TITLES. 23 



437. Martens, E. von. On the Occurrence of Marine Animal Forms in 

 Fresh Water. (3) i, pp. 50-63 [1858, Jan.]. 



From 'Wiegmanu's Archiv, 1857, p. 188.' 



438. Moore, E. On the occurrence of the Teredo navalis and Limnoria 

 terebrans, in Plymouth Harbour. Mag. Nat. Hist. n. s. ii, pp. 206- 

 210 [1838, April]. 



439. MoRCH, O. A. L. Observations on Conchological Nomenclature. 

 (3) ii, pp. 133-139 [1858, Aug.]. 



440. Morris, J. Description of some new species of the genus Ancylo- 

 ceras. xv, pp. 31-34, pi. vi [1845, Jan.]. 



441. . Description of a new species of Nautilus [iV. saxhii] fi-om the 



Lower Greensand of the Isle of Wight. (2) i, pp. 106 & 107, fig. 

 [1848, Feb.]. 



442. . Description of a species of Belemnite, with Observations on 



Aptychus. (2) x, pp. 355 & 356, pi. v [1852, Nov.]. 



443. Moser, I. J. Eolis landsburgii. (2) xix, p. 498 [1857, June]. 



444. MoussoN, A. On the Land Shells of Lanzarote and Fuerta Ventura ; 

 with observations on the ]\Iolluscan Fauna of the Canary Islands in 

 general. Translated (with notes and additions) by E. T. Lowe. 

 (3) iii, pp. 81-91 [1859, Feb.]. 



From Hartung's 'Geol. Verhalt.... Lanzarote und Fuerta Ventura,' 1857. 



445. MiJLLER, H. Note upon the Male of the Argonaut and the Hecto- 

 cotylus. (2) ix, pp. 492-494 [1852, June]. 



From 'Ann. Sci. Nat. xvi.' 



446. MuLLER, J. Upon the Development of Mollusks in Holothunas. 

 (2) ix, pp. 22-39 [1852, Jan.]. 



With Translator's note : see also pp. 103-112 [1852, Feb.]. 



447. Murray, A. Notice of a marked variety of Patella imlgata (proposed 

 to be named var. intermedia), found in Guernsey and Jersey (from 

 infurmation communicated by Dr Knapp). (2) xix, pp. 211-213 

 [1857, March]. 



448. NoRJiAN, A. M. On the Discovery of Phi/sa acuta (Drap.) in 

 England. (3) vii, pp. 114-116, pi. ix [1861, Feb.]. 



449. . Note on Physa acuta (Draparnaud). (3) ix, pp. 185 & 186 



[1862, Feb.]. 



450. Orbigny, a. D'. On the Laws which regulate the Geographical 

 Distribution of Littoral Mollusca. xv, pp. 42-45 [1845, Jan.]. 



451. Owen, R. Observations upon the Camerated Structure in the 

 Valves of the Water-Clam {Spondylus varius, Sow.). Mag. Nat. Hist, 

 n. s. ii, pp. 407-412, figg. [1838, Aug.]. 



452. . On the Structure and Homology of the Cephalic Tentacles in 



the Pearly Nautilus, xii, pp. 305-311 [1843, Nov.]. 



453. . [Letter on] Mr Cuming's collection of shells. (2) i, pp. 149- 



153 [1848, Feb.]. 



454. Paget, J. Description of a new Helix from Montpellier, and a new 

 Hydrobia from Nice, with Observations on some varieties of the 

 Extra-marine Shells of those districts. (2) xiii, pp. 454-458, 505 

 [1854, JuncJ. 



