APPENDIX 



PARASITES OF THE COCKROACH. 



Spirillum, sp. [Vibrio]. SCHIZOMYCETES. 



Rectum. 

 Ref. Biitschli, Zeits. f. wiss. ZooL, Bd. XXL, p. 254 (1871). 



Hygrocrocis intestinalis, Val. CYAXOPIIYCE^E. 



Filaments of a very minute Alga abound in the rectum of the 

 Cockroach, where this species is said by Valentin to occur. The 

 intestine of the Crayfish is given as another habitat. Leidy 

 observes that the filaments which he found in the rectum of the 

 Cockroach are inarticulate, and do not agree with Valentin's 

 description of the species. 



7?<?/. Valentin, Report, f. Anat. u. Phys., Bd. I., p. 110 (1836) ; 

 Robin, Veget. qui croissent sur 1'Homme, p. 82 (1847) ; Leidy, 

 Smithsonian Contr., Vol. V., p. 41 (1853) ; Biitschli, Zeits. f. wiss. 

 ZooL, Bd. XXL, p. 254 (1871). 



Endamcdba (Amoeba} JJlattcr, Biitschli. RHIZOPODA. 



Rectum. 



Ref. Siebold, Katurg. wirbelloser Thiere (1839) Jide Stein ; 

 Stein, Organismus d. Infusions-thiere, Bd. II., p. 345 (1867) ; 

 Biitschli, Zeits. f. wiss. ZooL, Bd. XXX., p. 273, pi. xv. (1878) ; 

 Leidy, Proc. Acad. N. S. Phil., Oct. 7th, 1879, and Freshwater 

 Rhizopods of N. America, p. 300 (1879). 



Gregarina (Clepsidrina) Jjlattarum, Sieb. GREGARIXIDA. 



Encysted in chylific stomach and gizzard ; free in large 

 intestine. 



7?e/. Siebold, Naturg. wirbelloser Thiere, pp. 56, 71 (1839) ; 

 Stein, Mull. Arch., 1848, p. 182, pi. ix., figs. 38, 39; Leidy, 

 Trans. Anier. Phil. Soc., Vol. X., p. 239 (1852) ; Biitchsli, Zeits. 

 f. wiss. ZooL, Bd. XXL, p. 254 (1871), and Bd. XXXV., p. 384 

 (1881) ; Schneider, Gregarines des Invertebres, p. 92, pi. xvii., 

 figs. 11, 12 (1876). 



