THE LEECHES OF JAPAN. 389 
to have one pair of eyes and no denticles. Several species of 
Bdella have been said to be without denticles ; but Peters,' 
according to Leuckart, affirms that denticles are present. In 
Leuckart’s collection is a Leech labelled Bdella nilotica’ 
from Port Natal. The esophagus has six folds, and three 
small edentate jaws on alternate folds. Paired rudiments of 
denticular roots were found along each side of the median 
crest of the jaw. This Leech has the large oval segmental 
papille seen in H. saigonensis, H. maculosa (Singapore), 
H. javanica, H. multistriata (Ceylon), with the same 
inclination shown in fig. 56, Pl. XX. 
Kinberg has described three species with “edentate max- 
ille,’—D. decemstriatus from Montevideo, D. natalensis 
from Port Natal, and D. maculatus from Wisconsin. 
Verrill’ found “no distinct maxille” in Lemiscolex 
grandis, and mentions none in the case of Hexabdella 
depressa. 
LerrostoMA ACRANULATUM, g. et sp.nov. Pl. XIX, figs. 
40—46. 
Diagnostic Characters. 
Body attains a greater length than in H. nipponia; 
general form and proportions are the same. 
Length, swimming, 9-10 cm.; in extension, 12-15 cm.; at rest, 7-8 cm. . 
Width ‘3 10 mm. ; a 7 mn; >»  I4mm. 
Cephalic lobe smaller than in Hirudo, but larger than 
in L. edentulum. 
Acetabulum comparatively small, circular, 3 mm. in 
diameter. 
Annuli 104, with sometimes a trace of a 105th behind the 
anus. 
1 ¢ Berl. Monatsber.,’ 1854. ‘ Leuckart’s Bericht.,’ 1854-5, p, 359. 
2 Ts not this Democedes natalensis, Kinberg? 
3 “American Journal of Science,’ iii, p. 136, 1872; ‘ Report of Com. of 
Fish and Fisheries,’ for 1872-73, pp. 672, 673. 
