84 
CRUSTACEA. 
The second and third pairs of claws are marked with alternate transverse belts of white and car- 
mine, the latter being sprinkled with minute white spots, the last joint white with red spots; small 
stiff' pink coloured hairs are scattered here and there over the claws ; the third pair has besides several 
packets of moderately long hairs of the same colour growing from the under parts of the last and 
penultimate joints, resembling a brush. 
The fourth and fifth claws have a roughened brown surface on the outer aspect of their terminal 
joints, which aids them in adhering to the pillar of the shell selected for their abode. The abdomen 
has four thin horny plates at its upper part, and as many short and slender ciliated appendages 
attached to the left side. 
Plate XXY. Fig. 2. Pagurus pictus. 
2 a. Pedipalpus externus, auctus. 
Genus CiENOBITA, Latr. 
14 . C/Enobita Olivieri. 
Can . magna, rubra, tuber culata , chela sinistra majore extrorsum muricata, immaculata. 
Long . corp. unc.5. 
Pagurus clypeatus. Oliv., Encycl. Meth. Ins. 8. p. 643. sp. 14. pi. 311. 
fig- !• 
After a careful comparison of the Pagurus clypeatus of Olivier with the description of the Cancer 
clypeatus of Herbst, I am of opinion they are distinct species. 
Herbst expressly says, “ Der Schild ist oben ganz t glatt ;" The shield is smooth above; “Die 
Hand ist auf der Oberflache glatt; auf der Mitte steht ein grosser liimmelblauer Fleck;" The hand 
(speaking of the left chela) is smooth above, and marked with a large azure spot in the middle. In 
neither of these respects does the Pagurus clypeatus of Olivier correspond with Herbst’ s species, having 
both the carapace and the upper part of the manus of the left chela muricated, and the latter without 
any spot. Moreover, Herbst’ s species is very small ; he had not seen any the length of whose cara- 
pace exceeded half an inch, and consequently he gave a magnified view of the species (taf. 8. fig. 2 b.); 
and that it is a small species is proved by one of Mr. Lay’s specimens, whose carapace is not quite an 
inch long, having ova attached to the ciliated appendages of the post-abdomen, and filling the Helix, 
its habitation, like the ova of Ocytboe in Argonauta Argo. In colour, also, which Herbst describes 
as a dirty white, clouded with brown or blue, the Pagurus clypeatus of Olivier is altogether at variance 
with the Cancer clypeatus of the German carcinologist: “ II est fort grand, et d’un rouge tres-clair,’’ 
says Olivier — an expression which would naturally flow from the contemplation of such a specimen 
as is before me; and although he adds, “ jaunatre ou brune,’’ yet the united testimonies of Mr. Lay 
and Mr. Stutchbury, who have had opportunities of observing great numbers of Olivier’s species in its 
native islands, are in favour of the bright red being the most prevalent colour. 
The thorax of this species has the appearance of a roughened tuberculate surface which has been 
subject to attrition; so that while the middle projecting part is smooth, or impressed with puncta, the 
sides have retained the tuberculate character. The truncated anterior margin of the thorax is canali- 
culate, with the angles produced forward. The eye-peduncles are compressed, and converge, flattened 
on their inner aspect, convex externally, to which aspect the visual organ is confined, as indeed, from 
the close approximation and form of the supporting peduncles, it would be useless on the opposite side. 
The small scale, which in the Paguri usually is situated on the dorsal aspect of the base of the peduncles, 
is here situated between them. Both parts are marked with small white granules. The lateral antenna 
are shorter than the chela; the mesial are almost as long as these; with their first joint conical, and 
bearing a flattened process at the upper part near the base; the superior of the terminal seta is double 
the length of the inferior. 
