68 GASTROCOPTA. 



lamella; infrapalatal, lower palatal, interpalatal and supra- 

 palatal folds. This cannot be correct; he apparently means 

 that there is a well united but bifid an^o-parietal lamella, a 

 columellar lamella, basal, upper and lower palatal and inter- 

 palatal folds; or according to Sterki's formula (Proe. U. S. 

 Nat. Mus. 1888, pi. 42, fig. 5) he should have written 

 1ABCD4E. 



I have already (1918), explained that Ball's original 

 Pupilla reihischi of 1917 was based upon an error ; it was not 

 described, but the new name was proposed for '' Pupa wolfii " 

 as figured by Eeibisch. This being the case, the name becomes 

 a synonym of P. wolfii. The type of P. reihischi Ball, 1917, 

 is the specimen figured by Reibisch on his plate 2, fig. 11, 

 Abhandl. Nat. Ges. Isis, 1892 (see Man. Conch. XXIV, pp. 

 95, 357), which appears to be what Ball referred to in his 

 original proposition of the name. This figure represents the 

 Ecuadorian G. wolfii, which is hardly distinguishable from G. 

 servilis (Gld.). 



The Ball and Ochsner paper of 1928 was published after 

 the death of both authors, and was thus not subject to their 

 final revision. 



One of the original lot of reihischi, 1928, kindly given me 

 by Br. Ball, is figured, pi. 17, figs. 5, 6. Length 2.4 mm., 

 diam. 1 mm. The color is between cinnamon and cinnamon- 

 bro'WTi on the last whorl, paler above, the lip and teeth light 

 russet vinaceous. The teeth represented are: a bifid angulo- 

 parietal lamella, a strong, simple and horizontal columellar, 

 and upper and lower palatal and basal folds. This specimen 

 has no interpalatal fold, such as Ball described ; but this small 

 fold is often lacking in P. munita. There is no swelling or 

 crest behind the outer lip. In any large lot of G. munita this 

 crest may be either present, weak or wanting. 



I collected many specimens at Tagus Cove in 1929, the lot 

 including typical G. munita distinguished by its lighter corne- 

 ous (brownish or buffy gray) color, and the presence of an 

 infraparietal nodule and more or less callus under the colum- 

 ellar lamella. With them are darker, more cylindric shells 

 referable to the present race; but there are specimens of 



