428 ^i'"- H- *5. Bagnall on a 



type of T. aryentem, i'or tlie opportunity of examining which 

 I am indebted to the courtesy of M. Jacques Surcouf, of tlic 

 Laboratoire Colonial of the Museum National d'Histoire 

 Naturelle, Paris) may be distinguished at once, inter alia, by 

 the light grey stripes on the anterior half of the dorsum of 

 the thorax, by the scutellum being entirely clothed with pale 

 chrome-yellow hair, instead of having its basal half covered 

 with silvery white and its distal half witli brownish black 

 hair, by the venter being, Avith the exception of the tip, 

 entirely light grey, instead of the third and following segments 

 being black with light grey hind margins, by the basal 

 portion of the third joint of the antennae being much 

 broader and lighter in colour, and by the fi'ont femora being 

 clothed on the outside and below with whitish instead of 

 with blackish hair. From T. sharpei, Austen {loc. cit. p. 226. 

 • — Nvasaland Protectorate), T. ivilliamsii is distinguished by 

 the coloration of the antennae, the more elongate basal 

 portion of the third joint, the much narrower front, and the 

 coat of vellow hair on the scutellum. 



LXVI. — On Philoscia patiencei, sp. n., a new Terrestrial 

 Isopod. By KiCHARD S. Bagnall, F.E.S. 



[Mate XVIII.] 



One day early in December, 1907, whilst staying in London 

 with my friend Mr. H. St. J. K. Donisthorpe, we spent a 

 few hours collecting in the hothouses of the Botanical 

 Gardens, Kew, and were fortunate enough to secure many 

 interesting invertebrates, amongst which were a spider 

 (Ischnothyreus velo.v, sp. n,, Jackson), a Tartarid {Trithyreus 

 baynallii, sp. n., Jackson) *, and some species of woodlice 

 previously undescribed. Our investigation of one house in 

 particular was very promising. Most of the plants in this 

 hothouse, wliich at the time of our visit registered 75° F., were 

 of West-Indian origin ; the known ants and beetles we found 

 therein were also originally described from the West Indies, 

 and it is therefore highly probable that the spider and 

 Tartarid just mentioned are of a similar origin. 



In this hothouse, then, a small woodlouse was particularly 



* A. Eandell Jackson, "On some rare Aracbuids captured during 

 1907," Trans. Nat. Hist. Soc. of Northumberland, Durliam, and Newcastle- 

 upon-Tyne, n. s., iii. pt. i. pi. iv, pp. 49-78, 



