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malleo-ramate, and the rest of the digestive system follows the usual 
type. The ventral antennae , consisting of two small setigerous 
pimples, are well defined. No eyes were detected. Touching the 
rectum, but evidently not connected with it, is an organ, bulbous in 
shape, from which a duct passes down to the foot. Its function must 
be for the present problematical. The foot also contains three 
glandular bodies, presumably for the secretion of the mucus compos- 
ing the tube which surrounds it. In one or two specimens the whole 
body-cavity was filled with an enormous number of oval hyaline 
vesicles in chains, probably of a parasitic nature.* 
Length 1 /25 in. Habitat : attached to water-plants in a pond in 
the Botanical Gardens, Singapore, April 1892, in company with 
Stejphanoceros Eichornii , Melicerta ringens, &c. ; also in the Wu- 
shan Creek, Yangstze-kiang river, China, August 1892. 
Lacinularia racemovata. PI. III. fig. 7. 
The colonies consist of free-swimming clusters of a most unusual 
shape. Each cluster, consisting of about 150 individuals, is a pro- 
late spheroid, revolving on its long axis, which is nearly twice the 
length of the shorter axis (fig. 7 d). The individual rotifers inhabit 
coherent gelatinous tubes, and are united along the long axis of the 
cluster. The corona is broad, the shorter diameter being placed 
dorso-ventrally, with a shallow ventral sinus, and with the gap in the 
ciliary wreath very wide. The troplii are of the malleo-ramate type, 
but somewhat peculiar in structure (fig. 7 e), the unci four-toothed, 
the rami three-sided, with their striae evanescent. Two minute red 
eyes, with clear transparent lenses, are situated in the corona, below 
the secondary wreath. The two ventral antennae, one on each 
shoulder below the corona, are obvious. The dorsal antennae are 
probably represented by a ciliated pit on each side of the corona, from 
which spring cilia longer and thicker than those in the ciliary 
wreath. 
Size: length of cluster 1/10 in.; breadth 1/17 in.; length of 
detached individual 1/57 in. Habitat: a pond at Ye-ki-shan near 
Wuhu, August 1892. 
Megalotrocha procera. PI. III. fig. 5. 
This species was found in August 1892, attached to water-plants 
in a lotus pond at Wu-shan, Yangstze-kiang river. The clusters 
are very large and conspicuous to the naked eye, looking like flakes 
of wool against the green leaves. The species is chiefly characterized 
by the enormous length of the foot, which is three-fourths the length 
of the whole animal. No gelatinous tubes are present. Like M. 
alboflavicans, four opaque warts stretch from shoulder to shoulder 
* Perhaps these were the Trypanococcus Rotiferorum of Prof, von Stein. See 
‘ The Rotifera,’ i. p. 10 i. 
