1874.] REV. O. P. CAMBRIDGE ON NEW DRASSIDES. 403 



Several immature examples were found by myself under stones among 

 the ruins of the Baths of Caraealla in February 1865 ; and more re- 

 cently I have received an adult example of each sex from Spain : 

 these do not differ from the immature examples described by Mr. 

 Blackwall and Dr. L. Koch in colours and markings and general 

 characters ; the male, however, has the upper surface of the abdomen 

 shining and coriaceous, and the double row of loug strong sessile 

 spines beneath the tibiae and metatarsi of the first and second pairs 

 is very conspicuous. 



The palpi of the male are of a deep black-brown colour, but neither 

 very long nor strong ; the radial joint is about the same length as the 

 cubital, and has its fore extremity produced over the base of the 

 digital joint into a longish, tapering, curved, sharp-pointed apophy- 

 sis. The digital joint is large and exceeds in length the radial 

 and cubital joints together; it is of an oblong-oval form, and its extreme 

 point obtuse. The palpal organs are simple, consisting of a roundish 

 lobe, from near the middle of which a corneous tapering spiny process 

 runs backwarks and round the inner side and fore extremity. 



The colour of the cephalothorax is deep black-brown, and in both 

 sexes is furnished with some short iridescent hairs. The legs are long 

 and slender, of a black-brown colour, getting lighter towards their ex- 

 tremities. The tarsi, as well as a small portion at the fore extremity 

 of each tibia, are of a pale yellow colour ; this is most marked in the 

 female. The spines beneath the tibiae and metatarsi have been 

 before referred to. Each tarsus ends with two claws, springing from 

 a small supernumerary or heel-joint ; and beneath them is a very 

 small scopula. 



The abdomen of the female is black, with an oblique whitish line 

 on each side at the fore extremity, and a transverse, slightly curved, 

 white line or narrow bar a little way above the spinners ; this white 

 line was almost imperceptible in the adult male, but very conspicuous 

 in the female ; on the upper surface of the abdomen of this sex are 

 a few short iridescent hairs. The form of the genital aperture, 

 shown in the figure, is characteristic. 



Genus Cheiracanthium (Koch). 



Cheiracanthium dubium, sp. n. (Plate LII. fig. 28.) 



Adult male, length 3 lines. 



This Spider is of great interest, approaching so nearly as it does 

 to the genera Brassus and Clubiona. Were it not that the relative 

 length of the legs differs from that of those genera and coincides with 

 that of Cheiracanthium (1, 4, 2, 3, instead of 4, 1, 2, 3), I should have 

 been inclined to describe it as a Clubiona. 



The whole of the fore part is of a dull-orange yellow-brown colour, 

 the falces being rather darker than the rest. The abdomen is of a 

 flattish oval form, rather truncate at its hinder extremity ; its colour is 

 a pale straw-yellow ; an elongate-oblong, central, longitudinal, dull 

 brown marking occupies the fore half of the upperside ; this is fol- 

 lowed towards the spinners by several angular bars or chevrons (of the 



