1872.] NEW SPECIES OF ERIGONE. 755 



tusely behind, and to a considerably greater extent in front, where it 

 terminates with two points or cusps ; the outer one of these is the 

 most prominent, largest, strongest, and slightly the longest ; the 

 inner one is curved, and adheres more closely to the surface of the 

 digital joint ; these cusps give the fore extremity of the joint a 

 deeply emarginate appearance ; and the colour of the produced por- 

 tions is deep brown : the digital joint is large and dark brown. The 

 palpal organs are prominent, but not very complex, with a short, strong, 

 prominent, and slightly curved, black, spiny point at their extremity. 

 An adult male of this Spider was sent me for examination by Dr. 

 Koch, by whom it was found at Bayreuth, in Bavaria. It is allied 

 to Walckenaera ^wofoY^Cambr.^and very nearly to Erigone insecta 

 (L. Koch) ; but differences in the structure of the palpi will serve, 

 with other specific characters, to distinguish it. 



Erigone (Walckenaera) gr,eca, sp. n. (Plate LXV. fig. 10.) 



Male adult, length f of a line. 



The colours of this small species are those common to very many 

 others. Cephalothorax, falces, labium, maxillae, and sternum deep 

 yellow-brown and glossy. Legs dull pale yellowish brown. Ab- 

 domen of a rather sooty brown-black. Its general form is very 

 nearly that of Walckenaera aggeris (Gambr.), but it is of rather 

 a more slender build : the eyes are in the ordinary four pairs ; the 

 foremost eyes of each of the two lateral pairs are the largest, and 

 are in a straight line with those of the fore central pair : the height 

 of the clypeus is equal to one half that of the facial space ; and from 

 behind, and a little above, each lateral pair of eyes a long and 

 rather strong indentation runs backwards and defines the cephalic 

 elevation. The legs are rather long and slender, and furnished only 

 with hairs. The palpi are similar in colour to the legs ; they are 

 not very long nor strong ; the radial is much stronger than the 

 cubital joint, and is broadly and obtusely produced at its upper fore 

 extremity, a little towards the inner side. In this it differs from 

 all others with a somewhat similar form of cephalothorax yet 

 known to me ; the digital joint is rather small, and of a roundish 

 oval form ; the palpal organs are not very complex, consisting chiefly 

 of a roundish corneous lobe, at the extremity of which, beneath the 

 fore margin of the digital joint, is a blackish, curved, pointed spine. 



Two adult males of this little Spider were found by myself beneath 

 stones on the island of Corfu, in the spring of 1865. 



Erigone (Neriene) alexandrina, sp.n. (Plate LXV. fig. 11.) 



Male adult, length f of a line. 



The cephalothorax of this Spider is of ordinary form, very like that 

 of Neriene pygmcea (Bl.), N. latebricola (Cambr.), and others; the 

 clypeus is full and rounded, and its height equals half that of the facial 

 space ; the occiput is slightly gibbous, and a strong indentation runs 

 backwards from immediately behind each lateral pair of eyes ; it is 

 of a bright yellow-brown colour, the normal grooves and indentations 

 marked by dusky, ill-defined lines. The eyes are not very unequal in 



