REV. O. P. CAMBRIDGE ON NEW AND RARE BRITISH SPIDERS. 533 
. rounded by brightish yellow thickly disposed cretaceous spots, occupying, in fact, nearly 
all the ground-colour of the upperside of the abdomen ; the sides and underside are of 
a dark dull olive-green colour (probably much brighter when alive); the underside has 
two longitudinal, nearly parallel, diffused bands of yellow cretaceous spots. 
The falces are equal to the cephalothorax in length, and project beyond the extremities 
of the maxillæ to an extent equalling the length of the latter, and are far more divergent 
than those of C. nutrix (Westr.). 
The palpi have the digital joint less in length and strength than that of the last- 
. mentioned species, being slightly less in length than the radial and cubital joints toge- 
ther; the latter of these two joints is nearly half the length of the former. The digital 
spur is rather longer and slenderer, and lies closer to the radial joint, than in C. nutris, 
Westr. The radial joint is destitute of bristles on the upperside; but these may very 
possibly have been rubbed off; if not, their absence would furnish a strong specific 
character by which to distinguish it from both C. nutrix, Westr., and C. carnifex ejusd. 
The radial apophysis differs from that of C. nutrix, Westr., in the non-enlargement of the 
extremity, which is very slightly bifid, the noteh being barely perceptible. From that 
species it differs also in the prominence towards the extremity on the outer side of the 
digital joint being much slighter and further back from its extremity. In this and in 
nearly all the other points of difference from C. nutrix, Westr., the present species may 
also be distinguished from C. carnifex. 
CHEIRACANTHIUM PENNYI, sp. nov. (Pl. XLVI. fig. 6.) 
In form, size, and colours the adult male of this spider resembles C. carnifex, but may 
at once be distinguished from that, as well as from C. nutrix, Westr., and C. erronewm, 
Camb., by the form and structure of the palpi. The radial joint is gwife double the 
length of the cubital, if not rather more; the length of the digital joint no more than 
equals that of both the radial and cubital together; the angular prominence on the 
outer side of the digital joint is barely visible, and still further removed from the ex- 
tremity of the joint than in either of the other species; the digital spur is longer, more 
regularly curved, and of more uniform size from its base to its point, which does not 
taper off sharply, but gradually, to a rather obtuse point, and is also less directed outwards 
than in C. carnifex or C. nutrix, Westr.; the radial apophysis is stronger, bent, and 
distinctly, but slightly, notehed at its extremity; the radial joint is furnished with 
numerous strong prominent bristles above, and others (many in a strongish sort of tuft 
near its fore extremity) beneath. 
An adult male of this spider and immature females (which resembled the male in 
colours and markings) were received in June 1872 from the Rev. C. W. Penny, by whom 
they were found at Wokingham, and kindly forwarded to me among some other rare as 
well as many of our commoner spiders. It is an exceedingly interesting species, from the 
nature of its distinctive characters; and I have great pleasure in naming it after its 
discoverer. 
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