Note on Mallophaga from the Little Auk ; &c. 275 



Fam. Liotheidae. 



TVIenopon fu'vofasciatum, P. — A small Menopon from Merlin, Ourrie, Feb. 1881, 

 is probably the var. minor of this species. 



M. mesoleucum, N.— $ from Hooded Crow, near Gorebiidge, Oct. 



M. rusticum, G. % — I assign to this form two not quite mature specimens from 

 a Sand Martin {Cotyle riparia), near Dunbar, Aug. The hosts given by Piaget 

 are Swallow and Sand Martin. 



M. thoracicum, G. — Under this name I place a Menopon, with long thorax 

 showing mesothoracic angle, of which several examples occurred on a Blackbird 

 and two on a Swallow, at a farm near East Linton, last July. They are very 

 similar to Piaget's figure of rusticum, but must, I think, be referred to thoracicum, 

 which was described from the Mistle- Thrush. Colour yellowish white with fine 

 blackish margins and head-spots. 



M. carduelis, D. — One from Willow Warbler (PhyUoscopus trochilus), and one 

 from Redstart (Phoenicurus phcenicurus), Barnsness lighthouse, near Dunbar, May 

 1912. A dark fuscous species, as in Denny's figure. The birds were sent to 

 me together, in the same parcel, which makes the question of the host uncertain 



Menopon spp. — Besides those recorded above I have specimens belonging to 

 this genus from the following other Passeres : Song-Thrush, East Linton, July ; 

 Bed-backed Shrike (Lanius collurio), Isle of May, May 1911 : and Pied Wagtail, 

 Dunbar, June 1885. Specimens from a Blackbird, Edinburgh, Sept. 1907, are the 

 same as those from the Song-Thrush. In the present state of our knowledge, the 

 satisfactory determination of these from books seems hardly possible. Those from 

 the Thrush and Blackbird may be Denny's M. citrinellce (which Piaget makes a 

 synonym of pusillum, N.) ; as may also that from the Wagtail, though it is more 

 like his sinuatum ( = minutum, N.). The two specimens from the Shrike are very 

 similar to those from the Blackbird, but they may be Denny's fuscocinctum from 

 the former bird — they certainly do not seem to be Piaget's inaquale. 



M. pal idum, N. — From Domestic Fowl, Edinburgh, Dunipace, etc ; and young 

 Pheasant, hatched under domestic fowl, Dalmeny, July 1906. 



M. latifasciatum, P. — A Menopon from Black Grouse, West Fife, May 1906, 

 seems at most but a variety of this species (described from a Capei'caillie). 



M. pallescens, 1ST. (per/Iicis, D.)— Two Partridges — old and young — found dead 

 on the railway near Dunbar, last Sept., yielded this in plenty. 



M. croctum, 1ST. — A specimen from a Bar-tailed Godwit, Aberlady Bay, 

 Aug. 1886, is referable to this form rather than to the next. Has been recorded 

 from a Godwit in America. 



M. lutescens, N\ — From Lapwing's nest, Aberlady, May 1906 ; Ringed Plover, 

 Scoughall, Sept. 1886 ; Ruff, Luffness, Sept. 1887 ; Knot, Aberlady Bay, Dec. 1885 

 and Sept. 1888; Curlew Sandpiper, Aberlady Bay, Sept 1885 (the last two are 

 small and may be a variety) ; and [Dunlin, Edenmouth, near St Andrews, 

 Aug. 1886]. Also from Guillemot, Aberlady, Jan. 1910, and North Berwick, 

 Jan. 1912; Razorbill, North Berwick, Jan. 1912 ; and Little Auk, North Berwick, 

 Lasswade, and Dalmeny, same date. With such diverse hosts as Waders and 

 Auks, some variation is to be expected ; Piaget points out some differences in the 

 case of specimens from the Razorbill, and I have above (p. 267) referred to the 

 possibility of those from the Little Auk being a distinct variety (see Fig. 3). 



M. tridens, N. (scopulacorne, D.) —From Coot, Gosford, May 1890; Spotted 

 Crake, Dunbar, Aug. 1901 ; Moorhen, Loch Leven, May 1912 ; and Little Grebe, 

 Dunbar, Jan. 1907. 



M. fuscofasciatum, P. 1 — A specimen from an Arctic Skua, Aberlady Bay, Sept. 

 1884, probably belongs to this form. 



M. albofasciatum, P.^Two from Sheld-duck, East Fife, Sept. 1906. 



