Microscopic a l E s s a y/s< 0 



377. Brachionus Urceolaris, 



Fig.^oand 57, Plate XXVI. and Fig. 36, 37, 38, Plate XXIII 



For a- full defcription of this fee page 448. 



378. Brachionus Bakeri. Fig, 58, Plate XX VL 



Brachionus capfularis, tefta ventricofa, apice quadridentata^, 

 bah; bicorni, cauda longa, bicufpi. Capfular brachionus, the 

 fhell ventricofe, four teeth at the apex, two horns at the bafe, 

 the tail long, and terminating in two. fhort points.. 



This differs confiderably from the foregoing in the fhape of the- 

 fhell, from each fide of which there is a curved projection in- 

 clining towards the tail, nearly of the fame length with it, and 

 terminating in a point. The upper part alfo of the fhell is of a 

 different form, having in general four longer fpiculse, and two 

 Ihorter ones. From the head two arms, or branches,, are fre- 

 quently extended ; the circular end of each is fu mimed* with a- 

 border of little hairs, which one while move in a vibratory man- 

 ner, at another time they have a rotatory motion. The eggs are 

 either affixed to the tail, or the curved part of the fhell ; they 

 have from one to five hanging from them. Mr. Muller has- fur- 

 ther difcovered two fmall feelers, and a kind of tongue to this 

 little creature, a the rotatory organ, b the tongue, c the feelers, 

 d a ciliated part on the fide of the fhelL 



379.. Bras. 



