The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . first [Teredina,Lam.] has a little, spoon-shaped cavity in each valve, and a little loose piece, in form of a shield, at the other (Clavagella, Lam.) has one of its valves agglutinated to the tube, and the other loose. A living speciesis found in the madrepores of the Sicilian seas, which has been described by M. Audouin. [The best descriptionof this genus is given by Messrs. Broderip and Owen in the Trans, of the Zoological Society.] Some naturalis
The animal kingdom, arranged after its organization : forming a natural history of animals, and an introduction to comparative anatomy . first [Teredina,Lam.] has a little, spoon-shaped cavity in each valve, and a little loose piece, in form of a shield, at the other (Clavagella, Lam.) has one of its valves agglutinated to the tube, and the other loose. A living speciesis found in the madrepores of the Sicilian seas, which has been described by M. Audouin. [The best descriptionof this genus is given by Messrs. Broderip and Owen in the Trans, of the Zoological Society.] Some naturalists think we should also place in this family The Aspergillum,— The shell of which is formed of an elon-gated, conical tube, closed at its widest ex-Vi^^l^^ trcmity by a disk perforated with numerous*t~f ?>ma\\ tubular holes ; the httle tubes of the? j^ outer range, being longest, form a kind ofcorolla round it. Tiie reason for approxi-mating them to tlie Acephala with tul)es is F,B 193-Aspergillum. f^jj^j j„ ^,^g f.^^^ ^^^^ ^^^^.^ j^ ^ ^j^^^j^j^ • According lo Deshnyes, rinslrociieena and Fistulana are tlie same.— 382 MOLLUSCA. projection on one part of the cone, which really resembles the two valves of the Acephales. The re-semblance between its little tubes, and those which envelope the tentacula of certain Terebella, formerlycaused this animal to be referred to the Annelides. The best known species (Asp. jafanus) is seven or eight inches in length. [Rang conjectures that the animalof Aspergillum is essentially the same as that of Clavagella, and, as well as Blainville, he erroneously thinks thatboth are furnished with a byssus passing through all the anterior apertures of the tube, to attach it to foreign Aspergillum probably burrows in sand, the disk underneath, and the tubular part uppermost.] THE SECOND ORDER OF THE ACEPHALES. THE SHELL-LESS ACEPHALES, (or A. nuda). * This is a small order, and differs so far from the otlier Acephales that it mi
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Keywords: ., bookcentury1800, bookdecade1840, booksubjecta, booksubjectzoology
