186 THE CANADIAN ENTOMOLOGIST 



These specimens were taken from flowers of Helianthns, on August l7 

 and September 6, at Edgebrook, Illinois, near the type-locality of the species. 



The two sexes differ very markedly in several respects. The ridges are 

 alike in the two sexes, except that the second joint of the hind tarsus bears 

 two, rather than three, oblique ridges ; in some males a rudiment of the third 

 ridge can be distinguished. The males are somewhat darker in color than the 

 females; the prothorax is ferruginous rather than rufous; the median black 

 line is shorter, being restricted to the posterior half of the prothorax; the elytral 

 vitta is narrower and fainter, in some specimens being apparent only at base 

 of the elytra. The inner edge of the anterior femora in the male only bears 

 setae. The males are somewhat shorter and notably slenderer than the females. 



NOTES ON THE GENUS GARYPUS IN NORTH AMERICA. 

 (PSEUDOSCORPIONIDA— CHELIFERIDAE.) 



BY JOSEPH C. CHAMBERUN, 

 Stanford University, California. 



In studying a small collection of these interesting arachnids from the 

 California Academy of Sciences, kindly loaned through the courtesy of Dr. 

 E. P. Van Duzee. I discovered a large Garypiis from Lower California- which 

 is apparently undescribed. There were also representatives of ChcUfcr and 

 Chclanops which I believe likewise to be new and will describe in a late^; paper. 



To Mr. G. F. Ferris of Stanford University, for hvs always wilHng, 

 kindly criticism and help in preparing this description I wish to extend my 

 sincerest thanks. ' 



Garypus g:igaiiteus, sp. nov. 



Female — (Fig. A) Measurements. A large species measuring 7.5 mm. 



in length, including chelicerae. Other measurements may be tabulated : 



Anterior margin of cephalothorax 3/ mm. 



Posterior margin of cephalothorax 1-50 mm. 



Length of cephalothorax (exclusive of chelicera) 1-60 mm. 



Pedipalps (including coxa) 6.55 mm. 



First leg (including coxa) 3.50 mm. 



Second leg (including coxa) 3.55 mm. 



Third leg (including coxa) 4.40 mm. 



Fourth leg (including coxa) 5.10 mm. 



The length of the individual palpal joints are: coxa, .5 mm.; trochanter, .5 mm.; 

 femur, 1.75 mm.; tibia, 1.5 mm., and claw, 3.3 mm. 



Color. (Alcoholic) — Generally light brownish. Fingers reddish brown; 

 hand light reddish yellow. Remainder of palpi and also legs, light pale brownish. 

 Cephalothorax brown. Abdominal scutae light brown with central darker spot. 

 V'entral abdominal plates light brown ; only last seven pairs being visible as the 

 rest are unchitinized and soft. Intersegmental parts and areas surrounding 

 the operculum, very pale brownish. 



Morphological characters. Pedipalpi moderately long and slender, 

 sparsely clothed with minute simple hairs ; fingers distinctly curved, terminated 

 by a stout tooth and provided along their length with a row of minute teeth or 

 serrations. Hand very convex on the inner margin and shorter than the fingers. 



