64 PECKHAM. [Vol. 3. 



the cephalic. The upper surface i.s sometimes flat for 

 a little distance both in front of and behind the dorsal 

 eyes, and sometimes slants from them in both directions, 

 the posterior part of the thoracic part falling more steeply than 

 the first half. The sides are vertical, or nearly vertical, in the 

 cephalic part and slant outward a little in the thoracic. 



The quadrangle of the eyes is equally wide in front and 

 behind or a little wider in front, is one-fourth or one-third 

 wider than long and occupies about two-fifths of the cephalo- 

 thorax. The anterior eyes are rather large, and are close 

 together in a straight, or a slightlj^ curved row, the lateral 

 being about two-thirds as large as the middle. The second row 

 is half-way between the other two or is nearer the third row. 

 The third row is sometimes as wide as the cephalothorax at 

 that place and sometimes plainly narrower. 



Euophrys, which has so man}^ species in Europe, is but 

 poorly represented in America. It has no very striking char- 

 acters. The species are usually small, rarely reaching medium 

 size. We give drawings of E. erratica, Wlk., as typical of the 

 genus. 



EUOPHRYS NEWTONII, SP. NOV. 



Plate V, figs. 10-lOa. 

 9 . Length, 6.5. Length of cephalothorax, 2.5 ; width of 

 cephalothorax, 1.8. 

 Legs, 4312; first and second pair stoutest. 



In this species the upper surface of the cephalothorax is 

 strongly inclined in both directions from the dorsal eyes, the 

 inclination backward and forward being about the same. The 

 second half of 'the thoracic part falls a little more steeply, the 

 slope being almost in the same direction throughout. The 

 sides widen out very gradually as far as the middle of the 

 thoracic part and then contract. In erratica, the type of 

 Euophrys, the sides are pinched together in the middle of the 

 cephalic part, and then widen out quite suddenly. The second 

 row of eyes is nearer the third than the first. The sides slant 



