570 Proceedings of the Royal Physical Society. 
Dismodicus bifrons (Bl.). 
Watckenaéra bifrons, Bl, Spid. Great Brit. and Irel., and Cambr. Spid. 
Dorset. 
Apparently rare; adult about the beginning of summer. 
Near Kirknewton on furze, 18th May 1894, two adult males 
and several females; Dreghorn, on hedge, 26th June, adult 
male and female. 
Diplocephalus cristatus (51.). 
Walckenaéru cristata, Bl. Spid. Great Brit. and Irel., and Cambr. Spid. 
Dorset. 
Widespread, but not very common ; adult from autumn to 
spring. Behind grass at foot of a wall is a favourite habitat. 
Fairmilehead, Feb., numerous ad. gs and ¢s; Rosslyn and Balerno, 
March, two gs and three ?s; Fairmilehead, Bonaly, Aberlady, Gullane, 
Oct., numerous gs and 9s; Craigmillar, Nov., ¢; Greenbank, Dec., four 
ésand six 9s. 
Diplocephalus frontatus (51). 
Walckenaéra frontata, Bl. Spid. Great Brit. and lrel., and Cambr, Spid. 
Dorset. 
Very generally distributed and abundant, running on 
fences and wall-tops on bright days from autumn to spring. 
In Dorset Mr Cambridge finds it in May and June; with us, 
however, it is anything but a summer spider. The fact that 
four records, which refer almost entirely to adult specimens, 
fall very largely into March and October, suggests that the 
species is probably double-brooded. Immature examples 
noted in Jan., Feb., March, and Nov. 
Comiston, etc., Jan., several ad. gs and @s and a few young; Braid, 
Hillend, etc., Feb., a number of gs and 9s, some imm.; Greenbank, 
Rosslyn, Woodhouselee, Bonaly Glen, Torduff Reservoir, Currie, Balerno, 
Kirknewton, Addiewell, Murrayfield, Joppa, etc., on wall-tops, palings, etc., 
March, adults of both sexes very numerous—some immature examples also 
noted ; Aberdour, etc., April, some ad. 6s and 9s; Leven, Luffuess, etc., 
Sept., a good many ad. gs and ?s,—on 25th a grass field at Luffness Mains 
was so completely covered with gossamer, on which this and one or two other 
species were found, as to give it the appearance of a frozen lake; Comiston 
Road (on wall-top), North Morton, The Bush, Boghall, summit of West Kipp 
(Pentlands), Bonaly, Balerno, Gullane, etc., Oct., adults of both sexes very 
abundant ; Comiston, Dreghorn, Braids, Nov., many adults and a few imm.; 
Greenbank, Craiglockhart, Bridge of Allan, Dec., a few ad. gs and @s. 
