ORTALID^B. CALLOPISTRIA. 141 



lu other respects this species agrees with the preceding genus in 

 the structure of the body; with S. corticalis and van it even_ 

 agrees in the coloring and the picture of the body, as well as in 

 the bristle-like nature of the upper hairs on the sides of the front. 



1. C. annulipes MACQ. $>. - (Tab. VIII, f. 27.) Fusco-nigra, 

 albido-pollinosa, et punctis inaculisque fusco-nigris variegata, tibiis 

 tarsisque pallide lutescentibus, illis uigro-triannulatis, his apicem versus 

 iufuscatis ; alae hyalinae, maculis punctisque nigris confertim aspersse. 



Biownish-blauk, with a whitish pollen, pictured with brownish-black spots 

 and dots ; tibiae and tarsi pale-yellowish, the former with three black 

 rings, the latter brown towards their end. Wings hyaline, densely 

 covered with black spots and dots. Long. corp. $ 0.14 0.15; J 0.17; 

 long. al. 0.160.18. 



SYN. Platystoma annulipes MACQUART, Dipt. Exot. Suppl. V, p. 121. 



The ground color of the body is brownish-black and opaque; 

 the pollen, covering it, is whitish-gray. Head of the same color, 

 covered everywhere with brownish-black spots, moreover, dotted 

 with brownish-black upon the front and the cheeks: upon the 

 posterior orbit especially there is a conspicuous short row of 

 brownish-black spots. Front very broad, perceptibly narrower 

 anteriorly, where it is yellowish or yellowish-red. Eyes rather 

 strongly projecting. Antennae brown, the first two joints and the 

 larger part of the inner side of the third joint yellowish-brown, 

 sometimes much paler. Thoracic dorsum with brownish-black 

 dots, which coalesce into ill-defined, although regularly arranged, 

 spots. Scutellum somewhat swollen, with four bristles, two 

 brownish-black longitudinal stripes and two blackish-brown dots, 

 upon which the lateral bristles are inserted. Pleurae likewise with 

 brownish-black dots and spots; the latter form two irregular and 

 incomplete longitudinal stripes. Pectus brownish-black, with a 

 brown, but little perceptible, pollen. Abdomen with brownish- 

 black dots and regularly arranged spots ; the first segment of the 

 ovipositor is for the most part covered with a whitish-gray pollen 

 and punctate with brownish-black. Femora brownish-black, with 

 a more or less distinct, broad, irregular ring, covered with gray 

 pollen, and with black dots ; the tip is pale-yellowish. Tibiae 

 pale-yellowish with three regular brownish-black rings; the first 

 near the basis, the last before the apex ; tarsi of the same color 

 as the tibiae, infuscated towards the tip. Halteres pale-yellowish. 



