June, 191 1.] EwING: NoTES ON PsEUDOSCORPIONS. 77 



long slightly curved pedicel which is equal to about one-third the total length 

 of the segment, pedicel slightly convex on the outer side, but more strongly 

 concave on the inner side ; hand shorter than the tibia, its pedicel prominent, 

 as long as broad ; fingers a trifle longer than the hand and curved inward 

 toward their tips. All the segments of the pedipalps sparsely clothed with 

 rather long simple hairs, some of these hairs are as long as the width of the 

 femur. 



Cephalothorax rectangular, distinctly longer than broad. Eyes absent, 

 also the eye pits. The edges of the cephalothorax are slightly concave at 

 their anterior ends, just posterior to this slight concavity there is a prominent 

 simple hair : anterior margin of cephalothorax slightly convex. 



Abdomen much longer than the cephalothorax ; dorsal plates very thin, 

 smooth and hairless. The whole abdomen is apparently without any hairs. 



Legs rather slender. When the front pair is extended reaching beyond the 

 tip of the chelicerse by half their length ; posterior pair stouter than the rest 

 and when extended backward reaching the tip of the abdomen ; femur of the 

 last leg almost twice as broad as the tibia. 



Length 4 mm. ; breadth i mm. 



Described from a single specimen in the Cornell Collection, 

 lot no. 342. It was collected at Shasta Springs, Calif. This is the 

 second species of this genus to be recorded from the United States. 



Chthonius longipalpus Banks (PI. V, Fig. 15). 



This species is extremely abtmdant around Ithaca, N. Y. If one 

 will turn up most any old log, or an old piece of wood, or a flat stone 

 during the fall of the year, he will seldom fail to find one or more of 

 these pseudoscorpions. They are very curious little creatures, and 

 when disturbed throw back their long " pinchers," held wide open 

 in an attitude of defense. Since they are so very small creatures 

 such fruitless actions seldom fail to produce both amazement and 

 laughter on the part of those who have thus accidentally intruded 

 upon their premises. A drawing of the species is here the first time 

 given. 



List of Species Examined, with their Situations and 

 Localities. 



Fam. CHELIFERID^.. 

 Gen. CHELIFER. 

 Chelifer cancroides Linn. Faun. Suec, ed. XXI, 345, 1767. 



I. Portage, Wisconsin. Several specimens from under the bark of a 

 conifer. Collected Sept. i and 2, 1909, by myself. 



