May, 1906.] 



Descriptions of New Mallophaga. 



529 



width as first segment of abdomen; narrow brown lateral bands extending 

 toward median line at front; similar incurved lines from lateral lines at 

 middle. Legs large, of same color as head. 



Abdomen, sides swelling, seventh segment narrowing, eighth evenly 

 rounded; segments of nearly equal length, transverse margins straight, 

 first, second, and third with one bristle, others with two bristles, at pos- 

 terior angle; last segment with fringe of small hairs on posterior border; 

 lateral line heavy and brown, broken at sutures with clear diagonal line; 

 eighth segment paler than the others. 



Described from specimen in Professor Herbert Osbom's col- 

 lection, taken from Pipilo maculatus megalonyx (Baird) at Ft. 

 Collins, Colo., by C. F. Baker. This species shows a considerable 

 resemblance to P. subangulatum Car. in the lines of the thorax 

 extending inward from the lateral line, but it is smaller and the 

 lines are narrower and shorter. 



Fig. 1. A, Physostomuin sub-hastatum, female from Pipilo macu- 

 latus megalonyx Baird. x 17. B, Physostomom serratum, female from 

 Otocoris sp. X 13. C. Menopon aegialitidis, female from Aegialitis 

 vocifera. x 33. 



3. Menopon aegialitidis sp. nov. (Fig. 1, C.) 



Female — Length, 1,30 mm., of golden-brown color, with darker trans- 

 verse bands on abodmen, metathorax and abdomen having an oval out- 

 line, spiracles prominent. 



Head, length, .29 mm., width, .48 mm.; front almost semi-circular, 

 temporal lobes broadly rounded, posterior concave, antennae large and 

 partly concealed in fossae, which have the broad inner border marked 

 by a band of brown; ocular fleck large, notch shallow; palpi small; two 

 large bristles in front of ocular notch, a row of fine hairs below it, and three 

 large bristles on temporal lobes ; large bristle at base of antennae and five 

 j-long occipital border; head tawny, a triangular blotch in middle of an- 

 terior sub-margin; narrow occipital band. 



