May, 1908.] Descriptions of New Mallophaga. III. 
357 
named were only aberrant members of the genus Menopon. 
Professor Kellogg in Psyche, XV, p. 11, gives a systematic sum¬ 
mary of the Mallophaga of the World, but makes ho mention 
of this genus. However, it seems to the writer that the two speci¬ 
mens under consideration hardly can be placed in the genus 
Menopon. They agree closely with Piaget’s description and 
figure, and the occipital tubercles, as Burmeister says, “cum 
processu .pronoti chelam formante,’’ have not their counterpart 
among the Menopon species so far as I have observed. 
9. Nirmis selliger Nitzsch. (New host.) Piaget, Les 
Pediculines, 1880, p. 197, plate XVI, fig. 2. 
Two males and two females taken from the Common Tern, 
Sterna hirundo, on Hen Island, Lake Erie, by Professor Jas. S. 
Hine. 
10. Physostomum invadens Kell. Fig. 1 G. A single 
specimen taken from Dendroica pennsylvanica at Columbus, O., 
by Professors Osborn and Hine. 
This single female specimen conforms quite closely to the 
description by Professor Kellogg in New Mallophaga III, Kel¬ 
logg and Chapman, p. 50, the only apparent difference being 
that it is a little more slender as shown by the following dimen¬ 
sions: Body, length 3.06 mm., width .68 mm.; head, length .70 
mm., width .53 mm. 
11. Docophorus syrnii [Packard?], fig. 1 I. 
Female. Body, length 2.08 mm., width .92 mm., margin of 
abdomen, legs, and head colored a golden brown. 
Head. Length .67 mm., width .66 mm., front obtusely angu¬ 
lar with a slight acuminate projection at middle, one medium, 
and one short hair at each lateral angle; two small hairs in front 
of clypeal suture and two larger ones in front of trabecula; tra¬ 
becula not so prominently curved as in D. communis, reaching 
a little beyond first segment of antenna; eye prominent and with 
a short curved hair above; temples broadly rounded, the distance 
from eye to prothorax divided into three nearly equal spaces by 
two long hairs, these spaces again nearly bisected by three short 
bristles; occiput perceptibly curved backward; signature distinct 
but not strongly marked; head rather uniform light brown, except 
antennal and occipital bands are distinct. 
Prothorax with straight sides slightly diverging; a hair at 
posterior angle. Metathorax of equal length with prothorax, 
several hairs in rounded posterior angle; posterior margin nearlv 
straight, with a row of pustulated hairs. Legs pale brown with 
dark brown markings on anterior margins. 
Abdomen broadly elliptical, anterior segments scarcely pro¬ 
jecting, posterior ones a little more so; two or three hairs at each 
posterior angle; short lateral transverse blotches with inner ends 
rounded; last segment deeply emarginate. 
