NEW MALLOPHAGA. 475 



temporal angles more convexly rounded ; metathorax ob- 

 tusely angled on abdomen, and with transverse blotch, 

 with posterior margin not parallel with the posterior mar- 

 gin of the segment; thorax relatively broader than in 

 communis. Measurements of male: Body, length 1.72 

 mm., width .75 mm.; head, length .59 mm., width .56 

 mm. Female: Body, length 2.12 mm., width .90 mm.; 

 head, length .63 mm., width .63 mm. 



Docophorus domesticus n. sp. (Plate lxv, fig. 4.) 



Males, females, and young taken from the Purple Mar 

 tin, Progne subis (Lawrence, Kansas). Most nearly like 

 Nitzsch's excisus (Giebel, Insecta Epizoa, p. 88, pi. xi, 

 figs. 1, 2, 3) found on Hirundo urbica and Cypselus 

 afius, but markedly larger. Piaget calls excisus one of 

 the smallest Docophori known, and gives the average 

 length of the males as 1. to 1.1 mm., and of the females 

 as 1.2. My specimens average in length, males, 1.47 

 mm., females, 2 mm. 



Description of the male. Body, length 1.47 mm., 

 width .59 mm. ; thorax and head pale golden brown, with 

 light brown markings; abdomen darker, with large dark 

 brown lateral blotches. 



Head, length .5 mm., width .48 mm.; front of clypeus 

 emarginated rather squarely, the bounding mesal angles 

 of the clypeus nearly rectangular; a longish prominent 

 hair rising from the dorsal surface near the margin in 

 each rounded latero-anterior angle of the clypeus, a short 

 marginal hair behind it, another at the suture, two others 

 close together and rising from the dorsal surface near the 

 margin behind the suture, and a single short, marginal 

 hair just in front of the trabecular; the trabecular large, 

 acutely pointed, reaching middle of segment 2 of an- 

 tennae; antennce, if projected backwards, reach the 



