236 LYROPUPA. 



from lymta, in our opinion. It agrees in shape with the 

 shorter examples of the Gould series. The only difference is 

 that the lower palatal fold has a rather deep depression be- 

 tween the inner tubercle and the rather high outer portion; 

 but this is a variable feature in the type lot of lyrata. Two 

 paratypes of magdalenae are drawn in pi. 19, figs. 1, 2. The 

 paratypes have 17 to 19 costae on the last whorl, with the inter- 

 stices minutely, spirally, deciduously striate ; just back of the 

 aperture are two shallow sulci which further back unite, form- 

 ing a rather broad sulcus extending for nearly half the length 

 of the whorl ; the embryonic whorls, in immature specimens, 

 are minutely granulose, the granules arranged in transverse 

 wrinkles; at about the middle of the second whorl the costae 

 suddenly appear. The angular lamella is strong, high, thin 

 and long and terminates at the margin of the aperture; the 

 parietal lamella is more deeply seated, strong, slightly bent 

 outwards and is nearly half a whorl in length ; the columellar 

 lamella is strong, lunate, axially seated on the columella and 

 extending to the base ; the lower palatal is rather short, very 

 deeply seated, corresponding to the lower outer sulcus ; upper 

 palatal long, elevated in back, low in front, terminating almost 

 on the margin of the peristome ; with the angular it forms a 

 well-defined sinulus; there is no indication of a basal fold. 

 There are from 5 to 5*4 whorls in adult specimens. Ancey's 

 paratypes measure : Length 2.56 to 2.7, diam. 1.56 to 1.65, aper- 

 ture 0.95 to 1.0 mm. 



L. carbonaria Ancey appears, from the entire type lot (now 

 no. 18752 Bishop Museum), to be synonymous with lyrata. A 

 paratype is drawn in pi. 19, fig. 3. It is somewhat more 

 elongate than the Palama magdalenae, representing the longer 

 phase of variation, as that does the shorter. It is similar to 

 Gould's type specimen of Urata, which probably came from 

 the same valley, Nuuanu. The palatal folds (pi. 19, fig. 6) 

 are exactly as in some specimens of lyrata though the lower 

 palatal is shorter than in the lyrata selected for the figure. 



la. Lyropupa lyrata nncifera C. & P., n. subsp. PL 19, figs. 

 12, 13. The shell is slightly smaller than that of the typical 

 form, and more cylindrical in outline, with 17 to 18 strong, 

 hardly flexuous costae. In its fossil state, the fine deciduous 

 spiral striae are absent. There is a light-colored peripheral 

 zone on the last whorl between tawny sutural and basal zones. 

 Whorls 5, convex and separated by a deep suture; the last 

 tapering towards the base. Parietal lamella more deeply 



