284 Hull : Northiunhrian Coast Spiders. 



nearly forty years ago, and remained unique until the discovery 

 of these Northumbrian examples. It was described in the 

 Linnaean Society's Transactions, vol. xxvii, 1873, under the 

 name of Walckenaera incurvala, and appears in Mr. Pickard 

 Cambridge's 1900 list as Tapinocyha incurvata. Since 1900, 

 however, the limits of the genera Tapinocyha and Cnephalocotes 

 have been better defined, and the figures now given are suffi- 

 cient to show that the ])resent spider undoubtedly belongs to 

 the latter. It appears to lie between Cnephalocotes curtus Sim. 

 on the one hand, and C. elegans Cb. and C. interjecius Cb. on 

 the other. The elevation of the hinder part of the caput is 

 greater than in C. curtus, and less than in the other two, and the 

 tibial process of the palpus is an exaggeration of that which is 

 found in C. interjecius. In the structure of the palpal tarsus, 

 it approaches very near to C. curtus. Viewed from above, the 

 occipital elevation is pretty distinctly outlined by dusky lines 

 which at first sight give the spider the appearance of a Tapino- 

 cyha, the lateral lines looking very much like the furrows which 

 are found in the males of that genus. The female is as yet un- 

 known, but now that a definite locality is known for the species, 

 it ought to be forthcoming shortly. 



Lophocarenum nemorale Bl. is now recorded for the second 

 time for Northumberland. In 1871 it was taken by Dr. Hardy 

 on Cheviot Hill, and quite recently I have found both sexes in 

 Allendale on the moors at about 1400 feet. It was quite plenti- 

 ful in tidal drift between Seahouses and Beadnell, and during the 

 present year I have received it from similar situations in the 

 neighbourhood of Cresswell. It would seem, therefore, to have 

 a decided preference for maritime and sub-alpine localities, 

 though by no means unknown elsewhere. So far as I know,, 

 this is the best authenticated example among spiders of a 

 peculiarity of distribution which is well known in other branches 

 of natural history. 



Prosthesima nigrita Th., so far as Northumberland is con- 

 cerned, has a similar distribution, as the only previous record 

 was for Cheviot. 



Erigone arctica White, and E. longipalpis Sund. are now 

 known to abound all along the north-east coast. They literally 

 swarmed in the tidal drift, the former being the more abundant 

 of the two. Both of them also occurred casually on the sand- 

 hills. These two species seem to be essentially maritime. 



Lophocarenum parallclum Bl. was equally plentiful with 



Natural St, 



I 



