-  61  - - 
List  of  Littérature. 
The  following  books  and  papers  were  consulted: 
BAKER  FRED., 
The  land  and  fresh-water  mollusks  of  the  Stanford  Expedition 
to  Brazil  (Pi.  XX-XXVII).-  Proceed,  of  the  Acad, 
of  nat.  Sc.  of  Philadelphia,  Vol.  LXV,  Part  III, 
(1913)  1914. 
BIOLOGIA  CENTRALI-  Von  Martens,  Land  and  Freshwater  Mollusca.  1890-1910. 
AMERICANA  (GOD- 
MAN  &  SALVIN.) 
BRAUER  A., 
Die  Suesswasserfauna  Deutschlands,  Heft  19,  Mollusca  von 
Joh.  Thiele.- Berlin  1909. 
JAY  JOHN  G, 
KOBELT  W., 
MOQUIN-TANDON  A., 
Catalogue  of  the  shells,  arranged... -New  York,  1882. 
Illustriertes  Conchylienbuch.  —  Nuernberg,  1878. 
Histoire  naturelle  des  mollusques  terrestres  et  fluviátiles  de 
France.  Atlas  de  54  planches  (col.)  et  descrip¬ 
tions  (T.  II).—  Paris,  1855. 
MORICAND,  STEFANO, 
Mémoires  sur  quelques  coquilles  fluviátiles  et  terrestres  d’Amé¬ 
rique  (Extrait  des  mémoires  de  la  Société  de  Phy¬ 
sique  et  d’Histoire  naturelle  de  Genève).  1837. 
ORBIGNY  ALCIDE  d’, 
REEVE,  LOVELL 
SPIX  et  WAGNER, 
Voyage  dans  l'Amérique  méridionale,  T.  V. -Paris  1847. 
Conchologia  Iconica.- London,  1842. 
Testacea  Fluviatilia  Brasiliensia.  -  Muenchen  1827.  (Mit  col. 
Bildern.,) 
VON  MARTENS,  E, 
Die  Binnenmollusken  Venezuelas. 
I  have  not  been  able  to  consult  the  last  paper  but,  thanks  to  Prof  CARLOS 
BRUCH  in  La  Plata,  I  obtained  a  copy  of  the  parts  refering  to  PI.  guadalou- 
pensis,  cultratus  and  pronus. 
