Dr. F. Muller on Philomedusa Vogtii. 433 



an opake pale-yellow ring; less constantly there are similar 

 spots on the outside at the base, and brownish spots between 

 these. 



The entire surface of the body bears a short-ciliary coat ; and 

 elongated-narrow thread-capsules, of 0*012 to 0*016 millim. in 

 length, occur everywhere, but are especially numerous on the 

 tentacles. 



The form of the mouth is very variable. When the tentacles 

 are bent obliquely backwards, it usually appears as a wide open 

 funnel, surrounded by eleven pads separated by sharp furrows, 

 preceding the same number of tentacles. One of the shorter 

 tentacles thus remains without a representative pad ; whilst the 

 two neighbouring corresponding pads are distinguished by their 

 breadth, as indeed the longer tentacles in general are represented 

 by broader and the shorter ones by narrower pads. The mouth 

 rarely appears nearly round, but is usually elongated in the 

 direction of the diameter passing through the tentacle which is 

 destitute of a basal pad. Corresponding to this tentacle, there 

 remains between the two adjacent pads a tolerably deep channel, 

 at the outer extremity of which each of these pads is drawn out 

 into a small tongue-like process. A third similar process lies be- 

 tween these two, opposite to the padless tentacle. These three 

 processes, which are usually white and opake, strike the eye 

 particularly when, the tentacles being directed obliquely for- 

 wards, the mouth is nearly closed : the pads, which are nothing 

 but peculiar inflations of the cavity of the body, are then a good 

 deal flattened, and the tongue-like processes, being extended 

 straight out, rise above their level. 



The buccal pads, the furrows separating them, and the chan- 

 nel commencing at the tongue-like processes are continued into 

 the short stomach, which attains about twice the length of the 

 tentacles, and is the immediate continuation of the funnel of the 

 mouth. The margins of the channel appear to be capable of 

 laying themselves together to form a complete tube in the whole 

 length of the stomach. At the bottom the stomach is in com- 

 munication, by a wide orifice, with the body-cavity, into which 

 one may not unfrequently look down from the mouth. When it 

 closes by bringing its walls together, it appears flat — narrow 

 when seen in the direction of the diameter passing through the 

 channel, broad when seen in a direction perpendicular to this. 

 In the latter lateral view it is seen to project into the cavity of the 

 body further on the side of the channel than on the opposite side. 



The wide body-cavity is clothed throughout with cilia. Around 

 the stomach it is divided by muscular walls into twelve cham- 

 bers, which correspond with the tentacles, and are continued 

 into their cavities. The partitions do not reach quite to the 



