Cooke 
Hawauan Zonitidae and Succineidae 269 
closely with specimens from Maui and Hawaii. As _ stated by 
Sykes, specimens have not been found on Kauai by any of the 
later collectors. Gould’s diameter, 1/3 in. (8.3 mm.) (1/3 X I/II 
‘in.) is probably erroneous, as his figure (natural size) measures 
4.8 mm. in diameter. 
Owing to the small amount of available material from the 
island of Hawaii it seems best that the Hawaii form should be 
included at present with Gould’s species from Maui. Some of the 
specimens are slightly larger than any that I have known to be 
found on Maui. 
The size of the specimens from Hawaii as compared with those 
from Maui is shown in the following table: 
Max. Min. : Number Bishop 
: 5 ; Altitude 
Locality diam. diam. of Mus. 
mm. = 
mm. mm. whorls No. 
UMIGNCULS) eed se ier Aa ee oe 5.2 BG 3.0 3 58473 
(MLE NTI ee ne 4.6 3.2 2.6 3 58473 
CLEARS Oe ae 6.1 3-9 Bu 3% 58472 
The embryonic whorls of specimens from Maui and Hawaii are 
minutely punctate, as in the American and European species of this genus, 
the punctation being arranged in spiral rows. Fresh specimens are trans- 
parent chartreuse-yellow according to Ridgway’s color nomenclature. ‘The 
only material available for dissection was a very much contracted alcoholic 
specimen, an animal collected by Forbes on the island of Hawaii. Unfortu- 
nately the tip of the tail had been broken off and the presence of a pore 
could not be determined. The sides of the foot were dark slate-colored, the 
sole slightly lighter in color; the central area, about one-third the diameter 
of the foot, being much lighter. The dorsal and shell-lobes were very much 
contracted and intensely pigmented. The right shell-lobe is long and nar- 
row and extends beyond the pulmonary orifice. The right dorsal lobe is 
short, almost triangular, and very thick. The left shell-lobe is short. The 
anterior left dorsal lobe is short and triangular in outline; the posterior 
left dorsal is broad in front, long and narrow behind. The mantle is light 
yellowish flesh-colored, indistinctly and minutely stippled for a short dis- 
tance above the collar. 
The right tentacle retractor does not pass between the oviduct and 
penis but between the genitalia and buccal mass and under the main nerve 
leading to the genitalia. This same arrangement was found in specimens of 
V. alaskana Dall (A. N. S. P. 107017). 
Lo] 
