xv DRASSIDAE 397 
Drassus contains twelve British species. The commonest 1s 
D. lapidosus, a large dull brown spider, more than half an inch 
in length, which lives beneath stones in all parts of the country. 
At least a hundred species of this genus have been described. 
Melanophora (= Prosthesima)' includes a large number of 
species. They are dark-coloured active spiders, many of them 
~ jet black and glossy. Seven are recorded from the British Isles, 
the average size being about a quarter of an inch. They are 
found under stones. A closely allied genus is Phaeocedus, whose 
single species (P. braccatus) has occurred, though very rarely, in 
the south of England. Gnaphosa has fifty-five species, of which 
twenty-eight are European, and four are British. 
Gi.) The CLuBIoNINAE have the anterior spinnerets closer 
together, and the eyes more extended across the caput than in the 
foregoing sub-family. Nearly thirty genera have been established, 
of which three claim special attention. Clubiona includes more 
than 100 species, chiefly inhabiting temperate regions. Fifteen 
are included in the British list. They are mostly unicolorous, 
and yellow or brown in colour, but a few (C. corticalis, C. compta, 
etc.) have a distinct pattern on the abdomen. Cheiracanthiwm is 
a large and widely spread genus, counting three English species. 
There are more than a hundred species of the genus Anyphaena, 
of which one only (A. accentuata) occurs in this country, where 
it is common upon bushes and trees in the south. 
Gii.) The LiocRANINAE include about twenty-four genera, of 
which Zora, Liocranum, Agroeca, and Micariosoma are sparingly 
represented in this country. 
(iv.) The MicarimNak are a remarkable group of Spiders con- 
taining numerous ant-like mimetic forms. Two species of J/icaria 
alone are English, but that genus is abundantly represented on the 
Continent, where the species mount up to forty. They are mostly 
small, dark, shining spiders, which, though not particularly ant- 
like in form, recall those insects both by their appearance and 
movements. Some of the exotic genera, and particularly the 
South American genus Myrmecium, possess remarkable instances 
of mimetic resemblance to ants. Micaria pulicaria is a very 
1, Koch replaced Melanophora by Prosthesima, believing the former to be pre- 
occupied, but according to Simon (Hist. Nat. des Ar. i. p. 341) C. Koch’s use 
of Melanophora for an Arachnid was antecedent (1833) to Meigen’s employment of 
it for Diptera, 1838. 
