THE BRITISH WOODLICE. 87 Scotland : Tarbert; (Scott, 68). Ireland: Dublin; Ballyfinder, Co. Down; (Scharff, 63): Templeogue; Dundrum; Blackrock; Rathgar, Co. Dublin; Bray, Co. Wicklow ; (R.F.S.) : Oakleigh ; Kerry ; (R.W.) : Belfast; (Welch, Irish Nat., 1896, p. 213.): At the grave of Josiah Welch (grandson of John Knox), Castle Upton; Richhill, Co. Armagh ; Castleconnell Ferry ; (R.W.) : Glenade House, Co. Antrim ; (R.W. from R. Ll.; Praeger). FOREIGN DISTRIBUTION :— Europe: France; (25): Spain; (12) : Ilaly; (59): Denmark; Germany; Holland; (39) ; Dalmatia ; (18). Africa: Algeria; Tunis; (24). Genus—TRICHONISCOIDES, Sars, 1898 (59). p. 164. Abdomen narrow; eyes simple; (or wanting); flagellum, with four joints. The members of this genus are very much like those of Trichoniscus. In the latter, how- ever, the hinder legs are longer in proportion and the eyes are compound. Trichoniscoides albidus Budde-Lund. Plate VI. 1879 Trichoniscus albidus Budde-Lund (7) p. 9. 1898 Trichoniscoides albidus Sars (59), p. 165," pl. LXXIII., fig. 2. We are able to include this species, as a specimen was found by Mr. Webb at Eton Wick in the summer of 1898. It is one of a number of species which the Rev. Canon Norman (49, p. 18) suggested as likely to be British. It is the only representative of its genus, which does not differ in any very important characters from the others in the family. The narrow elongated body will serve to separate it from Trichoniscus vividus and Trichoniscus roseus, but on account of its size, which is much the same as that of Trichoniscus pusillus and the two British species of Haplophthalmus, it will be advisable to give some further points of distinction. From the first its white colour will serve to differentiate it ; the other two lack the narrow abdomen seen in Trichoniscoides albidus. Moreover, not one of the three shows the serrations on the side plates which characterise the species under