

 but little shining, covered with short light yellow pile ; the sides broadly reddish-yellow. Scutellum 

 green, with the margins reddish-yellow. Metanotum in the middle black. Abdomen cylindrical, gradually 

 tapering from the base to the end of the fourth segment, where it is about twice as wide ; first three 

 segments yellow, with a broad median black band ; fourth segment black, with the anterior and posterior 

 margins yellow ; fifth segment black. Legs light yellow ; hind coxae in great part black ; hind femora 

 black on the basal half, the four posterior tibiae brownish at the base ; the front and middle tarsi with 

 the terminal joints brownish. Wings yellowish ; the furcation of the second and third veins takes place 

 opposite the anterior cross-vein. Length 11-12 millim. 



Hob. Mexico, Omilteme in Guerrero 8000 feet (//. H. Smith). 



Four specimens. 



y PTECTICUS (p. 24). 



Ptecticus figlinus (p. 24). 



To the locality given, add : — Mexico, Omilteme and Sierra de las Aguas Escondidas, 

 both in Guerrero (H. H. Smith), Jalisco (Schumann). 



The nine specimens received from Mexico vary from 9-15 millim. in length : Osten 

 Sacken described a single male. I believe my identification is correct, but the species 

 is so variable that only a detailed description will suffice to separate it from the 

 following : — 



J . Head, except the occiput and small ocellar tubercle, wholly yellow. Pront very narrow below, the eyes 

 not quite contiguous ; the projection below is prominent and smoothly convex. Projection of the second 

 autennal joint rounded and obtuse ; third joint truncate at the tip ; arista distinctly thickened at its 

 extreme base. Mesonotum brown or yellowish-brown, the coloration indistinctly separated into stripes 

 by very narrow intervals. Pleurae, and the front and middle coxae, yellow, the metanotal prominence 

 somewhat brownish. Abdomen yellow, with a broad black or brownish -black cross-band on the second, 

 third, fourth, and fifth segments, that on the second occupying about half of the segment, that on the fifth 

 leaving only a yellow band posteriorly; first segment sometimes with a brownish spot in the middle; 

 sixth segment, when exposed, black, with a posterior yellow band. Hypopygium prominent, reddish- 

 yellow ; forceps long and slender. Legs yellow ; the distal three joints of the front and middle tarsi 

 black or blackish, the second joint more or less blackish ; hind femora in part and the basal portion of the 

 hind tibiae, and sometimes that of the middle tibiae, brown or brownish ; all the femora, but especially 

 the front and hind pairs, considerably swollen ; hind tarsi stout. Wings with a brownish-yellow tinge ; 

 the furcation of the second and third veins takes place a little beyond the junction of the anterior cross- 

 vein ; last section of the third vein not more than three-fourths the length of the penultimate section. 



5 . Pront on the sides narrowly black, brown, or brownish, wider below ; convexity less prominent, more 

 flattened. Abdomen more spatulate in shape, increasing gradually in width to the end of the fourth 

 segment, where it is about three times the width of the base. Pemora distinctly thickened, but less so 

 than in the male. The two-jointed palpi-like appendages of the ovipositor brown. Length 9-15 millim. 



2. Ptecticus testaceus. 



Sargus testaceus, Fabr. Syst. Antl. p. 257 l ; Wiedem. Aussereur. zweifl. Ins. ii. p. 35 2 ; Macq. Dipt. 



Exot. Suppl. i. p. 185 8 ; Walk. List &c. iii. p. 517 \ v. p. 94 5 ; Rondani, Esauie di varie Sp. 



etc. p. 43 6 ; Bellardi, Saggio etc. p. 45 7 (nee Eabr.). 

 Ptecticus testaceus, Loew, Verh. zool.-bot. Ges. Wien, v. p. 147 (12) (1855) 8 ; Schiner Reise der 



Novara, Dipt. p. 64 9 ; V. d. Wulp, Tijdschr. voor Ent. xxiv. p. 156 (1884) l0 • E. Lynch, Catal. 



de los Dipteros etc. p. 17 ". 



