ee a as ee TT I 
248 INSECTS AFFECTING DOMESTIC ANIMALS. 
Lemobothrium similis Kellogg. 
New Mallophaga, p. 153, Pl. XIV, figs. 1 and 2. 
On Colymbus nigricollis californicus, Lawrence, Kans. (Kellogg). 
Trinoton luridum Nitzsch. 
Figured (?) Redi. Pl. X (vide Piaget); Albin., Aran., pl. 48. 
Trineton luridum Nitzsch Germar’s Mag. Vol. III, p. 300; Stephen’s Cat., Vol. II, p.334; Bur- 
meister, Handbuch Vol II p.441; Denny, p. 234, Pl. XXII, fig.2; Giebel, p. 258, Pl. XVIII, 
HOE 
(?) Trinoton gracile Grube. Middendorff's Reise, p. 494. 
(2) Trinoton conspurcatum Gurlt. Vol. VIII, p.438; Pl. IV, fig.15; PI. IT, fig. 6. 
Trinoton luridum Piaget, p.591. Pl. XLIV, fig.3; Osborn, Bull.7, Div. Ent., Dept. Agr. 
This is a very common species on various kinds of ducks, I have 
met with ita number of times myself, and have noted itin collections of 
the National Museum, the Cassino collection, from the Mergus serrator, 
Bruner collection, Keliogg collection, etc. 
Kellogg records it from Spatula clypeata, Merganser serrator, Anas caro- 
linensis, Dafila acuta, Anas boschas, and Anas americana (Lawrence, 
Kans.), and Hrismatura rubida (Monterey, Cal.). 
Trinoton lituratum Nitzsch. 
Germar’s Mag., Ent. 1818, Vol. III, p.300; Burmeister Handbuch, Vol. II, p. 441; Giebel, Insecta 
Epiz., 1874, p. 259; Piaget, Les Pédic., 1880, p.597; Osborn, Bull. 7, Div. Ent., Dept. Agr., p. 52. 
Trinoton squalidum Denny, Monog. Anop. Brit.. 1842, p. 235, Pl. XXII. fig. 3; Giebel, Insecta 
Epiz., 1874, p. 259. 
A specimen in the Cassino collection referred to this species is cred- 
ited to the blue-winged teal. It has generally been credited to the 
goose. Kellogg records it from Dajila acuta and Merganser serrator, 
Lawrence, Kans. 
Trinoton minor, n. sp. 
Light brown, with fuscous markings, much smaller than other members of the 
genus. Head subtriangular, with obtuse clypeus and temporal lobes rounded in 
front; antennal pits covered by rounded swelling; eyes divided, prominent; head 
below the eyes heavily fringed with short hairs; temporal lobes with four long 
bristles, a blackish patch in front of the orbital swelling, and a reddish-brown 
patch just within and behind the eyes; occiput with a blackish margin and two 
diffuse brownish bands running forward to join the blackish patches in front; pro- 
thorax with lateral angles produced anteriorly, narrowed behind, a fuscous submar- 
ginal band laterally ; mesothorax short, with an angular process in front; metathorax 
longer, margin curved; legs robust; coxe large; tarsal pallettes fully developed; 
first and third pairs of legs wanting in specimen; abdomen rather narrow, tapering 
posteriorly; lateral angles set with long bristles; eighth segment set at posterior 
margin with two bristles at each side, which are longer and stronger than the others. 
Length, 2.67 mm.; head, 0.59 mm.; thorax, 0.94 mm.; abdomen, 1.14mm. Width, 
0.84 mm.; abdomen, 0.87 mm. 
Described from a single specimen in the Burnett collection, No. 102. 
“‘ Butter-bill coot,” (Oidemia). 
Physostomum frenatum Nitzsch. 
Burmeister, Handbuch, Vol. II, p. 442; Giebel, p. 256, Pl. XVIII, fig. 6; Piaget, p. 606. 
From golden-crowned kinglet, Laurent collection. Very similar 
forms from Passerella iliaca, Cassino collection, and Pipile erytroph- 
thalmus, from Dr. Merriam. 
Physotomum lineatum nN. sp. 
Light brown unicolorous, except for brown line parallel to sides of thorax and 
abdomen. Small for the genus. 
Head subconic, sides very slightly concave, front rounded with a few very short 
