TITLES. 
Cost. 5 
33. Drevermann, F. Die Fauna dcr Untercoblenzschichten von Ober- 
stadtfeld bei Daun in der Eifel. Palocontogr. xlix, pp. 73-120, pis. ix- 
xiv. [Unimportant for Ccelenterata.] 
Summary, Zool. Centrlbl. ix, p. 549. 
34. Driesch, H. Uber ein neues harmonisch-aquipotentielles System 
und iiber solche Systeme iiberhaupt. Arch. Entwickmech. xiv, 
pp. 227-246, 7 text-figg. [Unimportant for Ccelenterata.'] 
Summary, Zool. Centrlbl. ix, p. 672. 
35. -. Studien iiber das Regulationsvermogen der Organismen. 
7. Zwei neue Regulationen bei Tubularia. T. c. pp. 532-538, 
2 text-figg. 
Summary, Zool. Centrlbl. ix, p. 765. 
36. Duerden, J. E. [Review of Vaughan’s work on “ Some fossil corals 
from the elevated reefs of Cura§ao, Arube and Bonaire,” see Zool. Rec. 
xxxviii (132).] Science xv, pp. 143-145. 
37. -. Primary hexamerism in the Rugosa ( Tetracoralla ). T. c. p. 577. 
38. -. Aggregated colonies in Madreporarian corals. Amer. Natural. 
xxxvi, pp. 461-471, 3 text-figg. 
39. -. West Indian Madreporarian polyps. Mem. Ac. Washington 
viii, 7tli Memoir, pp. 401-597, pis. i-xxv. 
39a. - . Development of Gonionema murbachii. P. Ac. Philad. liv, 
pp. 750-790, pis. xxxi-xxxiv. 
40. -. Relationships of the Rugosa (Tetracoralla ) to the living Zoan- 
tliese. Ann. Nat. Hist. (7) ix, pp. 381-398, 12 figg. [Also in Johns 
Hopkins Univ. Circ. xxi, pp. 19-25, 12 figg.] 
Summary, Zool. Centrlbl. ix, p. 439, and in J. R. Micr. Soc. p. 437. 
41. -. The morphology of the Madreporaria. ii. Increase of mesen¬ 
teries in Madrepora beyond the protocnemic stage. Op. cit. (7) x, 
pp. 96-115, 13 text-figg. [Also in Johns Hopkins Univ. Circ. xxi, 
No. 157, pp. 59-66.] 
Summary, Zool. Centrlbl. ix, p. 439. 
42. -. The morphology of the Madreporaria. ill. The significance of 
budding and fission. T. c. (7) x, pp. 382-393, 4 text-figg. 
Ehrenberg, C. G. [See Hemprich & Ehrenberg (81).] 
43. Elbert, J. Das untere Angoumien in der Osningbergketen des 
Teutoburger Waldes. Verh. Ver. Rheinland lviii, pp. 77-164, 4 pis., 
12 figg. 
44. Elrod, M. J. & Ricker, M. A new Hydra. Tr. Amer. micr. Soc. 
xxiii, pp. 257 & 258. 
45. Etheridge, R. Additions to the Middle Devonian and Carboniferous 
Corals in the Australian Museum. Rec. Austral. Mus. iv, pp. 253- 
262, pis. xxxvii-xl. 
46. Flamand, G. B. M. Sur la presence du terrain carboniferien dans le 
Tidikelt (Arcliipel touatien) Sahara. C.R. Ac. Sci. cxxxiv, pp. 1533- 
1536. 
47. Forel, F. A. Le Leman, monographic limnologicjue. hi. Lausanne, 
1902. [Ccelenterata, p. 128.] 
48. F[owler], G. H. Ccelenterata. Enc. Brit, xxvii, pp. 130 & 131. 
49. -. Ctenophora. T. c. pp. 300 & 301, 4 figg. 
