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 va- 

 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. 



