IO Records of the Indian Museum. [Mer alr 
Genus Hymenolepis, Weinland, 1858. 
= Diplocanthus, Weinland, 1858; = Lepidotrias, Weinland, 1858 ; = Dre- 
panidotaenta, Railliet, 1892 ; = Dicranotaenza, Railliet, 1892; = Echinocotyle, 
Blanchard, 1891 ; = 7riorchts, Clerc, 1903. ; 
Generic diagnosis:—Hymenolepidinae. Rostellum generally 
well developed, and armed with a single crown of hooks, or more 
rarely, rudimentary and unarmed. Suckers in adult rarely 
armed with hooklets of fine spines; are generally unarmed. 
Testicles three in each segment. Vas deferens with internal (7.c. 
inside the cirrus pouch) as well as external seminal vesicle (out- 
side the cirrus pouch). Sacculus accessorius generally absent. 
Adult in mammals and birds. 
Type-species :—Hymenolepis flavopunctata, Weinland, 1858. 
= Hymenolepis diminuta (Rudolphi, 1819) Blanchard, 1891. 
Sub-genus Hymenolepis, Weinland, 1858. 
Sub-generic diagnosis:—Hymenolepis. Rostellum generally 
well developed, and armed with a single crown of hooks, or more 
rarely rudimentary and unarmed. Suckers in adults generally 
unarmed, or, rarely, their entire surface may be covered with 
rudimentary spines. Sacculus accessorius generally absent. Adult 
in mammals and birds. 
Type-species :—Hymenolepis flavopunctata, Weinland, 1858. 
= Hymenolepis diminuta (Rud., 1819) Blanchard, 18q1. 
Hymenolepis capillaroides ? Fihrmann, 1906. 
ZEV £18* Corvus macrorhynchus. Calcutta. T. Southwell. Twenty-eight 
(Crow). specimens, 
The specimens under consideration are placed in the above 
species with a little uncertainty. The rostellum in every specimen 
was slightly damaged and the exact size and number of spines 
could not be determined. If not absolutely identical, our speci- 
mens are closely related to Hymenolepis capiliaroides, Fubrmann. 
The specimens measured 25 to 30 mm. long. The last seg- 
ments were ‘22 mm. long, ‘22 mm. broad, and the edges were 
slightly salient. In one specimen, only, which was more mature 
than the rest, and which had contracted to a greater degree, the 
greatest breadth was 58mm. The head is ‘14 mm. long, and 2 
mm. broad. As far as could be ascertained, there was a single 
tow of 10 hooks, ‘o2I mm. long, on the rostellum. The suckers 
were ‘og8 mm. in diameter. Neck ‘4 mm. long. The genital 
pores unilateral. The testes are three in number, and have a 
diameter of ‘06 mm. ‘Two were situated posteriorly, one on each 
side, and the third was lateral and somewhat anterior. The vari- 
able disposition of the testes noted by Fiihrmann (1906) was not 
seen in our specimens. The cirrus bulb measured ‘12 mm. long, 
and was situated anteriorly. The internal extremity abutted on 
the posterior edge of the preceding segment. It will be noted 
