370 
ARACHNIDA. 
Rey. O. Pickard-Cambridge, M.A., F.R.S., &c. 
Since the publication of my last communication (A.B. 1909, pp. 
246-250), additions to the list of Arachnids are but few, one only 
(Bathyphantes explicata, sp. n.) being, presumably, indigenous. 
Among the most frequent of the Araneidea sent to me have been 
Hasarius adansonii, Sav., and Theridion tepidariorum, C. Li. Koch. 
The former is a conspicuous spider, very active and no doubt easily 
seen by the employés in the gardens, by whom the collections- have 
chiefly been made, and the latter is found in every plant house 
almost in the kingdom, in corners and windows, and now and then 
in the open grounds among plants, &c. Both species are cosmo- 
politan, and the latter may almost be considered a British spider. 
ARANEIDAE. ~ 
British species. 
THERIDIIDAE. 
Bathyphantes explicata, Cambr., sp.n. Coll. in 1898. 
Adult male length rather less than 1 line. 
Cephalothorax oval, slightly rounded before, considerably longer 
than broad, lateral impressions at caput very slight ; the profile line 
is distinctly hollow from the eyes to the beginning of the hinder 
slope. 
are smallest, seated on a strong prominence, and with the hind- 
extremity, the inner one, when looked at in profil , curved 
pointed. The cubital joint has a single tapering slightly sinuous, 
slender bristly hair projecting forwards, The digital joint is rather” 
