224 PSEUDOTROCHUS. 



France, v, p. 68. PETIT, Journ. de ConchyL, iii, 1851, p. 

 267, pi. 8, f. 8. Perideris solimana PFR., Monogr., iv, 593; 

 vi, 204; viii, 266. SHUTTL., Notitiae, i, p. 78. KOBELT, C. 

 Cab., p. 32, pi. 10, f. 2, 3; pi. 16, f. 4, 5. v. MARTENS, 

 Monatsberichte der K. Preuss. Akad. Wissensch. zu Berlin 

 for 1876, p. 259, pi. 3, f. 3 (living animals) ; Sitzungsber. 

 Ges. Naturf. Freunde Berlin, Feb., 1891, p. 31. D'AILLY, 

 Biliang, etc., p. 82. Bulimus suturalis PFR., Proc. Zool. 

 Soc., 1851, p. 255. Bulimus sillimani PFR V ConchyL Cab., 

 p. 88, pi. 31, f. 7, 8. Achatina sillimani DESH., in Fer., 

 Hist., ii, p. 152, pi. 137, f. 14, 15. 



This species is well distinguished by its broadly conic 

 shape. Only four out of fifteen specimens before me have 

 the two bands on the last whorl, but the columella is dark 

 and the sutural margin is opaque-white in all. The figures 

 represent the apex as more acute and less teat-like than it 

 really is. Von Martens has figured the living animal of a 

 specimen from Victoria, from a drawing by Dr. R. Buch- 

 holz. The neck and tentacles are dark green; sides of the 

 fore part, and the entire hind part of the foot are pale gray, 

 with numerous small white flecks. 



Dusen found it on tree trunks. In an individual 30 mm. 

 long, d'Ailly found 14 eggs, measuring 5x3.75 mm., pol- 

 ished and of a glossy whiteness. 



4. P. TENUIS (Gray). 



Shell ovate, subturrite, very thin, white pellucid, covered 

 with a thin, glabrous-yellow periostracum ; spire conic, the 

 apex obtuse, somewhat produced; whorls convex, the last 

 very obsoletely carinate, purplish-brown anteriorly; colu- 

 mella thin and rather straight anteriorly. Axis 15, diam. 

 9 lines (Gray). 



Africa? (Gray). 



Lignus tennis GRAY, Proc. Zool. Soc., 1834, p. 66. Acha- 

 tina tennis Gray, PFR., Monogr., ii, 247; iii, 480. Perideris 

 tennis Gray, PFR., Monogr., iv, 592; vi, 204. SHUTTL., 

 Notitiae, p. 77. 



" This shell is in shape most like the young of Hel. flam- 



