4434 Mollmks. 



On account of its remarkable voracity and addiction to slaughter, this 

 species may be termed the tiger of its tribe, — an appellation, however, 

 which will scarcely suggest its surpassing beauty. 



Eolis nifibranchialis. Rocks at Burghead, about low-water mark 

 of spring tides ; not rare. 



Eolis alba. Two specimens have been found at Burghead by Mr. 

 Macdonald ; one in July, 1853, and the other in the same month of 

 the present year; the former near high-water mark, and the latter 

 about low-water mark. 



Eolis Landsburgii. An individual of this rare species was found in 

 June, 1853, on a stone between tide-marks at Burghead. Mr. Han- 

 cock, to whom the animal was sent, thus writes regarding it : — " This 

 is undoubtedly E. Landsburgii, and, though not quite full grown, is 

 much better developed than the individual from which the figures in 

 the Monograph were made." These figures are, however, very accu- 

 rate and characteristic of the species. 



Eolis smaragdina. At Burghead between tide-marks ; rare. 



Eolis angulata. In 18 — Mr. Macdonald found an individual of 

 this species on a shell sent from Buckie, where it had doubtless been 

 brought up from deep water. 



Eolis nana. An individual of this species was found at Burghead, 

 near high-water mark, May, 1853. In confinement it manifested all 

 the activity and restlessness ascribed to it by the authors of the Mono- 

 graph. 



Eolis olivacea. At Burghead between tide-marks ; not rare. 



Eolis viridis. Not uncommon at Burghead about low-water mark. 



Eolis picta. At Burghead between tide-marks ; rare. 



Eolis tricolor. Frequent at Burghead about the upper margin of 

 the laminarian zone. Its habit, originally noted by Professor E. 

 Forbes, of rolling itself up into a ball when teased, is certainly a de- 

 cided feature of the animal. 



Eolis Farrani. Rather common in the same situation as the pre- 

 ceding, at Burghead, where it has made its first appearance on the 

 stage of British science in quite a new style of character, namely, with 

 a development — in regard principally to colouring, but also in some 

 degree to size — so superior to that represented in the Monograph as 

 to give it, to the uniniated eye, the appearance of a distinct species. 

 As such, in fact, it was regarded here, till the illusion was dispelled 

 by Mr. Hancock in lately receiving some specimens. Its newly- 

 discovered features being about, we understand, to receive publicity 

 in the concluding portion of the Monograph, any attempt at 



