312 Mr. T. D. A. Cockerell — Descrlplions and 



liair-l)aiuls ; the disks of the soi:;inents with short liair, white 

 in the u»i(klle of 2, giving ])lacc to black laterally, coarse and 

 (ntiiely black on 3 to 5 ; hair on segment 6 long and light 

 inlvous ; hair on inner side of tarsi light oiange ; claws bifid. 



In all respects very closely related to C. (BstivaJh, Patton, 

 but larger, with the pubescence more brightly coloured, the 

 ridges on base of nietatliorax wider apart, the second s.m. 

 broader, and the flagcllum darker. It agrees nearly with the 

 description of C. Kincuklii, Ckll., but the second s m. is not 

 so large as the third, the orbits converge less below, the 

 punctures of the first abdominal segment are not so large 

 and strong, the apical segment has pale fulvous hair; so that, 

 with more the appearance of Kincaidii, the insect is actually 

 nearer to astivalis. The colour of the hair of the scutellum 

 is suggestive of the European C. nasutus, Smith. 



Hub. Boulder, Colorado, at flowers of Heuchera ribifolia 

 in cultivation (the hind legs carry much bright red pollen), 

 June 26, 1905 {Cockerell). 



It was taken in the garden of Mr. D. M. Andrews, and is 

 named after him, in recognition of his numerous botanical 

 discoveries in the vicinity of Boulder. 



CoUetes opuniia, sp. n. 



(^ . — Length about 8^ mm. 



Black, the pubescence white, and quite abundant on head 

 and thorax, on scutellum largely blackish, and slightly 

 stained with blackish on hind part of mesothorax, but 

 not at all blackened on top of head ; eyes very strongly 

 converging helow ; face very densely covered with white 

 hair ; malar space very short, more than twice as broad 

 as long ; mandibles dark reddish apically ; labrum with 

 a very strong apical pit ; ant nnae short, like those of a 

 female, the middle joints not longer than broad, third joint 

 considerably longer than fifth; vertex shining, punctured; 

 mesothorax very shiny, with large, well-separated punctures, 

 very sparse on the disk posteriorly ; scutellum shining, with 

 large punctures ; postscuiellum closely punctured ; area of 

 mctathorax Avith the usual basal quadrate spaces, these 

 mostly lunger than broad, the whole bounded po.^teriorly by 

 a sharp rim ; lateral faces tuberculate ; legs black, with 

 white hair, only the end of the claw-joint reddish; anterior 

 coxaj without spines; abdomen with large, very strong 

 punctures, well-separated on the first segment, closer on 

 the second and tiiird ; apical hair-bands weak on the 

 first two segments, strong on the next three ; tcgulae 

 shining black. Wings hyaline, a little dusky, nervures 



