358 APPENDIX GASTROCOPTA. 



Dr. Ball's new name [PupUla] reibischi, being based upon 

 "the Galapagos species," becomes, I presume, a synonym of 

 Gastrocopta munita (Reibisch) ; or, if it is held to be based 

 upon Reibisch 's pi. 2, fig. 11, it will be a synonym of Gastro- 

 copta wolfii (Miller), of Guayaquil. 



Pupa wolfii has been reported from the Galapagos only by 

 Dr. Dall, and all of his specimens, which he courteously per- 

 mitted me to examine, are P. munita of Reibisch. There is at 

 present no evidence that P. wolfii exists on the Galapagos. 

 Having carefully compared long series of munita, from sev- 

 eral islands of the Galapagos group, with Guayaquil Province 

 wolfii, I found them constantly distinct. See last paragraph 

 on p. 96 of this volume. 



Dr. Dall 's note was doubtless written before he had seen the 

 account in this volume, pp. 95, 96, published Dec. 18, 1916, 

 where the status of the species involved is sufficiently exposed. 

 I fear also that there may have been some ambiguity in my 

 letter to him on the subject in which case the error here 

 corrected must have been due to my own vagueness. Certainly 

 I intended to convey the conclusions stated on pp. 94-99, which 

 had just then been written. 



G. wolfii sometimes has a very low swelling behind the outer 

 lip, though typically there is none. 



Page 120. The following species is to be inserted after G. 

 pleimesi: 



65%. GASTROCOPTA HAGGENMACHERI (Jick.). 



Shell rimate, cylindric-ovate, white, glossy, diaphanous, 

 under the lens obsoletely striated longitudinally, covered with 

 dirt; spire somewhat tapering, the apex obtuse. Whorls 5, 

 slightly convex, separated by a rather impressed suture, the 

 last equal to one-third of the length, a little compressed at 

 base, with a bifid sulcus. Aperture rounded, 6-plicate : a fold 

 on the parietal wall divided by a deep sinus, the anterior part 

 forming a minute denticle ; 2 columellar folds, the lower one 

 situated on the angle between columellar and basal margins; 

 3 palatal folds, the upper one punctiform, the middle and 



