42 



by Diamare (Boll. soc. di naturalisti in Napoli, 1S93, ser. i, 

 vol. vii, p. 10), with C. diganopora of fowls as the type. 

 The following specimens (Path. Hist., 1672) are believed by 

 the writers to constitute a new species of this genus, to which 

 provisionally they would assign the name Cotugnia broivni. 1 

 The material was obtained at autopsy from the intestine of 

 a banded parrakeet, Palceornis fasciatus (P. Z. G. Lab., 1052), 

 along with a number of specimens of Spiroptera incerta, n. s. 

 There were included four strobiles, the largest 140 mm. in 

 length and apparently entire; two two-thirds to three-fourths 

 the length of the first and lacking the terminal links; and the 

 fourth only 5 cm. long and possessing no ripe segments. In 

 addition there were several fragments made up of ripe links, 

 evidently broken from one or other of the shorter strobiles. 

 The largest example attained its greatest width 100 mm. from 

 the head, where the segments were 4 mm. wide, diminishing 

 thence posteriorly, so that the terminal links were but 3.5 mm. 

 in width. The strobile included a few more than two hundred 

 segments. The head was small and short, with quadrate 

 front (Figs. 6 and 7) ; measured 0.3 mm. in length, and over 

 the front dorsoventrally 0.55 mm., laterally 0.6 mm. Four 

 prominent suckers, globose in shape, with full diameter of 

 0.2 mm., and circular orifice 0.05 mm. in diameter; suckers 

 unarmed. Rostellum of all the heads depressed, provided 

 with a circle (Figs. 6 and 8) of numerous (over two hundred) 

 small hooklets (0.012 to 0.014 mm. in length). Neck short. 

 First links (Fig. 7) much wider than long (0.4 mm. wide, 0.03 

 to 0.05 mm. long); immature links showing the developing 

 genital organs (60 to 80 mm. from head) from 2.5 to 3 mm. 

 wide and 0.5 to 1 mm. long; largest ripe links (100 to 110 mm. 

 from head), 4 mm. wide and 1.5 mm. long; terminal links, 

 3.5 mm. wide and 1.5 mm. long. Double genital apparatus 

 (Fig. 9); a genital pore on each lateral margin of link at first 



1 Named for Dr. Arthur Erwin Brown, Secretary of Philadelphia 

 Zoological Society. 



