100 THE CANADIAN ENTOMOLOGIST. 



a brown stri])e on each anterior side, and a pair of brown stripes 

 above, which are widely separated in the middle, but united at either end; 

 these on the posterior sides throw off oblique marks running down the 

 sides; venter pale, with a brown mark before spinnerets. Femur I. much 

 longer than cephalothorax, which is about the length of tibia I. ; eight 

 pairs of spines under tibiae I. and II. , pairs under metatarsi I. and 

 II. The M. E. form a quadrangle barely, if any, higher than broad. 

 The epigynum shows a small cavity, truncate in front, broadly rounded 

 behind, and divided by a septum. 



Los Angeles, California. (Davidson.) 

 Epeira arizo?ieiisis, n. sp. 



Length, 4.2 mm. Pale yellowish, nearly uniform, the abdomen more 

 whitish yellow, no marks on the legs or anywhere else. The abdomen is 

 nearly as broad at basal third as it is long ; in the $ , however, much 

 narrower. The base is broadly rounded, and the angles rather prominent, 

 but not humped. Seen from the side it is evenly rounded to the 

 spinnerets. The epigynum has a rather broad and short finger, upturned 

 at the tip, each side is an oval cavity uniting on the middle. The 

 male tibiae I. and II. have two pairs of long spines beneath and an 

 apical short pair, the tip is not curved or thickened. 



Arizona. (Townsend.) 

 Acrosoma 7?iaculata, n. sp. 



Length, $ , 5.2 mm. Cephalothorax uniform dark brown, about twice 

 as long as broad, broadest in middle, about as broad in front as behind, a 

 depressed furrow slightly before the middle ; legs of moderate length ; 

 femur I. a little shorter than cephalothorax, legs yellowish, tibiae, patellae, 

 and apical half of femora I. and II., dark brown, on hind legs a brown 

 ring on tips of femora, patellae, tibiae, and metatarsi ; abdomen about 

 twice as long as broad, sides slightly convex, but hardly twice as broad in 

 middle as at base ; at basal third above is a small conical hump or spine 

 each side; at apex are four conical spines, the superior pair semi-erect, not 

 divergent, the inferior pair directly below superior pair, shorter, horizontal 

 and scarcely divergent. Abdomen black, marked with yellow spots, a 

 double spot each side at base, followed by four spots in a row on each 

 side, the apical spot being larger and having an extension upon the outer 

 side of the sui)erior spines ; between the sub-basal humps is a pair of yel- 

 low spots, and behind them a median one transverse, toward the apex is 

 a pair between the third of the lateral row, and between the bases of the 



