JOURNAL OF MICROSCOPICAL SCIENCE. 
DESCRIPTION OF PLATE I, 
Illustrating Dr. Herapath’s paper on Photographs from the 
Anchors and Plates of various Synapte. 
Fie. 
1.—Whole animal, Synapla Duvernea, copied from Quatrefages, very 
like S. Sarniensis; but the latter has one pair of pinne extra on 
each tentacle. 
2.—Anchors and plates of S. Duvernea, from Quatrefages, showing the 
armed or spinous character of the anchor at its convex border, 
and the plate with six holes surrounding the central aperture, as 
in inherens ; but the thick plain borders distinguish it. 
3.—Plate, compounded of the various published figures of Synapta— 
Hogg, Carpenter, ‘ Micrographie Dictionary,’ Quatrefages. The 
whole animal is Hoge’s figure of Chirodota from Forbes, called 
Synapta by Hoge; the oral tentacles are imaginary developments 
of S. digituta. 
C, in this figure, is an anchor-plate of S. Sarniensis, for com- 
parison, 
4.—Anchors and plates of §. inherens, given by Professor Wyville 
Thompson in the ‘ Microscopical Quarterly Journal.’ (Compare 
with fig. 7.) 
5.—Photograph of anchors and plates of Synapta digitata, as prepared 
from a specimen sent by Professor Wyville Thompson, as obtained 
from Antrim. 
6.—Anchors and plates of Synapta vittatau; six holes surrounding the 
central aperture; well-formed arch at articulating extremity. 
(Suez.) 
7.—Anchors and plates of S. inherens, as prepared from a specimen 
forwarded to the author by Professor Thompson, of Belfast; six 
holes surrounding the central aperture; margin of plate smooth ; 
apertures crenated. 
8.—<Anchors and plates in situ skin of Synapta bi-deutata, obtained 
from China. Anchor-head bifid at each extremity ; plate, six holes 
around central aperture; apertures oval; margins smooth. 
9.—Anchors and plates of S. Sarniensis, seen by reflected light; the 
well-formed arch apparent ; the cup-shaped appearance of plate ; 
the reflected arms of the anchors; the seven holes around the 
central aperture ; rounded holes, crenated edges, and margin. 
10.—Photographs taken by the Rev. J. Whiting, of Clifton, also from 
S. Sarniensis ; some plates monstrous in this slide; seven holes are 
central in the normal, 
11.—Various plates and anchors from Synapta Sarniensis, by transparent 
light; seven holes around central aperture; margins crenated ; 
apertures roundish; margin of plate crenated ; arch dimly seen, 
C and d, two plates of S. inherens occurring by accident in the 
slide. The animal found in the same bed with S. Sarniensis. 
