NEW MALLOPHAGA. 153 



An immature specimen taken from a Greenwinged 

 Teal, Anas carolinensis (Lawrence, Kansas), is almost 

 as large as the average adult, but is uniformly pale, faintly 

 tinged with clear brownish, showing no markings except 

 a distinct black ocular fleck and the brown mandibles. 

 The dimensions of this specimen are: Body, length 4.5 

 mm., width 1.43 mm.; head, length .81 mm., width 1.28 

 mm. 



Laemobothrium similis n. sp. (Plate xiv, figs. 1 and 2.) 

 A single specimen from an Eared Grebe, Colymbus 

 nigricollis calif ornicus (Lawrence, Kansas). This species 

 is very like Piaget's emarginatum (Les Pediculines, 1880, 

 p. 585, pi. xlviii, fig. 8), taken from Gall inula luema- 

 topus (Zool. Garden of Rotterdam), but lacks the occi- 

 pital bands of the head, has more of the peculiar, short, 

 flattened, stiff points on the front margin of the head, has 

 a very differently shaped prothorax (if Piaget's descrip- 

 iion and figure are accurate), lacks the strong markings 

 of emargination, and is a slightly larger species. My 

 specimen is probably not adult, but is of not earlier stage 

 than the last nymphal one. Adult specimens will measure 

 a little larger, and will be a little more strongly marked. 

 This genus has not before been found on a pygopodous 

 bird. 



Female, body, length 4.4 mm., width .87 mm.; uncol- 

 ored (weakly pale brownish) with narrow, sharp, brown 

 markings on head and thorax. 



Head, length 1. mm., width .78 mm.; ocular emargina- 

 tion slight, contraction of sides of head even with the 

 mandibles strong, sides of forehead slightly converging; 

 front with rounding emargination, angles rounding; on 

 each side of the center of the emargination toward the 

 angle are a short hair, a longer hair arising from ventral 

 surface, iwo short flattened spines, and projecting over 



