A New Variety of Partulina Hornen 
By A. GouvEIa 
Partulina horneri, (Baldwin) var. kapuana, n. var. 
Jag and: Ac GOUY EA 
PLATE XV. 
Shell sinistral, translucent, apex acute, spire slightly concave, surface 
shining, the first two whorls nearly uniformly light brown in adult specimens, 
3rd, 4th, 5th and 6th, brown, obliquely marked with white zigzag lines, last 
whorl lighter colored than the upper whorls, gradually becoming lighter and 
nearly pure white just in back of the lip and furnished with a white band 
just below the periphery, the upper margin of the band is bordered by a 
slightly darker shade of brown; whorls 7, first five slightly convex, the last 
very much inflated, forming a little more than half of the shell, rounded at 
the periphery; suture simple and slightly impressed; columella simple, white, 
nearly straight, slightly convex below, broader above and covering a deep 
circular umbilicus; aperture large, semiovate, white within; margin of the 
lip thin, edged on the outside with a very narrow dark line, slightly thickened 
within. 
Length 24 mm. diam. (diagonal) 14 mm.; aperture, length I2 mm., 
diam. 9.3 mm. 
Embryo: light brown with a narrow dark brown peripheral band, 
bordered on both sides by a white band and with broad indistinct irregular 
stripes. There were about four to each pregnant specimen. 
Habitat: Waialohe, Kapua, South Kona, Hawaii: About one-half mile 
above Government Road; on Pua trees, very scarce. (A. Gouveia.) 
Holotype: B. P. B. Museum, No. 49227, paratypes, Academy of Natural 
Science, Phil., and Gouveia Collection, Nos. 338, 404—3-6-7-8 and 429. 
This form is provisionally placed as a variety of P. horneri 
although their habitats are widely separated. P. h. kapuana agrees 
with P. horneri in texture of the surface. It differs, however, in its 
narrower form, more rounded periphery and darker juvenile whorls. 
From P. confusa it differs in its smoother surface, more regularly 
coiled spire, and lighter and more distinct color pattern. 
[3] G53) 
