m THE BRITISH AND COPENHAGEN MUSEUMS. 221 



From South America : Ch. imperator, sp. n. ; Cli. rex, sp. n., and Ch. viacropal])us 

 Tullgr. 



From Australasia (Hawaii) : Ch. hifissus Sim. 



As species of this group liave never previously been described from South America 

 (the domestic species Ch. cancroides, of course, excepted), the occurrence of two 

 curiously developed species is of peculiar interest. 



Synopsis of Species *. 



a. Claws of fourth pair of legs with teeth. Tergites of <J with lateral 

 . keels, and the distinctly gaping fingers of the palps without any 



process on the inner margin of the movable finger. 

 a}. The hand as long as the finger. The tarsus of the first pair of legs 



in cj dorsally without terminal projection 1. Ch. cancroides L. 



S\ The hand at least 1'4 as long as the finger. Femur 8"5 [S) or 



5 "8 (?) as long as wide. The tarsus of the first pair of legs in 



(J dorsally with terminal projection 2. Ch. imperator, sp. n. 



b. Claws of fourth pair of legs without teeth. Tergites of J" with- 



out lateral keels, and the slightly gaping fingers of the palps with 

 a distinct process on inner margin of movable finger. The femur 

 is 4' 7 as long as wide. The tarsus of the first pair of legs in ^ 

 without any terminal projection dorsally 3. Ch. rex, sp. n. 



1. Chelifek cancroides L. 



From South America this widely distributed species has been recorded from Cape 

 Horn (Simon, 6. p. 36), from Tierra del Fuego (Simon, 12. p. 167), and from Para 

 (Ellingsen, 18. p. 16). 



2. CiiELiFER IMPERATOR, sp. n. (Plate XXIX. figs. 1 a-i.) 



Male. 



Cephalothorax. — One pair of distinctly convex eyes. Cephalothorax distinctly 

 longer than wide behind. Two prominent very deep transverse grooves, which are 

 almost straight, are present. Cephalothorax uniformly and distinctly granular, but 

 also provided on each side with about 12 small tubercles, which each bear a single 

 short clavate hair. 



Abdomen (Plate XXIX. figs. 1 a-b). — The abdomen is fairly elongated and depressed, 

 in connection with the cephalothorax showing an elongated egg-shaped circumference. 

 All tergites except the first two with distinct longitudinal line. From the first to the 

 eighth the abdominal tergites possess, like the second thoracic, lateral keels, which are 



* Chelifer macropalpus TuUgr. (23. pp. 26-29, fig. 1) from Haiti is nearly related to Oh. imperator, sp. 11., 

 but scarcely identical with it oa account of smaller size, less slender tibia of the palps, and different structure 

 of claws (posterior claw of first pair of legs possesses a tooth). 



