7-i Proceedings of the Royal Society of Victoria. 



small, not to be seen when the creature is fully expanded, 

 nor when fully I'etracted, but when partially expanded it 

 may often be easily observed. It appears clearly in some of 

 our mounted specimens. The ventral antennse are peculiar 

 in their position. They are papillae, situated some distance 

 below the neck on the body of the animalcule. When it is 

 fully retracted, they are situated at its anterior extremity, and 

 they too may be clearly seen in the mounted specimens. At 

 their bases are two large pear-shaped masses ot nerve matter 

 (ganglia?) connected with the nerve cord. As L. socicdis 

 has been most carefully examined by Huxley and others, it 

 is impossible that tlie antennae should have been overlooked 

 had they been present in that form, and had they held the same 

 relation to the nervous system that they do in the one we are 

 describing. In the mounted specimens we noticed, too, that 

 the corona appears beautifully i-eticulated on its under 

 surface, and we subsequently observed it in living speci- 

 mens. We found this species in large numbers at Brighton 

 Beach. 



Sp. cJt. Corona broadly heart-shaped ; dorsal gap com- 

 paratively large ; dorsal antenna minute ; ventral antenna? 

 papilla3, situated half-way down the body, and wide apart, 

 connected with pear-shaped nerve masses. Length aVfl^ ii"!- 



(xxi) Liinnias gramdosus (?). In water taken from the 

 Botanical Gardens on November 8, we found a species which 

 may be this. The tube was yellow, strewed with roundish 

 brown granules, and transversely striated on the inside. But 

 though there were numerous old tubes, there wei-e only two 

 with occupants. In these we observed that the two lobes were 

 not nearly so greath^ divided ventrally as in L. cerato'phylli, 

 and the ventral antennae were souiewhat more ]:)rominent. 

 We were unable to see any horny pi-ocesses, and the foot 

 was certainly not forked, as that oi' L. gramdosus is said to 

 be. Hudson and Gosse, however, seem to doubt the forking 

 of the foot, and the description seems generalh' doubtful. It 

 will be worth while looking for this species somewhat earlier 

 next year, and examining it carefully. 



(xxii) (Ecistes intermedins. We have seen two varie- 

 ties of this Q^cistes — one which we take to be the form 

 mentioned by Hudson and Gosse, tlie other probably new. 

 The oue has the ordinary brown tube of L. ceratopkyUi, with 

 moderately long antennae; the other has a white tube, which 



