PARASITES. 263 



skilful artist. The anterior part of the animal moved from side to side. 

 It survived several days. 



Plate LXVII. 



Fig. 6. Boiryllofer. 



§ 5. Pegasillus hirsutus. — Plate LXII. fig. 18. 



This subject I consider pretty much in the same predicament as the 

 preceding. Originally I thought it a Crustacean parasite, but it did not 

 maintain that character to sufficient conviction. 



A week after a quantity of miscellaneous matter had been collected 

 from the sea, in the end of February, a vast legion of Monoculi rose to- 

 wards the surface of the water. Many of the subjects of the present 

 paragraph were interspei'sed among them. 



These were absolutely microscopic objects ; length not exceeding 

 the sixth of a line, the body tapering slightly downwards ; a pencil of 

 bristles hung from each shoulder, at least once and a hah' as long as the 

 body. Four black specks in a line, slightly curved, appeared across the 

 forehead. 



Colour of the whole animal white. 



This creature has a quick, active, searching, motion, frequently 

 bristling itself up. 



I could not refer it to any established genus, nor can I affirm it to 

 be a perfect animal, or in progress to metamorphosis. 



Plate LXII. 



Fig. 18. Pegasillus hirsutus, enlarged. 



