IQ22.] 



A. Oka : Hirudinea jrovi the Inle Lake. 



527 



to chelonians. In reality, however, the difference is very great, 

 as PI. emydae is a broad and flat species, measuring i3 - 5 mm. in 

 length by 9 mm. across. 



Glossiphonia annandalei, sp. nov. 



Localities : — Central region of Inle Lake. Eight specimens. 



Central region of Inle Lake. Two specimens, on Tata intha 

 Annandale (Mollusca Gastropoda, family Viviparidae). 



Shape and dimensions. Body rather long and slender, not 

 unlike Gl. stagnalis, anterior portion having the appearance of a 

 neck. The greatest width, which is about one-third of the length, 

 lies at about one-third of the length from behind. The head is 

 slightly broader than the neck. The body is not much flattened, 

 being convex on both sides, though more so on the dorsal than on 



CU. 



i-ir 



L-iV 



"' O. 



Text-fig. 3. — Glossiphonia annandalei, sp. nov. 



a. Outline of entire animal : X3. 



b. Somites i-ix, dorsal view : X30, 



c. Somites i-ix, ventral view : X 30. 



the ventral surface. The margins are sharp and serrate, but not 

 thinned out. The hinder sucker is small and directed ventrally 

 and backward. 



The largest example, somewhat contracted, measures 6 mm. 

 in length and 28 mm. in width. 



External features. The surface of the body is on the whole 

 smooth, all the papillae being low and insignificant. Neither 

 transverse nor longitudinal rows of particularly large papillae 

 could be observed. 



The oral sucker occupies the ventral surface of the first five 

 rings, ring 5, which is very narrow on the ventral side, forming its 

 posterior border. The small mouth-opening lies a little in front 

 of the middle of the sucker. 



There are three pairs of eyes, whose position is quite unique 

 among the Glossiphonidae. Two pairs are situated in the pos- 



