ECHINOI^EtlMAtA. 
751 
ECHINODERMATA 
BY 
E. Perceval Wright, M.A., M.D., E.L.S. 
Bolsciie, W. Zusaramenstellung der bis jetzt bekannten Echi- 
nidcn aus der Gruppe Diademiden. Arch., fiir Naturg. 
xxxi. 1865, pp. 324-336, taf. xiii. 
Carpenter, W. B. Researches on the Structure, Physiology, 
and Development of Antedon [Comatulay Lamk.) rosaceus. 
Abstract in Proc. Roy. Soc. vol. xiv. no. 77 (read June 15, 
1865) p. 376 ; Ann. & Mag. Nat. Hist. 1865, Sept. p. 200. 
The author proposes to give a most complete account of the 
minute structure, living actions, and developmental history of 
this Crinoid, tracing its development from the point to which it 
had been brought in the elaborate memoir of Prof. Wyville 
Thomson. In the present memoir the calcareous skeleton only 
is described. 
Duncan, P. M. On some fossil Echinoderms from the South- 
Australian Tertiaries. Ann. & Mag. Nat. Hist. September 
1864, pp. 165, pi. vi. fig. 3. 
A new species of HemipataguSj H. forbestij is described. It 
had been figured in Rev. J. Wood’s ' South Australia,’ but not 
described. It is found very commonly in the South Austra- 
lian Tertiaries, along with Clypeaster folium , Agass. 
Herapath, W. B. On the genus SynaptUj with some new Bri- 
tish species. Quart. Journ. Micr. Science, 1865, pp. 1-7, 
with plate 1 (original communication) ; also abstract in 
Report Brit. Assoc. Bath, 1864, Trans, p. 97. 
The author seems inclined to think that full reliance can be 
placed on the calcareous bodies met with among the Synaptidse 
for specific characters. The last paragraph but one in this paper 
is so very indefinite and full of mistakes that we quote the fol- 
lowing from an abstract of the same paper in the British Asso- 
ciation Report. In Synopta tlie perforated plates are the ana- 
logues of the pentagonal plates of theEc^mw^-corona. The anchors 
are merely modifications of the spines, and are used as organs 
of prehension or locomotion ; they assist the animal in raising 
its vermiform body to the mouth of its tube, and are withdrawn 
during the period of contraction ; they contribute little or nothing 
to the defence of the animal.” 
