58 
cimex  MOR.  Fig.  14,  a,  b,  (Cop)  Bahia 
(MORICAND),  Pará  (F.  BAKER), 
Rio  de  Janeiro,  (LUTZ.> 
confusus  n.  n.  Rio  de  Janeiro  (D’ORB., 
LUTZ) 
cultratus  D’ORB.  Descr.  from  the  An¬ 
tilles.  (Acc.  to  F.  BAKER  in  the 
lake  Papary,  Rio  Grande  do  Norte.) 
depressissimus  MOR. -Bahia,  F.  15  a,  b. 
fCop). 
ferrugineus  SP1  X=oUvaceus  SPIX  (F.  1, 
cop),  ferrugineus  D’ORB.=confusus 
n.n.). 
heloicus  D’ORB.  Montevideo,  F.  11  a,  b, 
cop.)  hardly  larger  than  cimex 
MOR.,  the  name  of  which  is  ante¬ 
rior. 
helophilus  D’ORB.  Callao  Peru  F,  12  a, 
b.  (cop.)  In  the  Museu  Paulista  there 
exists  an  apparently  identical  species 
from  Itatiba. 
kermatoides  D’ORB.  Calláo,  Peru.  F.  9, 
a,  b.  (Cop). 
( lugubris  WAGNER =nigticans  SPIX) 
rnontanus  D’ORB.  Lake  Titicaca.  -  Fig. 
6  (cop.) 
nigricans  SP\X=lugubris  WAGN ,=tena- 
gophilus  D’ORB).  (Cop.  fig.  3,  4). 
Ilheos  and  Almada,  Bahia. 
olivaceus  SPIX  (cummingianus  and  ba- 
hianus  DUNKER  (Fig.  2.  Cop). 
pedrinus  MILLER.  Ecuador  F.  19  (cop. 
from  KOBELT).  (perhaps  a  new 
form  of  the  species  called  pere¬ 
grinas  by  D’ORB). 
peregrinus  D’ORB.  Uruguay,  Argentine, 
Ecuador  ?  (F.  BAKER  places  spe¬ 
cimens  from  Rio  Grande  do  Norte 
and  from  Ceará  here.)  Fig.  8  a,  b 
(cop). 
peruvianus  BROD.  Perú.  BRODERICK 
and  D’ORBIGNY  (Fig.  16  cop. 
from  REEVE). 
pronas  VON  MARTENS.  Lake  Valentia, 
Venezuela. 
stramineus  PFEIFFER  (cop.  from.  RE¬ 
EVE  Hab?(F.  BAKER  places  here 
a  specimen  form  the  coast  of 
Ceará). 
tenagophilus  D’ORB.  (cop.  in  the  fig.  7, 
a,  b).=nigricans  WAGNER,  Argen¬ 
tina  and  Bolivia  (BRAZIL). 
Of  the  sub-genus  Segmentina,  on  the 
mouth  of  which  there  are  elevations  simu¬ 
lating  teeth,  there  is  a  species  janeirensis 
CLESSIN,  and  F.  BAKER  describes  another 
one,  paparyensis  which  he  considers  new 
and  which  was  found  in  the  lake  Papary  in 
Rio  Grande  do  Norte  (Fig.  20  a,  b,  cop.). 
Appendix. 
Copies  of  descriptions  by  dif¬ 
ferent  authors. 
1.  Planorbis  peruvianus  D’ORB. 
(Proc.  zool.  soc.  1882,  p.  125.) 
P.  testâ  discoideâ,  pellucidâ,  globulosa 
albidâ,  striatâ,  superne  concavâ,  infundibuli- 
formi,  subtus  planâ;  anfractibus  quinqué, 
convexis,  ultimo  subdepresso;  suturâ  pro¬ 
fundé;  aperturâ  obliquâ,  subdilatâ.  Diam.  10, 
ait.  8  millim. 
Hab.  Trujillo  (BRODERICK)  e  Callao 
(D’ORBIGNY),  Perú. 
2.  Planorbis  montanus  D’ORB. 
P.  testâ  discoideâ,  pellucidâ,  diaphanâ, 
subdepressâ,  albidâ,  substriatâ,  superne  sub- 
planâ,  subtus  concavâ;  anfractibus  quatuoi 
subconvexis  :  suturâ  profundé,  apertura 
obliquâ;  sub-pentagonâ.  Diam.  16,  ait.  6 
millim. 
Hab.  Lago  Titicaca,  Bolivia. 
3.  Planorbis  andecolus  D’ORB. 
P.  corpore  brunneo-rubescente. 
Testâ  elevatâ,  subcrassâ,  minutissime 
striatâ,  griseo-brunnescente,  superne  plano- 
convexâ,  subcarinatâ,  subtus  maxime  umbi- 
licatâ,  carinatâ,  infundibuliformi,  anfractibus 
tribus  subconvexis:  suturâ  profundâ;  apertu¬ 
râ  magnâ,  subdilatatâ,  pentágona.  Diara.  13, 
alt.  8  millim. 
Hab.  Lago  Titicaca. 
