462 KELLOGG AND KUWANA 



Female. — Body, length 1.55 mm., width .58 mm.; head, length 

 .51 mm., width .5 mm.; abdomen, elongate ovate; segments i to 7 

 with elongate narrow, dark brown triangles, with acute apex inward ; 

 each segment with several pustulated hairs along the posterior margin 

 of the triangle ; segment 8 wholly colored, segment 9 paler than 8 but 

 wholly colored ; posterior end usually emarginated. 



DOCOPHORUS MELANOCEPHALUS Burmeister. 



BuRMEiSTER, Hand. b. d. Ent., ii, p. 426, 1839. — Kellogg, List of Mallo- 

 phaga, p. 44, 1899. 



Two specimens, male and female, from Sterna fuliginosa from 

 Clipperton Island, a female from Anous galapagensis from Narboro, 

 and a male from Nesomimus viacdonaldi from Gardner. This is the 

 common parasite of terns. The female specimen from Anous varies 

 in having the transverse blotch of the first abdominal segment not 

 continuous across the segment but divided into two lateral blotches. 



DOCOPHORUS ICTERODES Nitzsch. 



NiTZSCH in Germar's Mag. f. Ent., vol. iii, p. 290, 18 18. — Kellogg, List 

 of Mallophaga, p. 45, 1899. 



A single female from Sterna fuliginosa from Clipperton Island. 

 This is the common parasite of ducks. 



DOCOPHORUS PERISTICTUS sp. nov. 



(PI. XXVIII, fig. 2.) 



Numerous males and females from Sterna fuliginosa from Clipper- 

 ton Island, one specimen from Dendroica aureata from Albemarle 

 and a single specimen from JVesofnimus carringtoni from Barrington. 

 A well marked form with unusually short blunt head, and very heavy 

 abdominal blotches. 



Male. — Body, length 1.83 mm., width .91 mm.; dark chestnut 

 brown, abdominal margin black. Head, length .61 mm., width .75 

 mm. ; front slightly convex with a narrow uncolored border, and a 

 short hair in each anterior angle ; two short marginal hairs in front of 

 the distinct suture ; trabecule small ; eye inconspicuous, with two 

 long hairs ; temporal margins with three long hairs ; occipital margin 

 flatly convex, bare ; signature shield-shaped, golden yellow, with acu- 

 minate posterior dark point, which does not reach the mandibles ; 

 antennae five-segmented, segment 2 longest, 3, 4 and 5 subequal ; 

 color pale brown, with a few hairs ; angulated antennal bands, their 

 continuations in front of the sutures as narrow marginal borders, the 



