214 RUMINA. 



he did not use it in a 'binomial or trinomial sense, and it is 

 preoccupied. 



(1) Var. maxima Bgt., pi. 53, figs. 65, 66, very large and 

 eylindric, the spiral sculpture very distinct, length 45 to 60 

 mm. It is widely distributed in the province of Oran. 



(2) Var. lanceolata Bgt., pi. 53, fig. 69, is large, lanceolate, 

 from La Calle, near Algiers, Batna, etc. 



(3) Var. ventricosa Bgt., pi. 53, figs. 64, 68, ventricose at 

 base, the spire acuminate. Environs of Oran, in the moun- 

 tains (fig. 68) ; Sidi-bel- Abbes (fig. 64). 



(4) Var. cornea Bgt., of a very dark corneous tint. Mo- 

 etaghanem, Boghar, etc. 



(5) Var. flammulata Bgt., pi. 53, figs. 71, 72, whitish with 

 corneous flammules. Oran, Bougie. 



(6) Var. paivce Lowe. Livid or purplish brown or fawn- 

 icolor, also within the mouth ; thick, strong and heavy ; whole 

 surface equably and finely decussated with spiral lines cross- 

 ing the close, distinct and even striae of growth, which are not 

 conspicuously stronger at the sutures -as they are in typical 

 decollata. 39-44x16 mm., apert. 13-14 mm. long. Rabat, 

 Morocco (Lowe). R. decollata var. maura Crosse (J. de C., 

 1873, 137), pi. 53, fig. 60, 50 mm. long, is identical. Kobelt 

 also figures specimens 1 referable to maura from Nemours, 

 western Algeria (pi. 53, fig. 61), and the var. fusca Pallary 

 (J. de C., xlvi, 1898, p. 123) from Tetuan, etc., is probably 

 allied or identical. 



(7) Var. claviformis Kobelt, pi. 53, fig. 62, is a further 

 development of paiva, from which it differs in the club-like 

 shape. It is from Nemours. 



(8) Var. decussata Lowe. Shell similar to typical decollata 

 in color and appearance, but it is in the average more robust, 

 with a well-developed parietal callous, the surface more closely 

 and deeply decussated, like the African forms. Rome, Malta, 

 southern Spain, Canary Is. This race, defined by Lowe in 

 1861, is generally distinguishable. The specimens from Rome 

 may be descendants of Carthaginian examples, introduced 

 about 2000 years ago. Those of Malta and southern Spain 

 probably indicate former geographic relations with Africa. 



