GASTROGOPTA. 67 



In a low, moist spot on the trail behind Villamil, a place not 

 covered by the last lava flow, brownish, partly more cylindric 

 shells were found, one of the smallest measuring 2.15x0.95 mm. 



At Tagus Cove, Albemarle, I found "corneous", that is, 

 pale buffy gray examples (the typical color), of stout contour 

 with a white lip, such as I figured, vol. 24, pi. 19, fig. 1 (figure 

 too brown in the colored copies), together with more cylindric, 

 corneous and decidedly cylindric brown examples, all living 

 together. While a majority of the examples can be assorted 

 into two groups by color and shape, many intermediate shells 

 occur, so that the distinction of " Pupilla reihischi " Dall 

 appears to me impracticable. The data upon this supposed 

 species are given below. 



Pupilla reihischi Dall, 1928, not 1917. — " Shell subcylin- 

 dric, blunt, five-whorled, of a dark brown color, whorls moder- 

 ately inflated, suture distinct; aperture with a wide reflected 

 margin which in well developed individuals is often of a 

 reddish color ; pillar lip reflected over a well marked umbilical 

 chink; teeth after Sterki's dental formula but substituting 

 figures for dots after his numeration : A B 3 D 4 5. The 

 parietal tooth (A) when fully developed is bifid anteriorly 

 and somewhat produced behind into the whorl ; the other teeth 

 appear short, and none of them are white. Length of shell 

 2.5 mm.; diameter 1.0 mm. {Dall). 



" This species is easily distinguished from both P. mimita 

 and P. clausa by its darker color. It is more slender and 

 cylindrical than the former and larger than the latter. It has 

 been submitted to Dr. Sterki who pronounces it distinct from 

 munita. The accessory lamellse are rather deeply ensconced 

 in the aperture. The species seems to be considerably rarer 

 than P. munita. P. clausa, by the results of collections made, 

 is rare " (Dall). 



Galapagos: Albemarle Island, near Tagus Cove, under 

 rotten wood at a height of 250 to 300 feet, mixed -with P. 

 munita (W. H. Ochsner). 



Pupilla (Gastrocopia) reihischi Dall, in Dall and Ochsner, 

 Proe. California Acad. Sci. (4), XVII, June 22, 1928, p. 174. 

 Not Pupilla reihischi Dall, Proc. Biol. Soc. Washington XXX, 

 1917, p. 10; cf. Pilsbry, Man. of Conch. XXIV, 1918, p. 357. 



The tooth formula (A B 3 D 4 5) used in the above descrip- 

 tion calls for the following teeth : parietal lamella, columellar 



