SPOROZOA, GREGARINIDA 449 



T. pulcher S. (Fig. 208, i). Cysts 303-3 16m in diameter; spores 

 9.7/1 by S.Sfi; in gut of Scutigera sp. 



Genus Nina Grebnecki {Pterocephalus Schneider). Protomerite 

 made up of 2 long narrow horizontal lobes fused and upturned 

 spirally at one end, peripheral portion with many teeth, from which 

 project long filaments; spores in chain; in gut of myriapods. 



N. gracilis G. (Fig. 208, j, k). 1.5-5 mm. long; cyst spherical; 

 spores ellipsoidal; in the gut of Scolopendra cingulata and S. suhspini- 

 pes. Goodrich (1938) studied the organism recently. 



Genus Setic^phalus Kamm. Protomerite with closely set brush- 

 like bristles. 



S. elegans (Pinto) (Fig. 208, I). Sporadins up to 75m by 35/x; cysts 

 and spores unknown ; in gut of Scolopendra sp. 



Genus Acutispora Crawley. Solitary; pseudocyst; spore biconical, 

 with a thick blunt endosporal rod at each end. One species. 



A. macrocephala C. (Fig. 208, m). Sporadins up to 600m long; cysts 

 spherical, 410m in diameter; spores navicular, slightly curved, 19m 

 by 4m; in gut of Lithohius forficatus. 



Genus Metamera Duke. Epimerite eccentric, bordered with 

 many branched digitiform processes; cysts without ducts; spores 

 biconical. 



M. schuhergi D. (Fig. 208, n). Sporadins 150m by 45m; spores 9m 

 by 7m; in gut of Glossosiphonia complanata and Placobdella margi- 

 nata. 



M. reynoldsi Jones. Sporadins with epimerite measure 280m by 

 50m; cysts spherical; dehiscence by rupture; spore biconical, 5m by 

 3m, with 8 sporozoites; in the stomach diverticula and intestine of 

 Glossosiphonia complanata. 



Genus Hentschelia Mackinnon and Ray. Epimerite with a short 

 neck, umbrella-like with its margin divided into 4-5 lobes, each 

 fluted on anterior surface; 2 sporadins encyst together; gametes 

 anisogamous; flagellate and non-flagellate; zygote gives rise to a 

 spherical spore with 8 sporozoites. One species. 



H. thalassemae M. and R. (Fig. 208, o, p). Cephalins 75-98m by 

 30-45m ; in gut of Thalassema neptuni. 



Genus Lecythion Mackinnon and Ray. Epimerite a low cone, sur- 

 rounded by 14-15 petal-shaped lobes, with a neck; cysts and spores 

 unknown. 



L. thalassemae M. and R. (Fig. 208, q. r). Cephalins 135m by 52m; 

 epimerite about 27m long; in gut of Thalassema neptuni. 



