1gI6. | B. L. BuatiA: Ciliate Protozoa of Lahore. 179 
presented, both in its form and in its ciliary arrangement, a close 
resemblance to the theoretical diagram in Bronn’s Thier-Reichs, 
fig. 17a. The single spherical contractile vacuole situated near 
the posterior pole was seen to be surrounded by 5 to 7 small feed- 
ing vacuoles at the commencement of its diastolic phase. These 
were seen to contract and there would remain 3 only, the central 
one considerably larger than the 2 subsidiary ones now left. This 
main contractile vacuole then contracted and disappeared, the 
others following almost simultaneously and contributing to the 
formation of the vacuole afresh, the neighbouring subsidiary ones 
soon making their appearance again (figs. I, Ia, Ib). 
Of the several existing species of Holophrya, it shows some 
resemblance to H. simplex in the absence of trichocysts and 
pharynx, but differs considerably from it in the size of the body 
and the form of the macronucleus, specimens of that;species being 
only about 35, in size and the macronucleus globular. The only 
other species possessing a band-like nucleus is H. coleps, Khrbg., 
in which, however, it is curved in a spiral and the subsidiary 
vacuoles arranged in an elongated row. So the form described 
belongs to a new species, for which the name H. indica is suggested. 
Genus Urotricha, Clap. u. L. 
Urotricha globosa, Schewiakoff. 
Forms belonging to this species were found in the same locality 
as H. indica in April, 1914, and resembled closely the description 
given in Eyferth (3, p. 392); body egg-shaped with an anterior 
terminal mouth, and a posterior springing bristle elongated in the 
direction of the long axis of the body. A few points of difference 
were however observed. The macronucleus, which is spherical, is 
proportionately larger in size than there figured (tafel xii, 2), the 
contractile vacuole is placed in the median line near the posterior 
end and not on one side, and there are cilia on the posterior part 
of the body in the neighbourhood of the springing bristle also. 
Genus Enchelys, Hill. 
Enchelys arcuata, Clap. u. L. 
Members of this species were found in an infusion of dry 
leaves in September, 1915, the dry leaves having been steeped ina 
dish of water about Io days previously. Body rounded posteriorly, 
attenuated anteriorly. Dength 80;, maximum width 30,. The 
animal is broadest at one-fourth of the length of the body from the 
posterior end, and begins to taper rapidly in the anterior fourth. 
Anterior end truncate, occupied by the mouth. Cilia covering the 
whole body, but very fine, rather longer ones at the oral end. 
Contractile vacuoles several, arranged in an arch along the margin 
of the body. 
