Miscellanea Zoologica. 537 



Planaria bioculata, Johnston, in Zool. Journ. iv. 56. 



Hab. Between tide-marks. Berwick Bay. 



Of a dusky olive colour, often tinted with purple in front, and 

 paler at the posterior extremity, which is more acuminated than is 

 common in the genus : body linear and narrow, from three to six in- 

 ches long, a line or so in breadth ; smooth and compressed : an- 

 terior extremity rounded, obscurely marked with a red spot over the 

 site of the heart. In the Zoological Journal, I have described this 

 species as having only two eyes, but as this appears to be a mistake, 

 or at least not constant in the species, it has become necessary to al- 

 ter its designation. 



When pressing a portion of the body between the plates of glass, 

 I have occasionally seen some bodies escape, of a curved fusiform 

 shape, acute at both ends, and marked towards one of them with a 

 pale circular spot. Plate XVIII. Fig. 1. They have shown no signs of 

 life, nor can I say what they are, though it has occurred to me, that 

 they may be embryo-young ; and that the worms may in fact be 

 ovo-viviparous. 



7. N. octoculata, of a uniform light reddish-brown colour ; eyes 

 6 or 8, placed in opposite pairs on the sides of the head. Plate 

 XVIII. Fig. 2. 



Planaria octoculata, Johnston, in Zool. Journ. iv. 56. 



Hab. Under stones, between tide-marks. Berwick Bay. 



Body linear, narrowed posteriorly, 3 inches long, and about ^th of 

 an inch broad, compresed, of a light reddish-brown colour, with a 

 darker spot in front over the hearts : eyes 6 or 8, and in some spe- 

 cimens I have seen 7> three on one side, and four on the other. It 

 appears therefore, that the number of the eyes, on which Muller and 

 others have reckoned confidently as a good and invariable character, 

 is not to be implicitly relied on. 



8. N. purpurea, of a uniform purplish-red colour, paler under- 

 neath ; eyes 6-8. (Plate XVIII. Fig. 3.) 



Hab. The sea shore under stones. Berwick Bay. 



Worm 2 or 3 inches long, smooth and glutinous. From the 

 darkness of its colour, the spot indicating the position of the heart 

 is scarcely visible until the body has been compressed. The num- 

 ber of eyes is the same as the preceding, and liable to the same var 

 riety. In this species the ova were distinctly seen to be contained 

 within the ccecal vesicles, which, when compressed, assumed a py~ 

 riform shape, having the slender end toward the intestines. 



