Dec, i9'"2-] Carriker : New Mallophaga. 22.") 



Head, length .67 mm., width .55 mm. ; front slightly swollen laterally and flat'y 

 convex, without hairs ; sides nearly straight from eyes to the swelling of the front ; 

 eye distinct, completely filling the ocular emargination ; occipital angles acuminate 

 nearly reaching the lateral angles of the prothorax, and with two slender weak hairs ; 

 palpi projecting beyond sides of head by nearly last two segments ; a darker band 

 across the clypeus just in front of the palpi, on which are five short, stiff, dorsal hairs ; 

 a short marginal hair at anterior end of antenna] fossiie, and two short bristles on the 

 anterior margin of antenna! fossK. . Marking.? s'n-.ilr.r to ,7. ■/.-.'; y:.V, b;;t r.r.rro-.vfjr and 

 connected by a dusky hand ; a black blotch bounding the inner side, only, of the 

 antennal fossce, there being merely a black line bounding the outer margin ; margin of 

 temples narrowly dusky ; a narrow black occipital border, broken medially. 



Prothorax hexagonal, angles rounded ; lateral angles with one weak hau' and two 

 bristles ; a heavy blackish-brown border laterally ; two internal, parallel, brown lines 

 longitudinally ; bold black lines curving from lateral borders to anterior angles of 

 metathorax ; a long slender hair on posterior angles. 



Metathorax longer than prothorax ; light golden-brown ; sides sinuated, with one 

 slender hair at posterior angles. Anterior border and angles heavily banded with 

 blackish, broken medially ; submarginal lateral bands continuous with lateral bands 

 of abdomen, and cut medially by a curving black band, from whose outer antei ior 

 margin runs a lighter brown band nearly to anterior margin of segment. I-egs rather 

 slender, concolorous with body. 



Abdomen with nearly parallel sides, truncate anteriorly, with sharply marked, 

 heavy, pitchy-brown marginal bands, extending to the end of the eighth segment ; 

 posterior angles with a single slender hair ; vulva convex, margined with short hairs. 

 A pale brown median blotch on fifth and sixth segments. 



Two females from an Orange-crowned Warbler {Helmintliophila 

 celafa), Lincoln, Neb. Resembles augulaiiim somewhat in the mark- 

 ings of the prothorax, but has the heavy lateral bands of the abdomen, 

 marginal, as in lUffiisiDii, and is mtich smaller than either. 



Nitzschia pulicaris var. tibialis, var. nov. (PI. XXII, Figs. 4, 5.) 



Female. — Body, length 2.5 mm., width .95 mm.; head, length .5 mm., width 

 .66 mm.; front broadly rounded, with a slight emargination just behind the pro- 

 jecting palpi ; temples angular before and behind, with four long, pustulated hairs ; 

 occipital margin emarginate, with occiput convex, having four pustulated hairs arising 

 from within the narrow occipital band ; palpi projecting by a portion of the third and 

 the fourth segments ; front, between the palpi, with four short hairs ; one short and two 

 long hairs on each side at the anterior margin of the antennal fossa ; ocular fringe 

 distinct ; a dark band bordering the inner margin of the antennal fossa and passing 

 around the temples ; occipital bands parallel, running to the base of the mandibles ; 

 a short band running from mandibles to the margin at palpi; between the occipital 

 bands is a quadrilateral, formed by narrow bands, with bands running from its 

 anterior angles to the occipital bands near their junction with the mandibles, also 

 bands connecting its posterior angles with the base of the occipital bands. 



The prothorax hexagonal, lateral angles protruding and rounded, with one long 

 hair and two .short bristles; anterior margin sinuated, with a narrow marginal band ; 



