REPORT ON THE CRINOIDEA. 221 
The mouth leads into a funnel-shaped gullet, the internal epithelial lining of which is 
raised into strong glandular ridges, as is the case all along the first part of the digestive 
tract. There is no stomachie dilatation, but the tubular lower portion of the cesophageal 
funnel is continued into a narrow intestine which forms one simple loop, and turns 
upwards again to end in the anal opening, as shown in the right hand portion of 
Pl. VI. fig. 5. The body-cavity is occupied by the usual loose network of connective 
tissue, with dark brown granules dispersed through it in abundance. It is not 
strengthened, however, by any of the calcareous rods and plates which are so often found 
in a similar position in other Crinoids. Careful search also reveals the presence of 
visceral blood-vessels interpenetrating its meshes ; but I have not been able to discover 
satisfactory evidence of any water-tubes depending from the oral ring into the body- 
cavity, although these organs must certainly be present, and are probably numerous, like 
the water-pores on the disk. The colour of the spirit-specimen is a light yellowish-white. 
Localities.—Station 106. August 25, 1873; lat. 1° 47’ N., long. 24° 26 ’W.; 1850 
fathoms; Globigerina ooze; bottom temperature, 36°°6 F. (1°°8 C.). Stem-fragments only 
(jide C: W. T.): 
Station 147. December 30, 1873; west of the Crozets; lat. 46° 16’S., long. 48° 27’ E.; 
1600 fathoms; Diatom ooze; bottom temperature, 34°°2 F. (0°°8 C.). “One or two 
complete specimens and several fragmentary portions” (fide C. W. T.). 
The stem-fragments from Station 106 seem to have been mislaid; as neither Mr. 
Murray nor I have been able to find them in the collection of Crinoids which was in 
Sir Wyville’s hands at the time of his death, and was subsequently sent on tome. But 
the characters of the stem are unmistakable, being utterly different from those of either 
Bathycrinus or Rhizocrinus ; and unless the fragments in question belonged to a new 
generic type altogether, which seems improbable, I see no reason for doubting Sir 
Wyville’s identification of them with the Hyocrinus which he dredged four months later 
at Station 147. The point is one of some interest as regards distribution, for Station 
106 is in the Mid Atlantic, just north of the Equator, while No. 147 is in the Southern 
Ocean, 30 miles to the westward of the Crozet group. 
The mention of ‘‘ one or two complete specimens ” said to have been obtained at this 
Station is unfortunately somewhat ambiguous. The original of figs. 1-4 on Pl. VI. 
seems to have been obtained in a fairly complete condition, lacking, however, the 
attached portion of the stem; but I am sorry to say that the stem and the head have 
since parted company. Another stem-fragment was sent me with portions of the thin 
basals still in connection with its upper end, and also two fragments of the disk, one with 
four of the oral plates (Pl. VL. fig. 5), and the other with the remaining plate (PI. Ve. 
fig. 6). These were mounted in balsam by the late Dr. von Willemoes Suhm, and doubtless 
belong to the stem-fragment just mentioned, but the greater part of the cup is wanting. 
Sir Wyville concluded his first account of Hyocrinus hy a reference to a specimen 
