HAAS: ABIDA AND CH0NDR1NA. 313 



(1). Length 5.5 to 7, diam. 2.5 to 3.25 mm.; 6^4 to 7*4 

 whorls; the shell finely rib-striate. 



La Censola, Monte Caro near Tortosa, Prov. Tarragona, 

 Dr. P. Font Quer leg., 11 examples: 2-2-0 (2) ; 2-2-1 (2) ; 

 2-2-2 (7). 



Prov. Cuenca, 14 examples, all 2-2-3. Length 7, diam. 3 

 mm. Shell finely hair-striate. 



The 80 specimens examined divide among the following 

 eight tooth-combinations : 



No. of 



Names. 



r Pupa 



dertosensis Bofill. 



Little is to be added to Bofill 's good diagnosis, repeated by 

 Pilsbry (Man. XXV, 36). The apex is smooth, the following 

 3-4 whorls always showing a pronounced hair-striation, which 

 on the latest whorls generally becomes weaker ; only the thick- 

 shelled specimens from the Triassic limestone of Camposines 

 are distinctly rib-striate throughout. The shell in these last- 

 named specimens is opaque, while in all others examined it 

 is translucent horn-brown. The base of the last whorl lacks a 

 distinct crest ; only a light lateral compression is present. 

 The angular lamella is united with the spiral lamella. 



My specimens from the Sierra de Cardo are Bofill 's cotypes, 

 but only one of them has the combination 2-2-2 attributed to 

 the species, and the other combination said to occur, 2-2-3 is 

 not represented at all. On pi. 27, figs. 10, 11, I figure one of 

 this lot with the combination 2-2-1. Fig. 12 of the same plate 

 illustrates an example with 2-2-2 teeth, from the Sierra de 

 Cardo, opposite Montsia on the south side of the Ebro. 



In a single specimen from the Mola de Falset there was a 



