682 KANSAS CITY REVIEW OF SCIENCE. 



specimens were uniformly of five and one-half whirls, while F. texasiana varied 

 from five to five and one-half. 



4. Polygyra dorfenilltana, Lea. But a single specimen was found. At 

 Denison it is common, and the other two here found of the same sub-genus are 

 not found there. 



5. Helicina orbiculata, Say, was apparently as much at home on the bluffs as 

 on the bottoms. From one to three inches in the ground under leaves and brush, 



• and in some cases under logs and stones, they were found hibernating. The 

 shells were larger than those from Denison or Houston, but there were fewer 

 colored shells than at the former place. 



6. Bulimulus alkrnatus Say, or that variety which has been described as a 

 separate species under the name of B. Schiedeanus, Pfr., and its variety moore- 

 anus, W. G. Binney, were found at all places with the last. A few were under 

 logs, either adhering to them, or buried in the soil beneath, but they were more 

 plenty under leaves and brush, lying almost at the surface of the ground with 

 the opening upwards. The two last species were very plenty, and they with M. 

 rocmeri, P. texasiana and various species of Unios were found fossil in the post- 

 pliocene formation. 



7. Strobila labyrinthica , Say. 



8. Hyalina minuscula, Binney. 

 p. Pupa fallax, Say. 



10. Pupa coniracta. Say. 

 //. Pupa rupicola, Say. 



These five specimens were found very sparingly in the river bottom. Of P. 

 fallax, I obtained but a single specimen, and that a dead one. 



12. Hyalina indentata, Say, was found in small numbers with the latter, and 

 also on the bluffs. They were six mm. in diameter. 



13. Succinea grosvenorii, Lea, were obtained in considerable numbers 

 around a pond and at other damp places, under sticks pr weeds, and in some 

 cases crawling around. 



The search for land shells was pretty thorough, and the absence of even 

 dead shells of any other species, shows that the list would not be much extended 

 by both summer and winter collecting. 



In the case of fresh water shells the search was not as satisfactory or com- 

 plete. Lynincza and Physa were still active; though I found dead Planorbis in 

 various places. I did not get any living ones. 



14. Planorbis trivolois, Say. 

 75. Planorbis parvus, Say. 



16. Sphcerium partumeium, Say, 

 These three were found in one pond, but were all dead. 



//. A few miles from the town on the edge of the prairie, I noticed a small 

 stream of water coming from a spring, and on examination I found a small globose 

 Lymncea of about five whirls, and only four mm. in length. From the number 

 of whirls and the solidity of the shell, I took it to be a mature one, but a few 



