HEMIPTERA OP COLORADO. 125 



Fort Collins. September l.")th on ]\rentzelia niulii (Baker). 



"1 liave iilso tiiken ;i very iinomalous Aphid, for wliich I oan j;ive neitlier t'cneric nor 

 specific rletcrmination, forming a gall on the leaves of Arctostaphylos uva-ursi. Oneside 

 of the leaf is turned back- and thiekeriod for about half its lenstli, thereby forming a 

 smooth oblong gall about 10 mm. long and H !nm. in diameter, which is often of a reddisii 

 color. Only apterous individuals were observed. Length about 1.50-L80 mm. Heak 

 reaching the second coxae. Antennae six-Jointed, tlie third Joint longest, tlie si.xth 

 second in length, all of the Joints beyond the third with many fine annulatlons, sparsely 

 liairy; the antennae would reacli a little beyond the base of the wings. Honey tubes 

 very small, broader than long, scarcely elevated above the abdomen. Legs short. Body 

 elongate, dull green, legs a little darker. Individuals examined later In the season, 

 which were evidedently pupae of wing(»d forms have the body more ovate with numerous 

 short hairs. Antennae distinctly seven Jointed and about one-half as long as the body. 

 Honey tubes somewhat longer." 



Footiiills live iniles west of Fort Collins, Jnh^ 19tli 

 (Cowen) . 

 Aleyrodes pyrolae n. s\). 



Pupal scale. Lengtli 1.2'i mm.; width 1 mm. Color viM'y pale straw yellow, some- 

 wliat darker toward the center. Ellipti.'al. slightly Ijroader at t he <:cnter. Margin en- 

 tire, without fringe. Within the mai'gin all .'iround, finely and densely wrinkled, the 

 wrinkles extending i-idially inward about lialf way to the median 

 line along tlie sides. Central portion with fen more or less well 

 defined horizontal folds. Folds on anterior half, four in number, 

 first semiliinate, remainderlinear. Lineseparating first and second 

 folds obtusely angled in ce.Uer, the angle directed eaudad: line 

 separating second and third straiuht; line separating third anrl 

 fourth obtusely arighnl cephalad. Folds on postcri )r half of dor- 

 sum linear and six in number, the line separating tlie first and 

 SHCond folds with extremities bent cephalad: last three folds bent 

 eaudad at extremities. Anal plate darker than surrounding 

 >urface. uneciually tiiangular. the longest, angle directed eaudad. 



Described from several scales of different 

 ages. Four-mile Hill eigbt miles south of 

 Steamboat Springs, July 19th on Pyrohi rotundifolia 

 (Baker). 



Coccus ciicti L. var. confiisus Ckll. Dei. Clockerell. 



I'rohalily this species (Acanthococcns coiilusiis) in tlie niidalpine of Custer 

 County (Coekerell, 10). 



Manitou, Septeml)er '11\\\ on Opuntia (OillHtte). 



Rliiirococciis n. sp. 



Under a rock at West Ciill, April 'l-id. Nake.l, iiyriforni, 2.2') mm long, 

 dull lilac, legs clear red-brown, antennae reddish-brown. Caudal lilanicnts 

 short, but distinct (Cockereli, 10). 

 Dactylopius citri T.oistL l>et. IJuktM-. 



On irabrothammis and S.ilaiiiini ,jasiiii<)ii]es in the college 

 greenhouse, September 10th (Baker). 



