402 
NATURE 
[Sepz. 18, 1873 
Lophogaster, with the exception of the second maxille. 
- These, with nearly the same form as in the Norwegian 
genus, bear a pair of accessory eyes, Such eyes are well 
known at the base of the thoracic and even of the ab- 
dominal limbs in the Euphansidz, a family with which 
the Lophogastridze have otherwise nothing in common, 
but hitherto they have not been met with in any other 
animal or in any of the manducatory organs. 
Of the eight pairs of legs seven are ambulatory, only 
the first pair is, as in Lophogaster, transformed into 
maxillipeds. The gills are arborescent and attached to 
the bases of the legs, The abdomen and its appendages 
scarcely differ from those of Lophogaster. We find here 
also that the last segment is apparently divided into two. 
This would indicate an approach to such forms as WVebalia, 
which has nine abdominal segments, or at all events a 
tendency to a multiplication of segments which if really 
existing would scarcely allow the association of the genus 
with the true Schizopods. 
The weather was remarkably fine. During the day the 
island of Flores was visible like a cloud on the horizon, 
about 50 miles to the northward. In the afternoon we ob- 
tained a series of temperature soundings at intervals of 
100 fathoms down to 1,000, and in the evening proceeded 
under steam towards Fayal. 
On the following day, the 1st of July, we sounded in 
1,350 fathoms, about 20 miles west of Fayal, apparently 
in a depression which separates the western group of the 
Acores, Flores and Corvo from the central group Fayal, 
Pico, San Jorge, Terceira, and Gracioza, and during the 
afternoon we gradually approached the fine island of 
Fayal, and enjoyed the development of its bold outlines 
and rich and varied colouring, In the evening we passed 
into the narrow channel between Fayal and Pico, and 
anchored in the roadsteads of Hortes. We found to our 
great disappointment that small-pox was prevalent in 
Fayal, and as Captain Nares considered it imprudent to 
give general leave, one or two of us only landed to pick 
up what general impression we might of the appearance 
of the place, and on the following morning we proceeded 
towards San Miguel, first taking a few hauls of the 
dredge in shallow water between Fayal and Pico, where we 
found a rather scanty fauna, resembling in character that 
of southern Europe, on a bottom of dark volcanic sand. 
On Friday, July 4, we sounded in 750 fathoms on a 
rocky bottom. The ship water-bottle was sent down and 
brought up a sample of the bottom water. In the after- 
noon we shortened and furled sails, and proceeded under 
steam towards San Miguel, and in the evening stopped 
abreast of Ponta Delgada, the capital of the island, 
where we lay-to for the night, secured to a buoy. Next 
morning, as we found, greatly to our satisfaction, that the 
town was considered free from any epidemic of small- 
pox, we steamed in to the anchorage, and cast anchor in 
13 fathoms. 
We remained at San Miguel until Wednesday the oth. 
We were well aware that the time at our disposal was 
quite insufficient to enable us to do anything of 
importance to add to the knowledge of the natural 
history of the island already so well worked out, 
and as we had had a long sea-cruise, we were in 
no way disinclined for a few days of complete relaxation. 
We accordingly combined into a large party, totally un- 
scientific in its object, and by the aid of mules and donkeys 
made a most enjoyable raid among the caldeiras and 
volcanic ranges of the east end of the island. The 
random impressions collected during these hore subsecive 
may perhaps be chronicied elsewhere. 
Our first haul after leaving Ponta Delgada, was in 1,000 
fathoms, mid-way between the islands of San Miguel and 
Santa Maria, and about fifteen miles north-west of the 
Formigas. The bottom was Globigerina ooze. The 
principal feature in this dredging was the unusual abun- 
dance of stony corais of the deep-sea group. 
ae 
Two living specimens of a large species of Flabellum 
were sifted out, the same as the one which we had 
dredged previously at station 73, to the west of Fayal. 
The corallum is wedge-shaped, the calicle rising from 
an attenuated pedicle. The extreme height, from the 
end of the pedicle to the margin of the cup, is 50 mm. ; 
the greatest diameter of this calicle is 65 mm., and the 
smallest 30mm. The three species are very nearly of the 
same dimensions. 
The lateral costae make an angle with one another of 
120° to 140°, and are sharp and moderately prominent, 
with an irregular edge. The external surface of the 
calicle is covered with a glistering epitheca, and near 
the margin is of a light pink colour. The costz of the 
faces corresponding tothe primary and secondary septa 
are almost as well marked as the lateral coste, and 
appear as irregularly dental ridges, separated by slight 
depressions. Theends of the calicle are broadly rounded, 
and it is compressed laterally in the centre. The upper 
margin is curved, describing about one-third of a circle. 
There are six systems of septa disposed in five cycles, 
The septa are extremely thin and fragile. They are 
tinged with pink, and covered with rounded granules, 
disposed in rows, The primary septa are approximately 
equal to the secondary, giving somewhat the appearance 
of twelve systems. These septa are broad and promi- 
nent, with a rounded superior margin, and curved 
lines of growth, The septa of the third, fourth, 
and fifth cycles successively, diminish in breadth, and 
are thus very markedly distinguished from one another, 
and from the primary and secondary septa. The septa 
of the fourth cycle join those of the third a short 
distance before reaching the columella. The septa of 
the fifth cycles are incomplete. The margin of the 
calicle is very deeply indented, the costal corresponding 
to the primary and secondary septa being prolonged in 
conjunction with the outer margins of these septa, into 
prominent pointed processes ; similar but shorter prolon- 
gations accompany the tertiary, and some of the quater- 
nary septa. Between each of the sharp projections thus 
formed, the edge of the wall of the calicle presents a 
curved indentation. 
Two of the specimens procured, expanded their soft 
parts when placed in sea-water. The inner margin of the 
disc round the elongated oral aperture, presents a regular 
series of dentations, corresponding with the septa, and is 
of a dark madder colour ; the remainder of the disc is 
pale pink. The tentacles take origin directly from the 
septa. They are elongated and conical. Those of the 
primary and secondary septa are equal in dimensions, 
and along with the tertiary tentacles, which are some- 
what shorter, but in the same line, are placed nearest the 
mouth, and at an equal distance from it. The tentacles 
of the fourth and fifth cycles are successively smaller and 
at successively greater distances from the mouth, 
Placed on either side of each tentacle of the fifth 
cycle, and again somewhat nearer the edge of the calicle, 
there are a pair of very small tentacles which have no ~ 
septa developed in correspondence with them. There 
are thus four successive rows of tentacles, and the 
normal number is ninety-six. The tentacles are of a 
light red colour, and between their bases are stripes of 
yellowish red and light grey. 
This group belongs to the group Pladella sub-pedicellata 
of Milne-Edwards, and probably to that division in which 
the costze are prominent and ridge like on the faces of 
the corallum, as well as on its lateral margins, but it 
differs from those described under this head by Milne- 
Edwards, in that it has five cycles, the fifth being incom- 
plete, and in other particulars which appear from the 
description given. 
Asingle living specimen of a coralreferred,by Mr. Moseley 
to the genus Ceratotrochus was obtained from this haul. 
The corallum is white, The base sub-pedicellate with a 
