204 LITERATURE OF THE SCAPHOPODA 
the posterior aperture. Genera—Dentalium, Linnaeus ; posterior orifice 
of the shell truncated, entire, without an incision or accessory tube. 
Antalis, Adams ; posterior orifice with a short incision. issidentalvwm, 
Fischer ; posterior extremity with a long fissure on the ventral side ; 
abyssal. Fustiaria, Stoliczka. Schizodentaliwm, Simroth ; ventral border 
of the posterior aperture with a series of small 
a f/f’ _ holes arranged in a straight line. Heterochisma, 
; Sunroth. 
Fia. 186. Faminy 2. SIPHONOPODIDAE, Simroth. 
Cadulus gracilis, Jeffreys, shell, Foot expanded distally into a symmetrical disc, 
bee raat ys Bee ee ; with a crenate continuous edge (Fig. 183) or 
son.) simple and vermiform without well-developed 
lateral processes ; shell often contracted towards 
the anterior aperture. Genera—Siphonodentalium, Sars; foot ending 
in a median disc without a median appendage. Cadulus, Philippi 
(Fig. 186). Dischides, Jeffreys. Pulsellum, Sars ; terminal dise of the foot 
with a median appendage. Hntalina, Monterosato. 
LITERATURE OF THE SCAPHOPODA. 
1. Boissevain. Beitrage zur Anatomie und Histologie von Dentalium. Jenaische 
Zeitschr. xxxvili. 1904. 
2. Clark, W. On the Animal of Dentalium tarentinum. Ann. and Mag. of 
Nat. Hist. (2), vii. 1851. 
3. Deshayes, G. P. Anatomie et monographie du Genre Dentale. Mém. Soe. 
Hist. Nat. Paris, ii. 1825. 
4. Fol, H. Sur Vanatomie microscopique du Dentale. Arch. Zool. Expér. et 
Gén. (2), vii. 1889. 
. Kowalewsky, A. Etude sur l’embryogénie du Dentale. Ann. Musée d’Hist. 
Natur. Marseille, Zool. i. 1883. 
6. Lacaze-Duthiers, F. J. H. Histoire de Vorganisation et du développement 
du Dentale. Ann. des Sci. Nat. Zool. (4), vi. vii. 1856-1857. 
7. Léon. Zur Histologie des Dentalium Mantels. Jen. Zeitschr. f. Naturw. 
Bd. xxix. 
8. Nassonow. Zur Morphologie der Scaphopoden. Biol. Centralbl. x. 1890. 
9. Plate, Z. Ueber den Bau und die Verwandtschaftsbeziehungen der Soleno- 
conchen. Zool. Jahrb., Abth. f. Anat. u. Ont. v. 1892. 
10. Sars, M. Om Siphonodentalium vitreum, en ny Slaegt og Art af Dentali- 
dernes Familie. Universitets programm. Cluistiania, 1861. 
Malakologiske Jagttagelser—II. Nye Arten af Slaegten Siphonoden- 
talium. Forh. Vidensk. Selsk. Christiania, 1865. 
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