287 



and) L. agrestis, by the form of the vulva: this organ is smaller 

 than in L. palustris and L. agrestis, very bright, almost plane, not 

 deeply excavated longitudinally, but has merely a very shallow and 

 broad, often scarcely perceptible, depression in the middle; the po- 

 sterior angles have the form of small and projecting tubercles, and 

 are not, as in L. palustris, broadly dilated and rounded off. The 

 lateral bands on the cephalothorax are not always narrow and single, 

 but frequently broader, and are then usually geminated by a more 

 conspicuous longitudinal dark line; hence these lateral bands do not, 

 as L. Koch loc. cit. supposes, offer any sure mark for distinguishing 

 between L. monticola and Ij. palustris. In the male the tarsi and 

 , metatarsi of the 1 st pair are of exactly the same form as those 

 of the succeeding pairs ? not thickened. — L. monticola is closely 

 allied to L. cursoria C. et L. Koch 1 ), but in the latter the cephalo- 

 thorax is, in both sexes, shorter than the tibia + patella of the 4 th 

 pair, whereas in L. monticola it is equal in length to the tibia + 

 patella of that pair. L. cursoria is also usually darker and a little 

 larger than L. monticola, and the female's vulva has its posterior 

 angles somewhat bent forward and the central depression longer 

 and deeper. From the males of L. agricola and L. agrestis, the males 

 of L. monticola, cursoria, palustris etc., as also of L. amnicola, of which 

 see above, p. 281, differ by all the tarsi being in these last-mentioned 

 species of entirely uniform colour, yellowish. See L. Koch, loc. cit., 

 where a good account is given of the most important distinctive 

 marks that characterize the species of the L. monticola-gxouv). 



In all the species belonging to the L. monticola- group, with 

 •which I am acquainted, except L. hyperlorea, to which we shall re- 

 turn, when considering the next species, the male's bulbus genitalis 

 has on the under side an appressed process, directed obliquely for- 

 ward and outward, which has never the form of a regularly taper- 

 ing, fine-pointed spine (such for instance as in L. lugubris and L. 

 nigriceps among the species of C. Koch's Pardosa, and in most species 

 of his Leimonia), but is coarse, short and obliquely pointed, as in 

 m.onticola, or else rounded or blunt at the extremity. As regards 

 the form of the vulva in the different species that compose the L. 

 monticola-grou]) , vid. sup., p. 280, under L. arenaria Westr. 



Rather like L. monticola in colour and size is also L. proxima 

 C. Koch 2 ), of which I have a ? from Eome through the favour of 



\) C. Koch, Die Arachn., XV, p. 49, Tab. DXVI, fig. 1450; L. Koch, Die 

 Arachn.-fauna Galiz., p. 42. 



2) Die Arachn., XV, p. 53, Tab. DXVII, figg. 1453, 1454. 



