168 POIRETIA. 



this statement, Kobelt believes it referable to var. dilatata. 

 It was based on a young shell, the adult form of which is de- 

 scribed above. The embryonic shell differs from all Italian 

 forms I have seen, and indicates, in my opinion, a well-marked 

 subspecies, probably confined to Corfu. 



le. Var. MINGRELICA (Boettger). Vol. I, p. 42. 



Transcaucasia. Similar to P. cornea in shape but with a 

 smaller apex, and with sculpture of much coarser rib-striae, 

 the intervals nearly double the width of the riblets, giving 

 place on the last whorl to coarse wrinkle-striation. Length 

 34 to 36, diain. 10.5 to 11, aperture 15 to 16 mm., whorls 7. 

 (Glandina algira var. mingrelica Bttg., Jahrb. d. Malak. Ges., 

 viii, 1881, p. 170, pi. 7, f. 1). 



I have not seen this form. Its rank and position depend 

 upon the sculpture of the embryonic shell, which has not been 

 described. 



2. P. CORNEA (Brumati). PI. 31, figs. 8, 9. 



Shell thin, very slender and long, lanceolate-fusiform, blue- 

 white under a very thin, fugitive olive-yellowish cuticle. The 

 embryonic shell consists of from slightly over 2 whorls to 

 2 1 /-}. The first whorl is smooth, except that on its last half 

 fine, short strige appear below the suture. These gradually 

 become longer, and on the latter part of the last embryonic 

 whorl part of the striae weakly reach to the suture below. 

 The subsutural thread or cord is distinct, but less prominent, 

 than in P. algira. The post-nepionic whorls of the spire are 

 sculptured with strong, regular rib-stria?, but these weaken 

 and become irregular on the last whorl or half whorl, which 

 is irregularly wrinkled. The suture is irregularly crenulate, 

 and very oblique, but its descent is nearly regular, not much 

 more oblique at the last half whorl. The columella is rather 

 strongly concave near the base, which is abruptly truncate. 

 Length 36.5, diarn. 11, aperture 17.5 mm. ; whorls 

 Length 33.5, diam. 10.5, aperture 16 mm. ; whorls 

 Dalmatia and adjacent territories on the northeastern 



