13 Echin. 
Titles. 
1000 
Mortensen, Th. Report on the 
Echinoderms collected by the Danmark- 
Expedition at North-East Greenland. 
ICobenhavn Danmark - Ekspeditionen 
til Grnnlands Nordostkyst 1906-1908 
5 Nr. 4. Reprint of ‘ Medd. Gronl. 45 
1910 (237-302) 10 pis. [15, 5 ; 19, 3 ; 
27, A, v; 31, 13, C, D, E, F.] 181 
Mortensen, Th. Echinological notes* 
III. The central (suranal) plate of 
the Echinoidea. IV. On natural 
hybrids of Echinoderms. Kjobenhavn 
Nath. Medd. 63 (27-06). [07, 5; 
15,4,0; 31, C.] 182 
Mortensen, Th. Astroclon suensoni 
n. sp. A new East Asiatic Euryalid. 
Preliminary notice. Kjobenhavn Nath. 
Medd. 63 1911 (209-212). [27, A, iv ; 
31, E.] 183 
Mortensen, Th. A new species of 
Entoprocta, Loxosomella anledonis from 
north-east Greenland. Kjobenhavn 
Medd. Gronl. 45 1911 (399-406) pi. xxvi. 
[19, 8.] 184 
Nelli, B. II Pliocene dell’ isola di 
Citera. Roma Rend. Ace. Lincei 20 
Som. 2 (563-568). [27, B, ii, c ; 31, C.] 
185 
Oshima, Hiroshi. Kinko no setsu. 
[On Gucumaria Japonica Semp.] Do- 
buts. Z. Tokyo 23 1911 (182-188). 
[07, 1 ; 31, B.] 186 
Oshima, H. Note on a gigantic 
form of Auricularia allied to A. nudi- 
branchiata Chun. Annot. Zool. Jap. 
Tokyo 7 1911 (347-352). [15, 5 ; 19, 8 ; 
27, A, iv; 31, B.] 187 
Pearse, A. S. Autotomy in holo- 
thurians. Biol. Bull. Woods Hole 
Mass. 18 1909 (42-49) figs. 1 & 2 tab. i. 
[11,7.] 188 
Peter, Karl. Nouo oxporimontello 
Untersuchungen liber die Grosse der 
Variability und ihre biologische Be- 
deutung. Arch. EntwMech. Leipzig 
31 1911 (680-804). [23, 7.] 189 
Pinney, Edith. A study of the 
chromosomes of Hipponoe esculenta and 
Moira atropos. Biol. Bull. Woods 
Hole Mass. 21 1911 (168-186). [15, 4 ; 
31,0.] 190 
Po!ta, Filip. Rukovet’ Palaeozoo- 
logie. I . cast’ : Invertebrata. 8vo. 
(1-310) Praze 1904. [03,2.] 191 
Quijada, Bernardino. Catalogo de 
los Equinodermos vivientes conservados 
en el Museo Nacional. Santiago de 
Chile Bol. Mus. Nac. 3 (152-164). 
[03, 5.] 192 
Reeds, Chester A. The Hunton 
formation of Oklahoma. Amer. J. 
Sci. New Haven Conn. (4) 32 1911 
(256-268). [27, B, iv, g.] 193 
Retzius, Gustaf. Ueber den Bau 
des Eies der Echinodermen im un- 
befruchteten und befruchteten Zustand. 
{In: Retzius, Biolog. Untersuchungen. 
N.F., xv.] Jena (G. Fischer) 1910 
(1-54) 13 Taf. [15,3.] 194 
Retzius, G. Zur Kenntnis der 
Spermien der Echinodermen. [In : 
Retzius, Biolog. Untersuchungen. N.F., 
xv.] Jena (G. Fischer) 1910 (55-62) 
2 Taf. [15, 3.] 194a 
Richardson, Linsdall. On the 
Sections of Forest Marble and Great 
Oolite on the railway between Ciren- 
cester and Chedworth, Gloucestershire. 
London Proc. Geol. Ass. 22 (95-115) 
pis. xv- xix. [27, B, iii, c, 3 ; 31, C.] 
195 
Richardson, L. The Rhaetic and 
contiguous . deposits of West, Mid and 
part of East Somerset. London Q. J. 
Geol. Soc. 67 (1-74) pis. i-iv. [27, B, 
iii, d ; 31, C.] 196 
Romanes, James. Note on Strong y- 
locenlrotus lividus as a rock borer. 
Cambridge Proc. Phil. Soc. 16 (121) 
pi. ii. [19, 2.] 197 
Runnstrom, J. Untersuchungen 
fiber die Permeabilitat der Seeigeleies 
ffir Farbstoffe. T. 1. Ark. Zool. 
Stockholm 7 No. 13 1911 (17). [15, 8.] 
198 
Salfeld, H. Versteinerungen aus 
dem Devon von Bolivien, dem Jura 
und der Kreide von Peru. Leipzig 
Wiss. Ver. Erdk. 7 (207-220) pis. i-iv. 
[27, B, iii, b, 1 ; 31, C.] 199 
Sartory et Clerc. Note sur une levure 
trouvee dans le contenu intestinal de 
rholothurie. Paris C. R. ass. fran?. 
avanc. sci. 38 (Lille) 1909 [1910] 
(1014-1015). [11,4.] 200 
Shackell, L. F. Phosphorus meta- 
bolism during early cleavage of the 
echinoderm egg. Science New York 
(n. ser.) 34 1911 (573-576). [15, 8.] 
201 
Shackell, L. F. vide Lyon, E. P. 
