NEW MALLOPHAOA. 25 



8 with a trans vervse blotch, pale brown, darker out- 

 wardly, and behind not reaching the lateral margins; 

 segment 9 with two very small pale brown linear lateral 

 blotches, and feebly cmarginated behind. 



Nirmus audax n. sp. (Plate II, fig. 8). 



From the yellow-headed Tit, Auripamis jiaviceps 

 (Baja California). A member of the group interrupto- 

 fnsciati, of darker ground color and with much more 

 pronounced abdominal blotches than is usual in this 

 group (see vulgatus Kellogg, New Mallophaga, II, 1896, 

 p. 496, pi. Ixvii, fig. 5). 



Description of female. Body, length 1.6 mm., width 

 .58 mm.; rather short and broad for Nirmus, especially 

 of tlie interrupto — fasciati type; brownish ground with 

 dark lateral blotches on thorax and abdomen, and black- 

 ish lateral bands and marginal markings. 



Head, length .38 mm., width .41 mm.; the outline 

 being nearly that of an equilateral triangle with blunted 

 and curving apex and slightly convex legs; the margi- 

 nal hairs of the forehead are few and very small; trabec- 

 uUe distinct, uncolored; temporal margins with a long 

 hair in the rounded angle and several prickles; occipital 

 margin weakly concave laterally and weakly convex in 

 the middle; anterior part of forehead with nearly un- 

 colored ground, with two brownish linear blotches 

 bounding the oval fossa laterallv; rest of head brownish 

 with darker lateral borders and suggestions of occipital 

 and ocular bands; antenna^ colored. 



Prothorax short, rectangular, with a single hair in 

 posterior angles; color pale brownish in the middle, 

 with the lateral regions dark brown, darkest on lateral 

 margins. Metathorax angulated behind, with several 

 strong hairs along each latero-posterior margin; latero- 



