HIEUDINEA 



319 



Fig. 502 



Olossiphonia 



stagnalis 



(Sussw. 



F. Deut.). 



G. rugosa (Verr.). Body rough and papillose; color variegated, 

 spotted irregularly with yellow and green; 2 eyes; length 5 cm.: abun- 

 dant under stones in run- 

 ning water. 



G. stagnalis (L.) 

 (Fig. 502). Body small, 

 rather elongate, grayish 

 or pinkish in color, and 

 25 mm. long by 2 mm. 

 wide when extended; 10 

 mm. long at rest; annu- 

 lation distinct; 2 eyes; 

 between rings 12 and 13 is a con- 

 spicuous brown, cuticular plate; crop 

 with but one pair of pouches: in 

 ponds and sluggish streams, where it 

 feeds on small snails; very common; 

 Europe; very active in its move- 

 ments. 



G. heteroclita (L.) (Fig. 503). Body 

 transparent, yellowish or brownish in 

 color, about 10 mm. long and 3 mm. 

 wide, and with indistinct rings; 6 eyes 

 arranged in pairs at the corners of a 

 triangle: in ponds and sluggish 

 streams ; Europe. 



2. HEMICLEPSIS Vej- 

 dovsky. Anterior sucker 

 pedunculate; body wide 

 and flat: several species. 

 B. carinata Verrill. 

 Body 35 mm. long, rather 

 slender ; color greenish 

 with longitudinal stripes ; 

 eyes 2, conspicuous : com- 

 mon in streams, some- 

 times attached to frogs 

 or toads. 



Fig. 503 



Glossiphonia 



heteroclita 



(Siissw. F. 



Deut.). 



Fig. 501 Glossiphonia elegans 

 diagram showing the digestive and 

 genital tracts, seen from the dorsal 

 surface, the somites being numbered 

 on the left and the rings on the 

 right side (Castle), an., anus ; br., 

 brain ; cr., crop ; in., intestine ; ov., 

 ovary ; pr., proboscis ; p.s., poste- 

 rior sucker ; si., salivary glands ; 

 st., stomach ; t., testis ; d 1 , male 

 genital pore ; 9, female genital pore. 



ORDER 2. GNATHOBDELLIDA. 



Fresh-water and terrestrial leeches without a proboscis and usually 

 with 3 jaws (Fig. 497, A) ; blood red: 2 families, 



