61 



four teeth. I did not find L. alticeps there. On these grounds I am 

 driven to conclude that L. luteola is the same species that C. Koch 

 has described under the name of Bohjphantes alpestris. 



The male of L. luteola Bi.ackw. or L. a/finis Westr. is easily 

 distinguished from L. alticeps by the features indicated by Westring: 

 the head is less projecting, not drawn out into a point between the 

 4 central eyes, the auterior row of eyes is straight, not curved down- 

 wards, etc. The females of these two species are on the contrary 

 difficult to distinguish. Westring, who had but one specimen of that 

 sex to examine, says, that in the female L. affinis the distance from 

 the margin of the clypeus to the anterior central eyes is only l'/j 

 times, not, as in L. alticeps, twice as great as the length of the 

 area of the central eyes: neither is the head, as in L. alticeps, ele- 

 vated between the four central eyes. The first-mentioned feature 

 I have been unable to verify in any of the many females which, 

 together with an almost equally numerous collection of males of L. 

 luteola or affinis, were sent to me by v. Nordmann, who captured 

 them at Helsingfors, aud doubtless collected both males and females 

 at the same period and in the same localities. The said distance 

 appears to me in these Finnish specimens to be almost as in L. 

 alticeps, i. e. double the length of the area of the central eyes. (In 

 a Swedish specimen from Gotland, given me by Mr. Eisen, as also 

 in a female from England sent me by Cambridge, that distance is 

 however somewhat less, and more corresponding with Westring's 

 description). But they are distinguished without difficulty from L. 

 alticeps by the extremity of the head being, when seen from above 

 and behind, limited in front of the two posterior central eyes by a 

 slightly curved or almost straight line, whereas in ? of L. alticeps, 

 the head, contemplated from the same point of view, appears trian- 

 gularly pointed. They may also be distinguished by the different num- 

 ber of teeth on the palpal claw. These teeth are, in general, only four 

 or three in luteola (rarely one or two more), but in L. alticeps 

 they are (always?) eight in number 1 )- In other respects, excepting 



1) The number of teeth on the tarsal claws also appears to be something 

 greater in L. alticeps than in L. luteola: in the former I have found on the 1»* 

 pair 14 teeth on the one and about 18 on the other superior claw (both in the 

 <J and J). In L. luteola I have found the numbers respectively 14 and 16 in 

 the and 12 and 14 in the <J. The number of these teeth, which it is diffi- 

 cult to count, may be somewhat variable, and is not the same on all the diffe- 

 rent pairs of legs. 



