8 Moll. 
VIII. Mollusca, 
[1906] 
Cockerell, T. D. A. 2. A fossil form 
of Oreohelix yavapai, Pilsbry. Nautilus, 
Boston, Mass., 19, 1905, (46-47). 
Cockerell, T. D. A. 3. Helix lior- 
tenaia in Newfoundland. Nautilus, 
Boston, Mass., 20, 1906, (94). 
Cockerell, T. D. A. 4. A new 
Tertiary Planorbia. Nautilus, Boston, 
Mass., 19, 1906, (100-101). Errata. 
Z.c. (120). 
Cockerell, T. D. A. 5. Subspecies, 
mutations and forms. Nautilus, Boston, 
Mass., 20, 1906, (58-60). 
Colgan, N. 1. New Marine Mollusca 
from Co. Dublin. Irish Nat., Dublin, 
15, 1906, (172). 
Colg“an, N. 2. Marine Mollusca of 
South-east Wexford. Irish Nat., Dublin, 
15, 1906, (235). 
Collet, A. vide Roux, C. and Collet. 
Collot, L. Sur le Reineekea angustilo- 
bata Bras. sp. et la Praeeonia dollfiissi 
Jul. Rasp, du Callovien. Feuille jeunes 
natural., Paris, 36, 1905, (25-28). 
Comber, E. A List of the Marine 
Mollusca in the Bombay Natural History 
Society’s collection. Bombay, J. Nat. 
Hist Soc., 17, 1906, (207-218). 
Combes, Paul. Sur l’extension de 
l’invasion marine du Sparnacien supe- 
rieur aux environs de Paris. Paris, 
C.-R. Acad. Sci., 142,1906, (1574-1576). 
Cooke, C. M., jun. vide Pilsbry, H. A. 
and Cooke. 
Cooper, J. [James] E. [Eddowes]. 
British species of Vallonia. J. Conch., 
Leeds, 11, 1906, (341). 
Comet, J. 1. Le terrain liouiller 
sans houille (H 1 a) et sa faune dans le 
bassin du couchant de Mons. Liege, 
Ann. Soc. Geol. Belgique, 33, 1906, 
(M. 139-152). 
Comet, J. 2. Sur la faune du 
terrain liouiller inf^rieur de Bandour 
(Hainaut). Paris, C.-R. Acad. Sci., 142, 
1906, (734-736). 
Cossmann, M[aurice]. Description de 
quelques Pelecypodes Jurassiques de 
France. Paris, C.-R. Ass. fran£. avanc. 
sci., 34, 1906, (284-297). 
Crick, G. [George] C. [Charles]. 1. 
On some fossil Cephalopoda from North 
Cornwall, collected by Mr. Howard Fox, 
F.G.S. Penzance, Trans. R. Geol. Soc. 
Cornwall, 13, 1906, (63-71, 1 pi.). 
Crick, G. O. 2. Note on a rare form 
of Actinocamax (A. groaaouvrei ) from 
the Chalk of Yorkshire. Naturalist, 
London, 1906, (155-158). 
Crossland, Cyril vide Eliot, C. N. E. 
Crowther, John E. Teatacella acutu- 
lum at Itastrick. Naturalist, London, 
1906, (252). 
Cu&iot, L. Les Eolidiens emprun- 
tent leurs n^matocystes aux Coelent^res 
dont ils se nourrissent. Paris, C.-R. 
soc. biol., 61, 1906, (541-543) ; Re- 
union biologique de Nancy, 1906, (59- 
61). 
Da Costa, S. [Solomon] I. [Israel] 1. 
Descriptions of new species of Drymceua, 
Arnphicyclotua and Neoeyclotua, from 
South and Central America. London, 
Proc. Malac. Soc.‘, 7, 1906, (7-10), pi. i. 
Da Costa, S. I. 2. Description of a 
new species of Achatina from Mashona- 
land. London, Proc. Malac. Soc., 7, 
1906, (11, fig.). 
Da Costa, S. I. 3. Descriptions of 
new species of land shells from Pern 
and Colombia and two new species of 
Curvella from the Philippine Islands, 
London, Proc. Malac. Soc., 7, 1906, (97- 
99, pi. xi.). 
Dacqu6, Edgar. 1. Einiges fiber 
den Gattungs- und Artbegrilf. Diirk- 
lieim, Mitt. Pollichia, 60, No. 18, 1903, 
(36 pp., 2 pis.). 
Dacqutf, E. 2. Zur systematischen 
Speziesbestimmung. N. Jahrb. Min., 
Beilage, 22, 1906, (639-685). 
Dahlgren, B. E. The development of 
a mollusk. A guide to the series of 
models illustrating the development of 
Crepidida. Guide Leaflet No. 21 in 
Amer. Mus. J., New York, N.Y.,6, 1906, 
(28-53, with text fig.). 
Dali, W. [William] II. [Healey]. 1. 
Note on some forgotten mollusk-names. 
Nautilus, Boston, Mass., 19, 1906, (104- 
105.) 
Dali, W. H. 2. Note on Vitrina 
pfeifferi Deshayes. Nautilus, Boston, 
Mass., 19, 1906, (107-108). 
Dali, W. H. 3. On a new Floridian 
Callioatoma. Nautilus, Boston, Mass., 
19, 1906, (131-132). 
