644 PROCEEDINGS OF THE. ACADEMY OF [DeC, 



shell was taken at Pirangj'', twenty miles south of Natal. A single 

 dead specimen taken at Camocim was sent from the Goeldi Museum, 

 The living shells were taken under rocks where they were aestivating. 



Anostoma octodentatum F. de Waldheim. 



Museum Demidoff, III, p. 230 (1807). 

 One specimen was taken at Baixa Verde associated with the more 

 common A. depressum, a single specimen taken at Camocim was 

 sent from the Goeldi Museum and a third specimen taken "30 or 40 

 miles south of Mossoro, State of Ceara," was sent to Dr. Branner 

 by Mr. G. A. Waring. All were dead, making the determination 

 rather difficult, and each had only seven teeth, but as each has the 

 columellar lamella which is lacking in all specimens of depressum, it 

 seems justifiable to assign them to this species. 



AOHATINID^. 

 Genus SUBULINA Beck. 

 Subulina OOtona (Bruguiere). 



Bulimus odonus Brug., Encvcl. Meth., I, p. 325 (1792). 



Subulina odona Brug., Pilsbry, Man. Conch., (2), XVIII, p. 72, pi. 12, figs. 

 8,9. 



Specimens of this widely distributed species were taken at Ceara, 

 Para, Itacoatiara, and Camp 39, M. & M. R. R. 



Genus OPEAS Albers. 

 Opeas gracile (Mutton). 



Bulimus gracilis Hutton, Jour. Asiat. Soc, Bengal, III, 1834, p. 84. 

 Opeas gracile Hutton, Pilsbry, Man. Conch., (2), XVIII, p. 12.5, pi. 18, figs. 

 3—6. 



About thirty specimeixs were taken at Itacoatiara and a single 



specimen at Camp 39, M. & M. R. R. 



Opeas beckianum (Pfeiffer). 



Bulimus beckianus Pfr., Symbolse ad Hist. Heliceorum, III, p. 82 (1846). 

 Opeas beckianum Pfr., Pilsbry, Man. Conch., (2), XVIII, p. 189, pi. 27, figs. 

 42-46, 54, 55. 



This species was taken in considerable numbers at Camp 39, 



M. & M. R. R., and a very small variety was common atCeara-Mirim. 



Opeas octogyrum (Pfeiffer). 



Bulimus odogyrus Pfr., Malak. bl.. Ill, 1856, p. 45. 



Opeas octogyrum Pfr., Pilsbry, Man. Conch., (2), XVIII, p. 206, pi. 29, figs. 

 75-79. 



One or more specimens were taken at each of the following places : 

 Ceard-Mirim, Quixada, Para, Itacoatiara, and Camp 39, M. & M. 

 R. R. A single specimen ''from the State of Ceara" was sent by 

 Mr. Rocha. 



