from the Uio Xautla, Stale of Vera, Cruz. 27 



Lcnp;tli 9 and 12 milliin. 



I cannot se[)arato these two specimens satisfactorily. The 

 larger one has no whitish hair on front, while the other has 

 the liair of front all whitish except at vertex. I cannot 

 believe that these differences are of specific value in this case, 

 though they may be considered varietal. Without more 

 specimens of botli forms, however, I hesitate to define the 

 variety. The larger specimen also seems to differ in the 

 wings being more distinctly dilute brownish at base. The 

 third antcnnal joint in the larger one is a little longer and 

 more abruptly narrowed on middle. 



The specimens differ but little from Williston's description 

 of cha-foj)/iora (Syn. pp. 149-150, and Biol. C.-A., Dipt. iii. 

 p. 52). I should call the third antennal joint somewhat 

 eiTiarginate. The antennae are brownish yellow, with most of 

 third joint brown. Two median vittai on thorax are con- 

 spicuous by the hair being darker, subappi-esscd, and directed 

 backward, while the rest is white, suberect, and directed a 

 little forward. Scnitellum with coppery reflections; thorax 

 with only blue, green, and purple reflections. Legs black. 

 Abdomen bluish black; the anterior half of segments 3 to 5, 

 above and below, with white pubescence, the posterior half 

 with black. This is even to be noticed on the sixth segment 

 in the larger specimen. 



29. Volucella cordice^ sp. n. 



Fourteen female specimens, San Rafael, June 30 to July 13. 

 All on flowers of the Cordia sp. 



Length 9 to 12 millim. 



Thorax behind with a prescutellar row of bristles. "Wings 

 fuscous brown on outer distal half, becoming dilute fuscous 

 toward internal border extending to alula, yellowish on basal 

 portion. Scutellum wholly clear brownish yellow, second 

 abdominal segment same, except narrow hind border and 

 wide median vitta ; rest of abdomen metallic purplish black, 

 with blue, green, and violet reflections. In some specimens 

 there is a faint yellow shade, more or less distinct, on anterior 

 corners of third segment. Anterior half or less of fourth 

 segment, anterior third or more of third segment, and anterior 

 two-thirds of second segment with short white pubescence ; 

 rest of abdomen with black pubescence. Venter with about 

 same proportions of white and black hair, but longer, with 

 hair of second segment nearly all white. Face and cheeks 

 wnth well-developed stripes, but facial stripe usually narrower 

 than that of cheeks. Legs black or brown, paler at knees 

 and tips of tibiaj. Antennae pale brown ; third joint narrowed 



