256 Rev. O. P. Cambridge on new 



L. agrestis, compared with the much longer process in those of 

 L. Jluviatilis, appears to me quite sufficient to determine their 

 specific distinctness. Examples of L. decipiens, L. Koch, sent 

 me by Dr. L. Koch from Germany, agree very exactly with the 

 description of L. agrestis, Westr., given by Dr. Thorell, I. c, 

 who also considers these last two species to be identical (I. c. 

 p. 282). Examples of L. arenaria sent me by Dr. L. Koch 

 I am unable to distinguish from L. Jluviatilis', but an example 

 of L. agricola, Thor., sent me by Dr. Thorell from Sweden, 

 is, I am inclined to think, an example of L. agrestis sent 

 by mistake, inasmuch as the oblique process of the palpal 

 organs is not much more than half the length of that of 

 L. Jluviatilis and L. arenaria, being also broader and slightly 

 obliquely truncated at its extremity. 



There are now several European species of this group so 

 nearly allied as to be very difficult of determination (see the 

 description of L. arenicola, sp. n., ante, p. 253). To determine 

 them satisfactorily a considerable series of both sexes of each 

 form from all the localities in which they are found is neces- 

 sary. Comparative examinations of closely allied species can 

 never lead to a thoroughly satisfactory conclusion when made 

 upon one or two examples only of some one or more of the 

 forms. 



Lycosa annulata. PI. VIII. fig. 10. 

 Lycosa annulata, Thorell, Syn. Europ. Spid. p. 299. 



For several years past I have been aware of there being se- 

 veral British species of Lycosa included among my specimens 

 of L. saceata, Bl. (L. amentata, Clerck) ; but until lately I have 

 had no opportunity of determining them. Among these spiders 

 one of the most striking and distinct is the present, L. annulata, 

 Thor. ; it is much smaller than L. amentata', the patterns on 

 the cephalothorax and abdomen are very like those of that 

 species ; the legs are of a clearer and generally paler yellow co- 

 lour, but distinctly annulated with dark brown, the annulations 

 extending sometimes to the metatarsi ; the palpi, however, inde- 

 pendently of all other distinctions, will serve to distinguish it 

 from L. amentata at once : the humeral joint is deep brown ; 

 the cubital yellow, slightly marked with brown near its base, 

 and clothed with white hairs at its fore extremity ; the radial 

 joint is dark brown and, as well as the digital joint, thickly 

 clothed with black hairs, offering a strong contrast to the white 

 cubital joint : the palpal organs are remarkable for the absence 

 of the curved spine characteristic ofZ. amentata and the strong- 

 oblique process found in L. Jluviatilis and others ; in their place 

 there is merely a small tubercular process of an oval form. 



