1902.] NATURAL SCIENCES OF PHILADELPHIA. 577 



eye region black ; a narrow marginal black line on the thorax, and 

 above it a broader submarginal yellow band which is not continued 

 along the head ; there are also indistinct brownish-yellow markings 

 radiating from the median groove. Sternum pale yellowish-brown, 

 with a narrow dark margin and a median yellow stripe. Abdomen 

 above greenish or grayish-brown, a more or less distinct median 

 yellow band terminating in a point anterior to the middle, on each 

 side of it two lines of white spots extending to the spinnerets, the 

 more median line with 6-7 spots of which the most anterior is 

 largest and the more posterior connected by faint yellow cross lines 

 with those of the opposite side, while the more lateral line is placed 

 on the margin of the dorsum, sometimes only posteriorly, and the 

 white spots which compose it somewhat elongate. The sides are 

 greenish-brown or yellowish -brown. The venter from the lung slits 

 to a short distance in front of the spinnerets yellow, this yellow 

 sharply outlined laterally and posteriorly by the greenish-brown of 

 the sides; sometimes there are one or more transverse lines of minute 

 dots jiust anterior to the spinnerets. Epigynum reddish-brown. 

 Spinnerets greenish or yellowish, the superior ones darker. 

 Chelicera dark reddish-brown, labium blackish-brown, maxill(e 

 yellowish. Legs greenish -brown with the coxse and proximal 

 portions of the femora yellow. Palpi greenish-brown, the proxi- 

 mal joint yellow. 



Color in Alcohol, d. — ConsideraUy darker than the ?. 

 Cephalothorax almost black, extreme marginal line yellow, no 

 submarginal light band. Sternum as in the ?. Abdomen also as 

 in the ?, except that the venter is very dark by reason of closely 

 approximated, transverse dark lines. Chelicera black. Legs 

 yellow, the femora of the first and second blackish above and 

 below, the other joints of these legs lighter than the third and 

 fourth legs. Palpi with the femur blackish, the other joints 

 yellowish-brown. 



Comparisons.— T\\\% species seems closely related to P. minutm 

 Emerton; but the palpal organ of the c? is proportionately larger 

 in humicolus and shows some differences in details of^ structure, 

 and in humicolus the cephalothorax is not " gray, with a light 

 line near the edge of the thorax and several radiating lines," but 

 in the d (and Emerton describes only the & of minutus) is nearly 



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