Mr. T. I). A. CockcTclI un lUcs. 25 



St/iiJuiIoiiui f inter ((^rcss.), siihsp. ardijaUi^ nov. 



9 . — Maii(lilil(v< I'litircly Mack ; eyes in life black ; li;,'l>t 

 pait.s ot" alKlomiiial haiiils vrry pah- ocliiaceous (not white or 

 asliy) ; sliiiiinj; liiiul margins of lirst two scgniriits narrower, 

 jiiul that on third reduced to an extremely narrow streak ; 

 dark apical hairs sooty or seal-brown (not at all ferruginous); 

 last ventral hair-band deep strong ferruginous, edged with 

 whitish. 



Iloh. Prospect Lake, Colorado S])rings, Colo., at (lowers of 

 AragaUus Lainherti, May 22 ( /'. (0 IT. Ckll). 



Syuhalonia crenulaticoruis (Ckll), subsp. h'/>pi'a', nov. 



(^ . — Avcragin;^ perhaps sli;^htly larger; elyjKMis yellow, 

 except the broad hind border, the upj)or mari^in of the yellow 

 theieforc with a pyramidal outline; fourtii antenna! joint 

 averaging longer. 



Ilab. La Cueva, Organ Mts., N. M., i)rox. 5.300 feet, at 

 flower.'^ of Lijpia Wn'(//i(ii\ Sept. 5 (C. //. T. Tuicnsend) ; 

 also three collected bv Prof. Townsend at Dripping IS[)ring, 

 Organ Mts., N. M., Aug. 10. 



Easily known by the large amount of yellow on the clypcus ; 

 the middle part of the labrum is also yellow, whereas in true 

 crcmdaticoniis the whole labrum is black. 



Sjihecodes pecosensisj Ckll. 



Chevenne Cafmi, Colorado, at flowers of Prunus, May IS, 

 1J104, 2 ? {W. P. Cockerell). 



New to Colorado. The specimens are a little larger than 

 the type. The hair at the end of the abdomen is sooty, and 

 there is a deep constriction between the first two dorsal 

 abdominal segments. 



A<jnpostemon viridulus (L'\ibr.). 



Colorado Springs, Colo., at llowors of Tarax icum tura.v- 

 (icuni, 1 ?, May JO (II'. /'. Cockerell). 



IJcrlades (jracdior, Ckll. 



Jfrriadrit f/rncilior, Ckll. Ann. & -Mn;.'. Nat. Hist., Aup. I8i>7, p. l.'?"^. 

 r Trt/petes burbutuifj Kobeitson, Truus. Anitr. Knt. 8oc. x.xix. (^llHJo) 



i.;i7i. 



Females from Las Vegas, New ^le.xico, at flowers of 

 CduvolcuhtH arvetisin^ June 17 {CockurcU), and Pecos, N. M., 

 .)i;ly 15 (M'. V. Cockcre/I), agree witii II. (jracHior, but also 



