44 THE NAUTILUS. 
Subulina octona (Chem.). A mile or more back of the vil- 
lage, by a well-traveled path. 
Pseudosubulina martensiana Pilsbry. 
Leptinaria guatemalensis Crosse and Fischer. 
Leptinaria livingstonensis Hinkley. 
Spiraxis livingstonensis Pilsbry. 
Spiraaxis longior Pilsbry. 
Brachypodella subtilis pulchella (Martens). Of the same 
color as the limestone on which they live, they are inconspic- 
uous. The shell hangs parallel with the face of the rock or 
stands out at an angle. 
Bothriopupa breviconus Pilsbry. One specimen. 
Cecilioides consobrina veracruzensis (C. & F.). 
Helicina amoena Pfr. 
Helicina flavida Mke. or H. trossula Morelet. 
Helicina coccinostoma Morelet. 
Cistula radiosum (Morelet). Found on limestone and dead 
wood, sometimes hanging by a thread. Some were in motion, 
but the larger part were attached to the rock or wood of 
similar color. 
Chondropoma rubicundum (Morelet). Situated above fal- 
len trees, base of rocks and under old banana leaves. Some 
variation in size. 
Pachychilus indiorum (Morelet). Cavech river. This 
species prefers shallow water. The finest specimens were on 
a hillside in thick timber where the water spreads out thin 
over a flat rock surface marked with irregular seams and de- 
pressions; many of these mollusks were barely wet, hundreds 
of the shells with a mottled and polished surface showing 
through a thin film of water made an attractive sight to any 
one interested in the beautiful of Nature. 
Pachychilus corvinus (Morelet). This mollusk prefers 
more water than the above. At this locality there is more 
color variation, from a dark purple to the almost white form 
known as variety lutescens. 
Pachychilus largilierti (Philippi). In a small stream, al- 
most dry, they had collected by the thousands, in small pools, 
many dead and the rest dying. Nearly all were immature. 
A few of the largest were taken. 
