806 



PROF. G. C. BOURNE ON THE 



List of Literature referred to. 



(1) Amaudrut, a. — La pai-tie anterieure du tube digestif et la 



torsion chez les Mollusques gasteropodes. Ann. des Sci. 

 Nat. (8) vii. 1898, p. 1. 



(2) Bourne, G. 0. — "Contributions to tiie Morphology of the 



Group Neritacea of Aspidobranch Gastropods. — Part I. 

 The Neritidfe." Proc. Zool. Soc. Lond., 1908. 



(3) BouviEE, E. L. — ■'' Systeme nerveux, Morphologie generale 



et Classification des Gasteropodes Prosobranches." Ann. 

 des Sci. Nat. (7) iii., 1887. 



(4) IsBNKRAHE, C. — " Anatomie von Helicina titanica." Arch. 



f. Naturgeschichte, xxxiii., 1867, p. 50. 



(5) Jhering, H. von. — Yergleichende Anatomie des Nerven- 



systems und Phylogenie der Mollusken. Leipzig, 1877. 



(6) KoBELT, "W. — Studien zur Zoogeographie. Wiesbaden, 1897. 



(7) SiMROTH, H. — " Neuere Arbeiten liber die Morphologie und 



Biologie der Gastropoden." Zool. Zentralblatt, Bd. xvi., 

 1909. 



(8) SiMROTH, H. — "The Anatomy of the Neritidse." Proc. 



Malacol. Soc. Lond., ix. 1910, p. 27. 



(9) Thiele, J. — " Die systematische Stellung der Solenogastren 



und die Phylogenie der Mollusken." Zeitschr. f. wiss. 

 Zool., Ixxii. 1902, p. 249. 



(10) Thiele, J. — " Ober die Anatomie von Hyclrocena cattaroensis 



Pf. Abh. d. Senckenbergischen Naturf. Gesell., xxxii., 

 1910. 



(11) Troschel. — Das Gebiss der Schnecken. Berlin, 1856-1863, 



Bd. i. pp. 75-85. 



(12) Wagner, A. J. — " Helicinenstudien." Denkschr. d. kais. 



Akad. d. Wissenschaften, Wien, Bd. Ixxvii., 1905, and 

 Ixxviii., 1906. 

 (A complete list of the literature of the Neritoidea is given in 

 my previous paper [2]). 



EXPLANATION OF THE PLATES. 



Plates XXX.-XLII. 

 Lettering in all the figures. 



an. Anus. 

 ao. Aorta. 

 ap. mg. Aperture of liypobranchial 

 gland. 

 Au. Auricle. 

 hue. Buccal cavitj'. 

 ccB. Cajcum of ootype. 

 cl. Cloaca, 

 c. m. I. Left columellar muscle. 

 c. m. r. Right columellar muscle. 

 com. hucc. Buccal commissure. 

 com. cer. Cerebral commissure. 

 com., lah. Labial comiuissure. 

 com. pel. Pedal commissure. 

 com. pi. Pleural commissure. 



con.ped. Cerebro-pedal connective. 

 con.pl. Cerebro-pleural connective. 

 c. ph. Lateral pharyngeal cartilage. 

 div. Diverticulum of male gona- 

 duct. 

 J5?. Eye. 

 F. Foot. 

 g. hucc. Buccal ganglion. 

 g. cer. Cerebral ganglion. 



Gd. Gonaduct. 

 gl. pd. Pedal gland. 

 gl. r. Glandular ridge on floor of 



the oesophagus. 

 g. pi. Pleural ganglion. 

 Int. Intestine. 



