92 THE NAUTILUS. 



or without rays, rays obscured. Substance of the shell thick and 

 solid ; beaks small, with a few rather coarse, concentric undulations ; 

 ligament rather long and dark brown ; epidermis reddish-brown ; 

 growth lines rather coarse and slightly raised ; umbonial slope 

 obtusely angular; posterior slope angular, with a raised ridge 

 from beaks to posterior end, slightly biaugulated ; cardinal teeth 

 large, erect, compressed and corrugate ; lateral teeth short and 

 slightly curved; anterior cicatrices distinct and deep; posterior 

 cicatrices distinct; cavity of the shell deep; cavity of the beaks 

 moderately deep ; nacre white or rose-color; soft parts unknown. 



Habitat: Village Creek, Hardin Co., Texas; Sabiue River, 

 Texas. 



This shell seems to be between U. beadleianus Lea and U. ch'n-ka- 

 sawheiisis Lea, and bears some resemblance to U. cJinnii Lea. It is 

 more triangular than U. beadleicmns, and more solid, with a differ- 

 ent epidermis and teeth ; it is much more inflated and more angular 

 posteriorly than chickasawhensis, and it differs in being less heavy 

 in the beaks and in the outline of the shell. 



One specimen was received many years ago from Mr. A. G. 

 Wetherby, from Village Creek, Hardin Co., Texas, and many speci- 

 mens, lately, from Mr. H. G. Askew, of Austin, Texas, who is an 

 earnest worker in this family of shells, and in whose honor I name 

 this shell. 



ISAAC LEA DEPARTMENT. 



[Conducted in the interest of the Isaac Lea Conchological Chapter of Hie Aj-iis.siz Associa- 

 tion by its General Secretary, Mrs. M. Burton Williamson.] 



Kindly bear in mind the fact that this is the month when our re- 

 ports are due, also annual dues and election of officers, as noted in 

 the November issue of THE NAUTILUS. The tardiness of some of 

 our members in reporting last year delayed the issue of our volume 

 of Transactions. Some of our members are always prompt in re- 

 porting, and the General Secretary appreciates their readiness to 

 conform with the rules of the Cha/iti /. 



[From the report of Miss Nelson. From the Transactions of the Isaac Lea Conch- 

 ological Chapter for 1895.] 



My interest in shells dates as far back as I can remember, when 

 my brother and I played on the banks of the stream at our old 



