94 Proceedings of the Royal Physical Society. 
{ had previously looked for it on several occasions without success. Specimens 
from the same host were exhibited at a meeting of the Edinburgh Naturalists’ 
Field Club by the late James Simpson (7’ransactions, i. 23); no locality is 
mentioned, but I have no doubt they were got in this neighbourhood. The Rev. 
James Waterston tells me he obtained it from rats killed at Kirkealdy in 
Oct. and Noy. 1909.1 
Polyplax serrata (Burm.)—Specimens of a very small louse taken from mice 
(Mus musculus) in Edinburgh have been kindly given to me by Dr J. H. 
Ashworth. Presumably they are the Hematopinus serratus of Burmeister (from 
the House Mouse), though his description is insufficient to establish this with 
certainty. Mr Waterston, who has obtained the same species and its eggs on 
house mice in Shetland, writes me that in 1905 he met with similar small louse 
eggs on a mouse in Edinburgh. Prof. Neumann, to whom I have submitted 
specimens, does not recognise the species. A Hematopinus from a mouse was 
included in Simpson’s exhibit mentioned above. 
Polyplax spherocephala (Burm.)?—In March 1896 I noticed a number of lice 
on a Squirrel (Sciwrus vulgaris) captured in a wood near Currie. Unfortunately 
I did not preserve any of them, but I have little doubt they were this species. 
Polyplax ventricosa (Denny)—Hematopinus ventricosus, Denny, “ Monagr. 
Anopl. Brit.’—From Wild Rabbit (Lepus cuniculus), Dunipace, Stirlingshire, 
March 1910, and Tyninghame, East Lothian, April 1910; a good many on each 
oceasion. Enderlein placed this species in his genus Hamodipsus, but Neumann 
has shown ? that it really possesses the characteristics of a Polyplax. 
Hemodipsus lyriocephalus (Burm.)—Hematopinus lyriocephalus, Denny’s 
Monograph. —Several from Brown Hare (Lepus ewropeus), Tyninghame, 
April 1910. 
Linognathus piliferus (Burm.)—Hematopinus piliferus, Denny’s Monograph.— 
Common on Dogs (Canis familiaris): Edinburgh, February 1906; Dirleton, Kast 
Lothian, Nov. 1909; ete. 
Linognathus ovillus (Neum.)—Hematopinus ovillus, Neumann, Revue vétérinaire, 
Aug. 1907, pp. 520-524.—From Black-faced Sheep (Ovis aries, var.), Crosswood 
Hill, Pentlands, Midlothian, April 1906, May 1907, and April 1912. Mr W. F. 
Little, to whom I am indebted for bringing this interesting novelty to my notice 
(see my paper in Ann. Scot. Nat. Hist., Oct. 1907, p. 225), tells me that every year 
it occurs in numbers on the faces and cheeks of a few of the sheep on the hill. In 
April last, however, he obtained some for me from the legs also of one of the 
sheep, and they are in no way different from those from the face. J mention 
this, as a totally different species (H. pedalis) has been described by Osborn from 
the legs of sheep in North America. When I first obtained ovillws it was 
undescribed, though Prof. Neumann had shortly before received it from New 
Zealand. It seems to me to fall into Enderlein’s genus Linognathus. 
Hematopinus eurysternus (Nitzsch)—From Cows (Bos taurus, 2), Crosswood, 
Pentlands, Nov. 1905, and March 1906, and Hunter’s Tryst, near Edinburgh, 
May 1906. 
Hematopinus suis (Linn.)—From Pigs (Sus scrofa), Newhbattle, 1904, and 
Swanston, Midlothian, April 1906; Dunipace, Aug. 1911; Tyninghame, July 
1912; ete. 
Fam. Pediculide. 
Pediculus capitis, Leach, and Pediculus vestimenti, Leach—On Man, the former 
chiefly on children. Both forms are still too common. ‘‘ Verminous cases ” are 
' Mr Waterston has also an undetermined Polyplax 6 from a Mus sylvaticus captured at 
Colinton in 1905, 
2 Archives de Parasitologic, 1909, p. 527. 
