120 



value (cf. p. 130; pi. JIT, figs. 8 g-f ). As far as the detailed structure of the labruni 

 and tlie maxillae are concerned I refer to the above description (cf. p. 29 — 30; 

 pi. I, fig. 8 a). 



Palps. — The hairs of the three basal joints of the palps are either clavate 

 or pointed, but never simple (a few hairs excepted); generally those of the hand 

 are almost simple or at least in species with pointed hairs partly completely so, 

 and those of the fingers are with a few exceptions completely simple without any 

 distal teeth. The femur bears posteriorly near the tip and the tibia near to the 

 base in many forms with smooth, clumsy palps a slender, pointed and simple 

 hair much longer than all around; the hand bears sometimes a similar hair, and 

 the fingers bear a probably constant number of tactile hairs. The shape of the 

 joints of the palps and the relation between the different proportions of the same 

 joints and of the joints compared with each other are variable to an extreme 

 degree; scarcely any character can be applied to all the members of this genus. The 

 teeth along the inner margins of the fingers stand close together and are pointed or 

 more or less obtuse (cf. p. 33 — 34); the fingers bear often in addition to the usual 

 marginal ones accessory teeth, differing in number and arrangement. 



Coxae. — The coxae are almost on a level with the maxillae and with each 

 other; they are generally fairly elongate, in less degree those of the first pair, 

 which are almost trapezoid and not much longer than they are broad; the two 

 following pair are distinctly longer than broad and distinctly widened out towards 

 the extremity. The fourth pair are as a rule both longer and broader than the 

 preceding, but are very variable, providing specific and sexual character of impor- 

 tance in many forms; they are most modified in the females of Ch. equester With 

 (^Jl. pi. VIII, fig. 3 d, Ç) and C/i. scu/p/iirafus Lewis (21. pi. VIII, fig. 2 f ), but especially 

 in the males of the "Lophochernes Sim." group, in which they always include a 

 coxal sac of remarkable structure and sometimes bear an external clumsy spine 

 as in Ch. Mortensenii n. sp. (PI. Ill, fig. 1 f ). 



Legs. — The legs are found in all forms between extremely long and slender 

 and very short and clumsy; the different joints vary in proportions according to 

 those of the whole leg, but not in a perfect manner; the length of the tarsus is 

 comparatively larger in the long-legged than in the short-legged forms. The femur 

 of the first pair of legs is provided with a basal trochantin of somewhat varying 

 length and generally deeper than the tibial part of the femur, where they are 

 connected. The two joints are in most species connected by an articulation, which 

 makes a wide mobility in the horizontal plane possible (cf. p. 37; fig. 4 b, a-b); 

 only in a few Ch. subriiber Sim. and Ch. Murrayi Poc. we find an articulation of 

 another and less perfect nature (cf. p. 37; fig. 5 a-b). The tarsus is always one- 

 jointed, in the fourth pair of legs always shorter than the tibia, but in the first 

 pair of legs at least sometimes of equal length to the tibia f. inst. in Ch. Moiiensenii 

 n. sp. The shape of the tarsus ditTcrs in several species of ''Lophochernes Sim." 

 from that of the female and provides in many of these species useful syslcmalic 



