Occasional Papers of the Museum of Zoology 43 



00. Less depressed, major index around 160. 



P. Ricli chestnut in color with yellowish streaks and 

 darker lines at irregular intervals, but slight trace of 

 bands ; growth lines prominent. Las Nubes, 4000 ft., 

 Santa Marta Mts., Colombia (L n, 74)- 20; 157 



(31-5); aVs (0 Apcr.ostoma 



sanctacmartJiae Pilsbry and Clapp (1902) Nautilus. 



PP. Fulvous chestnut, with light, peripheral stripe, usually 

 bordered below by dark band. 



Q. Slightly more depressed ; black band above and 

 below peripheral stripe ; apex rose. Near Bogota, 



Colombia. 20; 167(33.5) ; 5 



Neocyclotus colombicnsis DaCosta (1901). 



QQ. Slightly more elevated; greenish around umbili- 

 cus ; growth lines plicate below. Quito, Ecuador. 



21.8; 157(34.2); 4'/^ 



Cyclostoma quitciisis Pfeiffer (1851). 



NN. Color predominantly greenish ; usually smaller and thinner shells 

 (but see dniikcri and corpulentus) . 



R. Much depressed shells; major diameter index over 180. 



S. Large and heavy shells. 



T. Last whorl swollen, almost solute ; color dark olive 

 brown with numerous, dark, spiral lines ; growth lines 

 prominent. San Sebastian, Colombia (L 11, 74). 19; 

 184(35). (*) Cyclotus corpulentus E. A. Smith (1878). 



TT. Last whorl normal ; color olive with light, peripheral 

 stripe, bordered by dark band below. New Granada; 



Riobamba, Ecuador. 17.8; 198(35.2); 4I/4 



Cyclotus dunkcri Pfr. ( 1856) . 



SS. Smaller and thinner shells ; fusco-olivaceous with black 

 band around periphery and another at base. 



U. Larger. Baeza, Ecuador. 13.6; 180(24.5); 4 



Cyclotus pcrczi Hidalgo ( 1866). 



ULT. Smallest. La Fria, Venezuela. 9.4; 181(17.0); 3%. 

 (!) P. dunkcri cardozi new. 



RR. More elevated shells; major diameter less than 170(30) ; olive- 

 brown with light, peripheral stripe usually bordered by dark 

 band below. 



V. Major diameter index around 160. 



