MALLOPHAGA FROM BIRDS 47 1 



the rounded anterior angles, and two before the small but distinct 

 trabeculte ; trabeculae small, uncolored ; antennae long, segment 2 

 longest, segments 3, 4 and 5 slightly colored ; eyes prominent, with 

 one long hair ; temporal margin flatly rounded with three long hairs 

 and some few prickles ; occipital margin slightly convex, bare ; anten- 

 nal bands brown, meeting in front and bending diagonally in posterior 

 end ; narrow blackish brown temporal margin, paling gradually in- 

 ward from margin of head. Prothorax short, rectangular, with single 

 long hair in posterior angles ; brown lateral borders bent inward on 

 posterior margin. Metathoi'ax trapezoidal, posterior margin straight; 

 four long pustulated hairs on each lateral third of the posterior margin, 

 and a prickle in the posterior angle. Legs concolorous with thorax, 

 with dark margin. Abdomen narrowest anteriorly, widening pos- 

 teriorly to segment 5, segment 6 slightly narrow, segments 7, 8 and 9 

 short ; posterior angles of each segment with one to two hairs and a 

 single curving transverse series of long pustulated hairs on dorsum of 

 each segment ; each of seginents 2 to 7 with a marginal dark brown 

 blotch, widest posteriorly and projecting inward along the posterior 

 margin of segment ; golden brown, broad, transverse blotches entirely 

 across all segments ; posterior margin of last segment is rounded. 



Female. — Body, length 2.2 mm., width .63 mm.; head, length 

 .58 mm., width .43 mm. ; last abdominal segment slightly emarginated 

 with a few pustulated hairs. 



NIRMUS GALAPAGENSIS sp. nov. 

 (PI. XXIX, fig. 5.) 



Many males and females from 4 specimens of Geospiza fuliginosa., 

 3 from Albemarle and one from Chatham ; G. fortis from Albemarle 

 and Narboro ; G. conirostris from Hood ; G. dubla from Chatham ; 

 2 specimens from JVesomifnus macdonaldi from Hood ; N. -parvulus 

 from Narboro ; N. carringtoni from Barrington ; N. ?nclanotts 

 from Wenman ; 2 specimens from Camarhynchus productus from 

 Albemarle ; C. variegatus from Narboro ; Pyrocephalus intercedens 

 from Narboro ; P. dubius from Chatham ; Certhidea albemarli from 

 Albemarle ; Myiarchus magfiirostris from Albemarle ; Coccyzus 

 melanocephalns from Chatham; Actitis inacularia from Albemarle, 

 and Procellaria tethys from Albemarle. 



Most like N. simplex^ from Alerula migratoria from Kansas, but 

 distinctly different in size, in absence of the strong transverse blotches 

 of abdomen, and in relatively broader abdomen. 



'Kellogg, New Mallophaga, 11, p. 492, pi. lxvii, fig. 2, 1896. 



