SUCTORIA 873 



Genus Hallezia Sand. Without lorica; with or without a short 

 stalk; tentacles in bundles; fresh water. 



H. brachypoda (Stokes) (Fig. 371, d). 34-42/* in diameter; in stand- 

 ing water among leaves. 



Genus Solenophrya Claparede and Lachmann. Lorica attached di- 

 rectly with its under side; body usually not filling lorica; tentacles in 

 fascicles; fresh water. 



S. inclvsa Stokes (Fig. 371, c). Lorica subspherical; about 44/x in 

 diameter; standing fresh water. 



S. pera S. (Fig. 371, /). Lorica satchel-form; about 40-45/z high; 

 body about 35/z long; standing fresh water. 



Genus Acinetopsis Robin. Lorica in close contact with body on 

 sides; stalked; 1-6 large retractile tentacles and numerous small 

 tentacles from apical end ; mainly salt water. 



A. tentaculata Root (Fig. 371, g, h). Lorica 187/x high; stalk 287/z 

 long; large tentacles up to 500/z long; body about 138/z by 100/x; on 

 Obelia commissuralis and 0. geniculata; Woods Hole (Root, 1922). 



Genus Tachyblaston Martin. Lorica with short stalk; tentacles 

 distributed on anterior surface; nucleus oval; salt water. One species. 



T. ephelotensis M. (Fig. 371, i,j). Lorica 30-93m high; stalk 20-30/x 

 long ; attached to Ephelota gemmipara. 



Genus Dactylophrya Collin. Cup-like lorica, filled with the proto- 

 plasmic body; with a short stalk; 12-15 arm-like tentacles from an- 

 terior surface; salt water. One species. 



D. roscovita C. (Fig. 371, k). About 40/t long excluding stalk; on the 

 hydrozoan, Diphasia attenuate/,. 



Genus Pseudogemma Collin. Attached with a short stalk to larger 

 suctorians; without tentacles; endogenous budding; swarmer with 4 

 ciliary bands; salt water. 



P. pachystyla C. (Fig. 373, a). About 30/u long; stalk 3-4/z wide; 

 swarmer 15/z by 9m; on Acineta tuberosa. 



Genus Endosphaera Engelmann. Spherical without lorica; without 

 tentacles; budding endogenous; swarmer with 3 equatorial ciliary 

 bands; parasitic in Peritricha; fresh and salt water. 



E. engelmanni Entz (Fig. 373, b). 15-41/x in diameter; imbedded in 

 the host's cytoplasm; swarmer 13-19/* in diameter; in Opisthonecta 

 henneguyi (p. 852), and other peritrichs. 



Genus Allantosoma Gassovsky. With neither lorica nor stalk; 

 elongate; one or more tentacles at ends; macronucleus oval or spheri- 

 cal; compact micronucleus; a single contractile vacuole; cytoplasm 

 often filled with small spheroidal bodies; development unknown; in 

 mammalian intestine. Species (Hsiung, 1930). 



