240 



TEOCHELMINTHES 



1. BRACHIONUS Pallas. Lorica arched dorsally, flattened ventrally; 

 1 red eye: numerous species, some marine. 



B. rubens Ehrenberg (Fig. 387). Six straight spines on anterior 

 margin; no posterior spines; color pinkish: often common. 



B. bakeri 0. F. Miiller. Six spines on anterior margin, the 2 

 middle ones curving outward; 2 lateral spines on posterior margin may 

 be long, short, or absent ; length .25 mm. : often very common. 



Fig. 386 



Fig. 387 



Fig. 388 



Fig. 386 Pterodina patina (Siissw. F. Deut.). Fig. 387 Brachionus rubens (Siissw. 

 F. Deut.). Fig. 388 No tens quadricornis (Stissw. F. Deut.). 



B. militaris Ehr. Foot jointed; lorica with 10 anterior and 4 pos- 

 terior spines, its surface facetted and covered with raised points; 

 length .25 mm. 



2. NOTETJS Ehrenberg. Foot jointed; lorica oval and with 2 ante- 

 rior and 2 posterior spines; no eye: 1 species. 



N. quadricornis Ehr. (Fig. 388). Dorsal surface facetted, whole 

 surface roughened; length .35 mm. 



FAMILY 4. DINOCHAEIDAE. 



Lorica more or less cylindrical and usually with an 

 anterior dorsal projection over the head; foot very long 

 with 2 long toes: 4 genera. 



1. SCARIDIUM Ehrenberg. Lorica vase-shaped, smooth, 

 and transparent, without the dorsal projection; 1 eye; 

 foot and toes very long: several species. 



S. longicaudum (0. F. Miiller) (Fig. 389). Body 

 cylindrical; toes and foot longer than the rest of the 

 body; .4 mm. long. 



2. Stephanops Ehrenberg. Head covered with a large 

 semicircular shield; foot and toes not usually long; 1 to 3 

 long movable spines project from the back : several species. 



S. longispinatus Tatem. One long spine from the middle of back; 

 length .15 mm. 



Fig. 389 



Scaridium 



longicaudum 



(Siissw. F. 



Deut). 



