8 SMITHSOXIAX MISCELLANEOUS COLLECTIOXS VOL. 52 



G. Gardner: Geological notes made during a jouriley from the coast into the 



interior of the Province of Ceara, etc. Edinburgh New Philosophical 



Journal, xxx, 1841, 75-82. Edinburgh, 1841. 

 George Gardner : On the existence of an immense deposit of chalk in the 



northern provinces of Brazil. Proc. Philosophical Society of Glasgow, i, 



146-153. Glasgow, 1844. 

 George Gardner : Peixes petrificados que se-achao na provincia do Ceara. 



Journal do Commercio, Rio de Janeiro, 9 de Abril de 1842; also appendix 



to Bouee's "Geologia Elementar," pp. 54-55. Rio de Janeiro, 1846. 

 George Gardner: Travels in the interior of Brazil, 1836-1841. London, 1846. 

 L. Agassis : On the fossil fishes found by Air. Gardner. Edinburgh New 



Philosophical Journal, xxx, 1841, 83. 

 L. Agassiz : Recherches sur les poissons fossiles. Neuchatel, 1833-1843, 11, 



40, 139, 303-304 ; IV, 293 ; V, 103, 122, 134. 

 L. Agassiz : Sur quelques poissons fossiles du Bresil. Comptes Rendus, xviii, 



1007-1015. Paris, 1844. 

 F. Chabrillac : Sur quelques poissons fossiles de la province de Ceara au 



Bresil. Comptes Rendus, xviii, 1007. Paris, 1844. 

 GuiLHERME S. DE CapanEma: Trabalhos da Commissao Scientifica de Ex- 



ploragao. Introducgao. Rio de Janeiro, 1862. Sec(;aa Geologica, pp. 120- 



143- 

 E. D. Cope: On two extinct forms of Physostomi of the neotropical region. 



Proc. Am. Phil. Soc, xir, 53-55. Philadelphia, 1871. 

 A. Smith Woodward : On the fossil Teleostean genus, Rhacolepis Agass. 



Proc. Zool. Soc. London for 1887, 535-542. 

 J. C. Branner: Geologia Elementar preparada com referenda especial aos 



estudantes Brazileiros. Rio de Janeiro, 1906, pp. 273-274. 



B. Notes ox the Fossil Fishes of Ceara 



Analytical Key to the Cretaceous Fishes Known from Ceara 



a. — GanoidEi : Scales large, diamond-shaped or plate-like ; tail strongly hete- 

 rocercal ; dorsal inserted behind the ventrals. 

 b. — (Aspidorhynchid.^) : Scales plate-like, those on the sides of the 

 body much deeper than the others; both jaws much elongate, 



pointed Belonostomus comptoni, i 



bb. — (Semionotid.e) : Scales large, firm, diamond-shaped; a series of 

 spine-like scales along middle of back; jaws not greatly elongate. 



Lepidotes tcmnurus, 2 

 aa. — Isospondyli : Scales thin, cycloid or rhombic; no spines in fins; tail 

 homocercal or slightly heterocercal ; snout (in Brazilian Cretaceous 

 species) not produced. 



d. — (LEPTOLEPiD.ii) : Scales small, thin, more or less diamond- 

 shaped, at least along back ; tail somewhat heterocercal, the 

 last vertebra reduced in size and turned upward ; ventral 

 fins inserted under front of dorsal ; subopercle small, its 

 suture horizontal; cheek and postorbital region with three 

 large plates (gular plate unknown) ; distance from gill open- 

 ing to dorsal not greater than depth of body. 



Tharrhias araripis. 3 



