IN THE BEITISH AiS'D COPENHAGEN MUSEUMS. 291 



the femur is not very much longer than the tibia, and distinctly (1-4-2) as low as the 

 femur is deep ; the tibia of the first pair is generally 1-2 as long as the tarsus. In 

 two species I have found curiously developed teeth on the claws, the presence of which 

 does not necessarily show that the two species are closely allied [cf. below). 



Text-fies. 74 & 75. 



5 



Ch. argentinus Thor. Coxae of S and $ . x 37. 



This subgroup is in the main identical with Balzan's "■Lamprochernes Tom.," with 

 the important exception that those species which he mentions from Asia and Africa 

 must be expelled and be referred to the group of Ch. hirmanicus Thor., which in 

 external appearance is very similar to the Ch. argentinus Thor., but has scarcely any 

 claim to nearer relationship. All the species which I have examined of this group go 

 naturally together; of those which I have not examined I refer without hesitation 

 Ch. ovatus Balz. to it, while the position of Ch. elegans Balz., Ch. venezuelanus Balz., 

 and Ch. hrasiliensis Dad. is somewhat doubtful. The species of this group fall again 

 into minor divisions : Ch. comm.tmis Balz. and Ch. intermedius Balz. stand closely 

 together ; Ch. nodulimanus Tom. and Ch. nitidus Ell., two species of very diiferent 

 appearance, are closely connected with each other by a number of intermediate forms 

 (cf. Ellingsen, i8. p. 6). 



As the species of this subgroup are very variable and often difficult to determine, a 

 few words may perhaps be added about the specific characters. In the first place, the 

 sex of a specimen must be taken into account both in description and in examination, 

 as the shape of the palps generally varies considerably in male and female. The 

 trochanteral protuberances are of great importance ; the width and the depth of the 

 hand should always be sharply distinguished from each other, 8.nd are with profit 

 compared to each other as well as to the length of the hand and finger. The number 

 of accessory teeth and " spots " are of value, but the variations (which are often 

 considerable) should be taken into account. The proportion between the joints of the 

 legs is, of course, of importance. 



2e2 



