Mollusks. 4433 



form which, with one exception, has characterized the specimens 

 found in this locality : there is no animal of its tribe that will more 

 amply reward the search of the curious, by the unexpected and 

 marvellous beauty of the gem-like spots on its body, when these are 

 brought to view under a Codington lens. 



Polycera quadrilineata, [P. flava, Flem.) At Burghead ; rather 

 rare. Of the few specimens of this attractive creature found here one 

 proved to be the very beautiful black and orange-scarlet banded va- 

 riety. It was a full-sized specimen, and was found among sea-weeds 

 in a rock pool towards high-water mark. The branchial lobes, even 

 when the animal was newly captured and apparently in vigorous 

 health, were found blunt at the point and inflated, so that other 

 causes besides " a sickly state " (Mon. Nudib. Moll.) would seem to 

 have the effect of inducing this circumstance. 



Polycera ocellaia. One individual found at Burghead, between 

 tide-marks, in July, 1853. 



Polycera Lessonii. A single individual recognized by Mr. Hancock 

 as belonging to this species, was met with in March last, at half-tide 

 level, among the rocks at Burghead. 



Ancula cristata. Apparently rare at Burghead, a few individuals 

 only having been found between tide-marks. 



Tritonia Hombergii. Two specimens were taken by the Rev. G. 

 Gordon from the stomach of a cod caught in the Frith, some years 

 ago. 



Tritonia plebeia. A single specimen was found at Burghead, un- 

 der a large stone, at low water of a spring tide. 



Dendronotus arborescens [Tritonia arborescens, Flem. and Mac.) 

 Rather rare at Burghead, where it has occasionally been found in its 

 fully developed state between tide-marks. When this beautiful ani- 

 mal is seen gracefully reposing among the branches of a sea-weed or 

 coralline, no great stretch of fancy is required to imagine it a stately 

 fallow-deer with more than royal antlers couching amid a thicket of 

 ferns. A miniature Dr. Syntax, paying a visit to the laminarian zone 

 and encountering such a tableau in his travels, would certainly be ar- 

 rested by it as a charming example of the picturesque. 



Doto coronata [Tritonia pinnatijida, Flem.) Burghead ; common 

 among corallines on stones at low-water mark. In all its varieties this 

 little animal is exquisitely beautiful. 



Eolis papillosa, (E. papillosa and Lesliana, Mac.) Not uncommon 

 under stones between tide-marks at Burghead. 



Eolis coronata. Very common at Burghead between tide-marks. 



