512 CALIFORNIA ACADEMY OF SCIENCES. 



flatly rounded behind, with a slight angular emargination, 

 the margin bordered by a narrow uncolored space. 



Male. Body, length 1.15 mm.; width .7 mm.; head, 

 length .34 mm., width .47 mm.: abdomen as wide as 

 long, suborbicular ; median uncolored region of abdomen 

 relatively larger than in female ; lateral transverse blotches 

 no more distinct than in female, but lateral bands more 

 strongly chitinized; posterior margin of abdomen broad, 

 straight, with projecting rounded ninth segment in the 

 middle; posterior border of ninth segment colored, the 

 margin with a few short strong hairs; genitalia extending 

 far forward. 



Goniocotes compar Nitzsch. (Plate lxix, fig. 4.) 



Germar's Mag. Entomol., 1818, vol. iii, p. 294. 



Pediculus bidentatus (?) Scopoli, Ent. Cam., 1763, p. 385. 



Philopterns compar Nitzsch, Walckenrer, Hist. Nat. Ins. Apt., 1844, 

 vol. iii, p. 358. 



Goniocotes compar Nitzsch, Burmeister, Handbuch d. Eut., 1835, p. 

 431; Gurlt, Mag. f. d. ges. Thier., 1842, vol. viii, p. 117, pi. iv, 

 fig. 2; Denny, Monograph. Anoplnr. Brit., 1842, p. 151, pi. xiii, 

 fig. 2; Giebel, Zeitsch. f. ges. Nat., 1861, vol. xviii, p. 305; 1. c, 

 1866, vol. xxviii, p. 389; Giebel, Insecta Epizoa, 1874, p. 183, pi. 

 xii, fig. 8; Piaget, Les Pediculines, 1880, p. 284, pi. xix, fig. 10; 

 Taschenberg, Die Mallophageu, 1882, p. 69; Osborn, The Pediculi 

 and Mallophaga Affecting Man and the Lower Animals, 1891, 

 Bull. 7, Div. of Eut., U. S. Dept. Agri., p. 33, fig. 19. 



Specimens taken from a Domestic Pigeon, Columba 

 livia (Lawrence, Kansas). This well known Goniocotes 

 of the Domestic Pigeon has been found by Piaget on 

 Cohimba -palumbus and C. -phasianella, and by Denny on 

 Columbus tvjias, C . pa/umba and (a variety, Denny thinks) 

 on C. turtur, as well as on the various races of the do- 

 mestic pigeon. It is a small form, only about i mm. 

 long, whitish, with a pale brownish border along the 

 lateral margins of the abdomen and thorax; the temples 

 are angled and bear two very long backward-projecting 



