igoy.] Records of the Indian Museum. 245 



trated in text-fig. 2 ; the terminal expansion in this particular 

 case probably denotes that the animal has recently divided. The 

 expansions are quite similar to those I have already described in 

 C punjabensis ; they are more marked on the posterior side of the 

 actual line of constriction, where they appear to develop into the 

 nerve-commissures of the posterior animal (c/. some examples in 

 figs. 5 and 6). 



Sense organs. — A few fine hairs are seen at the anterior end of 

 the body. The granular matter in the cerebral ganglion doubtless 

 corresponds to the refractile particle in the same situation in 

 C. punjabensis. 



Reproductive organs. — I found these organs only in one specimen 

 (which was also dividing asexually), although within a few days 

 of this I looked through a fair number of examples with a view 

 to discovering others. 



The male organs {of. fig. 9) are situated opposite the middle 

 region of the crop ; a small spherical mass, in which no structure 

 could be discerned, and seen only on one side, perhaps represents 

 the testis ; to its outer side lies a tube, straight or doubly bent, 

 ending internally in a dilated portion, and externally on the surface 

 at the level of the setse of the sixth segment. A swollen part of 

 this tube near its external aperture is occupied by an ovoid some- 

 what granular mass, and the external aperture itself is funnel- 

 shaped. I could not distinctly see an internal opening at the 

 other end of the tube, nor was ciliary motion anywhere visible. 

 The genital setae have already been described ; there is a develop- 

 ment of hairs around the aperture ; and the skin is thickened here, 

 so that seen laterally (fig. 10) there is a slight protuberance. 



Scattered throughout the body, in the posterior as well as 

 in the anterior of the two as yet undivided animals, were numer- 

 ous sperm-morulse ; various stages in the development of these 

 are represented in fig. 8, beginning with a small globular hyaline 

 mass, in which the individual ceUs are but faintly visible with the 

 high power of the microscope, and ending with a wisp of enveloped 

 spermatozoa. The male products would therefore seem to ripen 

 while floating free in the body-cavity. 



The ovaries, of which one is shown in fig. 9, develop on the 

 anterior face of septum f ; one ovum, in the figure referred to, 

 is seen to be much larger than the rest ; it had a clear refractile 

 germinal vesicle which was enclosed by a zone of protoplasm some- 

 what clearer than that composing the mass of the egg. The recep- 

 tacula seminis (as I take them to be) are two sacs, attached near 

 their fundus to the septum at the anterior end of the crop (septum 

 f ), and opening exteriorly as shown in fig. 9 : they were of a 

 hyaline appearance, and no distinct structure could be observed. 

 No oviducts were seen. No cliteUum was distinguishable. 



The specimen whose reproductive organs are here described 

 was examined on April 24th ; the water concaining it had then bjen 

 kept in a vessel in the laboratory for a few weeks. 



