CuviEiiiA. RADIATA. FISTULID^. 483 
11. H. MontaguiL — Tentacula eight, with two small conti- 
guous subsidiary ones. Mouth simple. 
H. pen. var. Mont. Lin. Trans, ix. p. 112. tab. vii. f. 4. — Milton Sands, 
Montagu ; Frith of Forth, Mr Neill. 
The body is cjlindric, white, covered with a mottled cuticle ; towards the 
head the whole becomes purplish-browii ; margin of the mouth white ; while 
alive, the two small subsidiary tentacula are alternately in motion, covering 
the mouth ; vent'pentangular, red. — The subdivisions of the tentacula are not 
so numerous as in the preceding species. 
12. H. Neillii. — Tentacula ten, with ten subsidiary ones sur- 
rounding the margin of the mouth. 
Frith of Forth, Mr Neill. 
This species, in form and colouring, bears a near resemblance to the pre- 
ceding, but it dilfers in the exterior tentacula being more subdivided, and in 
the number of the interior ones. These last are similar in form to the outer 
ones, though only about one-foiirth of their size. This species was brought 
to Mr Neill by a Newhaven fisherman, 3d September 1818. Being in 
company 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 indicate the 
propriety of its specific appellation. I have since received a specimen from 
Cape Wrath, through the kindness of my friend Dr Coldstream. 
13. H. dissimilis. — Body pentangular, tapering to both ex- 
tremities, 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. 
14. 'H.. pellucida. — Ten branched tentacula, translucent, with 
numerous white papillae. 
Mull. Zool. Dan. t. cxxxv. f. 1. — In the Zetland seas, rare. 
Length about six inches, diameter scarcely one inch ; whitish ; five lon- 
gitudinal muscular bands. The milky colour and delicate translucency of 
this species readily serve as distinguishing marks. 
Gen. vii. CUVIERIA (Feron).^Body thickest in the mid- 
dle, ascending, and attenuating towards the extremities. 
15. C. phantapus» — Anteally obtuse, -cylindrical ; retrally 
acuminato-conical. 
Holothuria phantapus, Linn. Syst. 1089. No. 2. Zool. Dan. tab. cxii. 
f. 1, 2, 3. — Ascidia rustica, Penn. Br. Zool. iv. p. 48. tab. xxiii. f. 35. 
—Occasionally found from Devon to Zetland. 
The body is usually from 6 to 8 inches in length, of a dark brown, rough, 
with transverse wrinkles ; the head is a rich carmine, with ten cylindrical 
tentacula divided at the ends ; the vent is surrounded by simple tentacula ; 
the disk has two longitudinal marginal rows of suckers, and three in the 
middle. 
H h 2 
