BRACHIOPODA. 
237 
application of this term can be based. It is therefore necessary to take the 
first species of the typical snbgenus Pronites* (Pronites adscendens) as the type 
of Clitambonites ; and it will probably prove desirable to limit the application 
of this term pretty nearly to the typical division included by Pander under 
Figs. 5, 6. Orthambomtes transversa. After Pander. 
Pronites ; that is, to shells having the lower valve flat, the upper valve with 
the greatest elevation at the beak, the greatest width of the shell along the 
hinge, and the cardinal area vertical. It will probably be unwise to attempt 
to maintain the term Gonambonites for forms similar in all respects to Clitam¬ 
bonites except in having a backward inclination of the cardinal area. 
With the foregoing definition of Clitambonites, d’Orbigny’s Orthisina is ap¬ 
parently a synonym. The name was proposed in the Comptes Rendus, in 1847, but 
no example was cited. It was again used in the same year in the Annales des Sci¬ 
ences Naturelles, and accompanied by a figure without specific name. In 1850 it 
was used in a later volume of the same work, without the specification of a type, 
Figs. 7, 8. Gonambonites lata. After Pander. 
but with mention of three species: (1) O. anomala, Schlotheim; (2) O. adscendens, 
Pander; (3) 0. Verneuili , von Eichwald; and in the same year the name is again 
defined in his Prodrome de Paleontologie Stratigraphique, etc., with the species cited 
in the following order: (1) 0. Verneuili, (2) 0. anomala, (3) 0. adscendens. 0. 
Verneuili, if taken as the type of this group, presents a species in all generic 
features identical with Clitambonites adscendens. Should, however, 0. anomala be 
regarded as the typical species of Orthisina, it may eventually be desirable to 
* It appeal's that Pronites was also a preoccupied term, having been used by Iliiger for a genus of 
birds, in 1811. 
