MR. BRODERIP ON CLAVAGELLA. 263 
nous venons de découvrir 4 Vile de Bourbon! :”’ he adds?, ‘‘ Quant a l’animal, nous ne 
le connaissons pas.” 
M. Sander Rang finishes the article on Clavagella with the following paragraph : 
““On a découvert récemment dans les mers de Sicile une coquille assez voisine des 
Clavagelles, mais que, selon nous, on ne doit pas rapporter 4 ce genre. Cette coquille, 
logée dans une cavité particuliére creusée dans les pierres, a ses valves libres, tandis 
que l’ouverture de cette cavité est munie supérieurement d’un tube faisant l’effet d’une 
cheminée, bordé a son orifice d’une manchette analogue a celle de certains Arrosoirs. 
Cette coquille ne peut point appartenir aux Clavagelles, qui ont une valve soudée ; 
nous pensons plutdt qu’elle devra former un genre dans le voisinage des Gastrochénes, 
car probablement le tube ne s’éléve pas seulement a Vorifice de sa demeure. Il y a lieu 
de croire que, comme dans les Gastrochénes, il se prolonge inférieurement dans cette 
cavité quwil tapisse, et par ce moyen enveloppe la coquille; ce serait donc avant les 
Gastrochénes, et dans la division c), qu’il faudrait Ja placer. 
** ¢) Quelquefois un tube enveloppant toute la coquille et non soudé3.” 
If M. Sander Rang here allude to the species communicated by M. Audouin to the 
Académie des Sciences, and if the description of the former be an accurate account of 
the “‘ Clavagelle vivante” of M. Audouin, the species cannot be that which I am about 
to describe in this memoir under the name of Clav. Melitensis; for my species has “‘une 
valve soudée :” but I regret that I have not access to M. Audouin’s memoir, which 
would probably relieve me from the doubt that I may possibly be describing his Sicilian 
Clavagella under the name of Clav. Melitensis. 
Mr. Cuming, in the course of his voyage, dredged up from a depth of eleven fathoms, 
at the island of Muerte, in the bay of Guayaquil, a fragment of calcareous grit, of 
modern appearance, such as Mr. Samuel Stutchbury found forming the solid reefs 
which bound the islands designated by him as ‘‘ mineral,” in contradistinction to those 
which are, superficially at least, coral. In this calcareous grit was the greater portion 
of the chamber and tube, both valves, and the soft parts of a very fine Clavagella'. 
These parts are now in the able hands of my friend Mr. Owen, and form the subject 
of the interesting memoir which follows this paper. 
A close examination of the recent species has convinced me, that though one valve 
is always fixed or imbedded in the chamber, and soldered, as it were, to the tube, so as 
to make one surface with it, the tube is not necessarily continued into a complete testa- 
ceous clavate shape. In Mr. Goldsmid’s best and largest specimen‘, the fixed valve is 
imbedded in the coral®, and, though continued on to the tube or siphonic sheath’, is sur- 
rounded by the wall of the coral chamber at its anterior extremity’. In the other spe- 
cimen the fixed valve is also continued on to the tube. 
' p. 339. 2 p. 341. 3p. 342. + Plate xxx. Figg. 8—16. > Plate xxxv. Fig. 1. 
© Thid. a’. 7 Ibid. d. 8 Ibid. a. * Ibid. Fig. 2. 
