312 HAAS: ABIDA AND CHONDRINA. 



The 15 examples of the original series all measure: length 

 6, diam. 2.5 mm.; the 9 from Potes near Santander, length 

 5.5 to 6.5, diam. 2.5 mm. The records of lusitanica from As- 

 turia by earlier authors are apparently referable to C. I. vas- 

 conica, which appears to replace lusitanica in the Asturian 

 and Basque Provinces. 



Chondrina dertosensis (Bofill). PI. 27, figs. 10, 11, 12. 



Pupa dertosensis Bofill, Bull. Soc. Malac. France, III, 1886, 

 p. 162. — Westerlund, Fauna Pal. Binnenconch., p. 103. — 

 Bofill, Ass. Exc. Cat., XI, 1890, p. 200. — Chondrina derto- 

 sensis Pilsbry, Manual, XXV, p. 36. — Haas, Butll. Inst. Catal. 

 Hist. Nat, 1924, p. 55, pi. 1, f. 6a, b. 



Pupa (Modicella) avenacea (in part), Bofill and Haas, 

 Butll. Inst. Cat. Hist. Nat. Barcelona, XIX, 1919, pp. 129-130. 



Pupa (Modicella) aff. jumillensis Haas, Butll. Inst. Cat. 

 Hist. Nat. Barcelona, XVIII, 1918, p. 72. 



Pupa (Modicella) avenacea dertosensis Haas, torn, cit., pp. 

 141, 142. 



Chondrina dertosensis (Bof.) Haas, Butlleti Inst. Catalana 

 d'Hist. Nat., 1924, p. 55, pi. 2, f. 6a, b. 



After we (Bofill and Haas) had considered this species to 

 be a form of C. avenacea, I find myself compelled to change 

 my mind and treat it as a good species of the group of C. lusi- 

 tanica. It is much more variable in size and teeth than Bofill 

 indicated, as will be seen in the following list of localities, 

 arranged from north to south. Number of specimens is en- 

 closed in parenthesis following the tooth formula. 



Mt. Montsant, Prov. Tarragona, Dr. P. Font Quer leg., 10 

 examples: 2-1-2 (1) ; 2-2-0 (1) ; 2-2-2 (8). Length 5.5 to 7, 

 diam. 2.5 to 3 mm. ; 7 to 8 whorls. 



Mt. Mola de Falset, Prov. Tarragona, Dr. P. Font Quer 

 leg., 9 examples: 2-2-4 (8) ; 3-2-4 (1). Length 5 to 6.75, 

 diam. 2.25 to 2.5 mm. ; 7-8 whorls. 



Composines near Mora, Prov. Tarragona, on Triassic lime- 

 stone, F. Haas leg., 2 examples, 2-2-2. Length 6.5, diam. 3 

 mm. Shell strongly rib-striate, thick. 



Sierra de Cardo, Prov. Tarragona, A. Bofill leg., 29 ex- 

 amples, cotypes: 2-1-0 (14) ; 2-2-0 (12) ; 2-2-1 (2) ; 2-2-2 



