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SUBORDER MALLOPHAGA. 217 
Docophorus compar Piaget. 
Piaget, p. 61, Pl. VII, fig. 1. 
From Lowxia c.-minor, Ames, Iowa. 
Docophorus bassane Denny. 
Monog. Anop. Brit., p. 110, Pl. VI, fig. 3, Pl. VO, fig. 3. 
Host unknown, probably the gannett (Burnett collection), 
Docophorus fissiformis Denny. 
Monog. Anop. Brit., p. 84, Pl. I, fig. 2. 
On ‘“ black-billed sandpiper” (Burnett collection). 
Docophorus testudinarius Denny. (Fig. 1, Pl. II.) 
Denny, p. 96, Pl. I, fig. 6; Piaget, p. 83, Pl. VI, fig. 5. 
From curlew “Numenius longirostris,” Ames, lowa. Specimens from 
this bird agree so closely with the figures and descriptions of the above 
species occurring on the related Numenius arquatus of Europe that I see 
no occasion to give ita separate description. On Bartramia longicauda. 
(Burnett collection.) 
Docophorus bisignatus N. 
Insecta Epiz., p. 106, Pl. 1X, fig. 9; Piaget, Les Pédic., p. 92. 
On Ibis alba; collection of C. B. Cook. 
Docophorus sphenophorus Nitzsch. 
D. phatalee Denny, p. 100, P1.1V, fig. 9. 
A specimen of this well-marked species in the Cassino collection is 
without indication of host or locality, but it is doubtless American, 
probably from spoonbill. 
Docophorus pertusus Nitzsch. 
Recorded by Kellogg, from coot (Fulica americana) at Monterey, 
Cal., and Lawrence, Kans.; also from ruddy duck (Hrismatura rubida) 
at Monterey, Cal. 
Docophorus lari Fabr. 
Pediculus lari Otto Fabricius, Fauna Groenlandica, p. 219. 
Docophorus lari Denny, p. 89, Pl. V, fig.9; Piaget. Les Pédic., p.111, Pl. IX, fig. 7. 
From herring gull (Cassino collection) and Larus philadelphia (Bur- 
nett collection). Also recorded by Kellogg from several species of 
gulls in California. 
Docophorus colymbinus Denny. 
Monog. Anop. Brit., p. 80, Pl. VIII, fig. 8. 
On Urinator lumme (Burnett collection). 
Docophorus icterodes Nitzsch. 
Nitzsch, Germar’s Mag., Vol. III, p.290; Denny, p. 102, Pl. V, Fig. 11; Giebel, Vol. II, pl. 10, 
fig.8; Piaget, p. 114, Pl. X, Fig. 1; Osborn, Bull. 7, Div. Ent., U.S. Dept. Agr., p. 31. 
A very common species on many kinds of ducks. Specimens have 
been noted in the Cassino, Burnett, and Stejneger collections, and also 
taken at Ames, lowa. The Burnett specimen shows the clypeus more 
quadrate than in other specimens, especially many specimens taken at 
Ames in which the clypeus is quite decidedly rounded at lateral mar- 
gin. Recorded also by Kellogg. 
Docophorus cygni Denny. 
Denny, Monog. Anop. Brit., p.95; Giebel, Epiz.; Piaget, Les Pédic., p. 115, fig. 3, Pl. X. 
From swan (Olor buccinator (?)), Ames, lowa. Very abundant. 
