228 PENTACTJE. 



To this genus also belongs the following species of Dr. 

 Fleming (if, indeed, it be more than a variety of Cucumaria 

 pmtactes). 



" H. dissimilis. (Fleming, Brit. An. p. 483.) 



" Body pentangular, tapering to both extremities ; 

 suckers hard, conical ; tentacula of two kinds ; those which 

 are plumose are shorter than the five simple ones which 

 are opposed to them. 



" A single specimen of this probably new species, about 

 two inches in length, was found by Dr. Coldstream on 

 Leith shore." 



In the same valuable work is the following notice of a 

 species which seems to be distinct, but is very ambiguously 

 characterised. 



" H. Neillii. Tentacula ten, with ten subsidiary ones 

 surrounding the margin of the mouth. — Frith of Forth, 

 Mr. (now Dr.) Neill. 



" This species, in form and colouring, bears a near 

 resemblance to the preceding (Holo. Montagui), but it 

 differs in the exterior tentacula being more subdivided, 

 and in the number of the anterior ones. These last are 

 similar in form to the outer ones, though only one-fourth 

 of their size. This species was brought to Mr. Neill by a 

 Newhaven fisherman, 3d September 1818. Being in com- 

 pany with this intelligent observer of nature at the time, 

 he kindly presented it to me, and remarked that it was 

 different from the two species which Professor Jameson, 

 on his authority, had recorded (Wern. Mem. I. p. 558) 

 as natives of the Frith of Forth, circumstances which in- 

 dicated the propriety of its specific appellation. I have 

 since received a specimen from Cape Wrath through the 

 kindness of mv friend Dr. Coldstream. 1 '' 



