DATE. 



141 



The Monograph of this genus, in No. 12. Thesaurus Conchy- 

 liorum contains, apart from Meroe, Artemis and Circe, 115 

 species. See Meketbix. C. Meretrix. PL vi. fig. 117, and 

 117, a. b. c. d. 

 CTETULTJS. Hinds. 1844. A genus founded on a turbinella- 

 like shell, thus described, (translation) " fusiform ; the two last 

 whorls turbinated, the spire suddenly rising ; aperture linear, 

 ending in a short efiuse canal ; columella much arched, callous 

 above ; outer lip acute ; umbilicus small ; epidermis smooth." 

 C. serotinus. PI. xxviii. fig. 594. 

 DACTTLINA. Gray. Syn. B. Mus. Pholas Dactylus, and 



other species, with several accessory valves. PL ii. fig. 55. 

 DACTYLUS. Schum. 1837. Species of Act^ok or Tobna- 

 TELLA, which have a duplicate fold at the lower part of the 

 columella. T. solidula. 

 DACTYLUS. Humph. Marginella, Auct. 

 DAPHNELLA. Hinds. Voyage of the Sulphur, p. 25. PL vii. 

 fig. 19, 20, 21. " Among the smaller Pleurotomacese are a few 

 shells of a thin fragile structure, elongated in form, the outer 

 lip acute and separated from the last whorl so as to leave a sinus, 

 aperture of a lengthened oval, scarcely any canal, and with the 

 surface usually transversely striated. These form a very dis- 

 tinct group, and may be separated with advantage under a 

 proper head ; the best known of these is probably Lymnaeformis 

 Kiener." Ex. D. Marmorata, our PL xxviii. fig. 593. 

 DAEACIA. Gray. A subgenus of Pyrgoma, including a species 

 which is remarkable for the irregularity of its form. It grows 

 upon a species of Monticularia, and the margin takes the shape 

 of the lobes by which it is surrounded. The aperture is large, 

 and completely closed by the operculum. Daracia (Pyrgoma) 

 Monticularise. PL xxiv. fig. 489, 490. 

 DATE. A common name' given to shells of the genus Pholas, on 

 account of their cylindrical form and consequent resemblance to 

 the fruit. Por the same reason the name Pholas Dactylus has 

 been given by Naturalists to the species which we represent, 

 fig. 66. 



