124 THE NAUTILUS. 



are enviroumental rather than geograpliical ; and following in the 

 general line or trend of this paper may be j)re.sented on another 

 occasion. 



NOTE ON GONIOBASIS CATENARIA SAY. 



BY H. A. PILSBRY, 



Having occasion recently to name some Florida Goniobases, the 

 writer examined thoroughly the species described from that State. 

 The characteristic type is G. catenaria Say. It is a turrited shell, 

 blackish-brown or olive-brown, having numerous small folds extend- 

 ing from the suture to the angular periphery, crossed by two or 

 three spiral threads, which form beads where they cross the folds; 

 the periphery is more or less keeled and tuberculate; below it are 

 a variable number (4-7) of spiral raised threads. The apex is 

 eroded. 



The sculpture is sometimes nearly obsolete, as in a blackish form 

 collected in Marion Co. by Mr. G. W. Webster, and also sent me 

 by Mr. Berlin H. Wright ; or it may be very sharp and clear-cut, as 

 in a beautiful form from Alexander Spring Co. The following syn- 

 onymy I regard as unquestionably established : 



G. catenaria Say, 1822. G. Etowahensis Lea, 1861. 



G. sublirata Conr., 1850. G. papUlosa Anth., 1861 



G. Floridensis Rve., 1860. G. Downieana Lea, 1862. 



Of the names given below, I have seen neither G. Bento)iie7tsis or 

 G. Couperil, but they seem to have very slight differential characters. 

 G. HallenhecM and G. Boykiniana are practically the same thing, as 

 the suite before me shows. They differ from the catenaria in nothing 

 but size. These four names may therefore be ranked as probable 

 synonyms, or at best, species on probation : 



G. Boykiniayia Lea, 1840,-|- G. Hallenbeckii Lea, 1862. 



G. Bentoniensis Lea, 1862. 



G. Couperii Lea, 1862. 



All of which is respectfully submitted. Notes on any of these 

 forms from collectors will be very acceptable to the wiiter. 



The specimens studied are in the general collection of the Acade- 

 my of Sciences and the collection of the American Association of 

 Conchologists. 



