810 PROTOZOOLOGY 



endocommensals in the colon of wood-feeding roaches, Panesthia 

 javanica and P. spadica. Several species. 



C. panesthiaeK. (Fig. 346, a, b). Broadly fusiform with bluntly 

 pointed anterior end and truncate posterior end; 87-156 (123)^ 

 by 53-78(62)ju; peristomal projection about one-fifth the body 

 length; peristome is nearly enclosed; macro nucleus massive; a vesi- 

 cular micro nucleus on its anterior border; karyophore separates the 

 endoplasm into 2 parts: anterior part with glycogenous platelets, 

 posterior part with numerous food particles; often parasitized by 

 Sphaerita (p. 893); in the colon of Panesthia javanica and P. spadica 

 (Kidder, 1937, 1938). 



Genus Paraclevelandia Kidder. Elongate pyriform; body rigid; 

 posterior end truncated obliquely to left; no peristomal projection; 

 one macro nucleus and one micro nucleus; at anterior end, there is a 

 sac connected with the karyophore, which is said to be a "macro- 

 nuclear reservoir"; endocommensals. 



P. brevis K. (Fig. 346, c-d). Conical in shape; 16-38 (38)/z by 9-21 

 (19)m; macronucleus spherical to elongate ellipsoid; micro nucleus 

 comparatively large, retains nuclear stains longer than macronu- 

 cleus; anterior sac may sometimes be absent; cysts, 14-19/z long; 

 ovoid; with a spherical macronucleus and a micro nucleus; in the co- 

 lon of Panesthia javanica and P. spadica (Kidder, 1938). 



Family 8 Peritromidae Stein 



Genus Peritromus Stein. Ovoid; ventral surface flattened, dorsal 

 surface with hump of irregular outline bearing a few stiff cilia; 

 ciliary rows only on ventral surface; a small undulating membrane 

 at posterior end of peristome; short marginal spines; 2 macro- and 2 

 micro-nuclei; salt water. 



P. emmae S. 90-10CV long; creeping on bottom; Woods Hole. 



P. calif ornicus Kirby (Fig. 346, e). Peristome short; left margin 

 slightly concave; dorsal hump with wart-like protuberances, bear- 

 ing spines (about 12/z long); 16-19 or more ventral ciliary rows; 2 

 spherical macronuclei, one anterior right and the other posterior 

 left of hump; micronuclei 4 (2-5); 89-165^ by 60-96/i; salt marsh 

 pools with salinity "1.2-6 per cent" in California (Kirby, 1934). 



Family 9 Licnophoridae Stevens 



Genus Licnophora Claparede. Discoid; body roughly divisible 

 into basal disc, neck and oral disc; basal disc for attachment, with 

 several concentric ciliary coronas; neck flattened, contractile nar- 

 rowed part with or without a ventral furrow and fibril-bundles 

 (both running from oral groove to basal disc) ; oral disc highly flat- 



