BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 22. AFD. IV, N:0 2. 109 



Pseudoglessula involuta (GtOULD). 



1843 Achatina iuvoluta Gould in Proc. Bosl. Soc; Nov., p. 158. 



1846 >■' Fraseri Pfeiffek Symbolœ III p. 90. 



1847 ;. :;. Philippi Abbild. II p. 216, Acli. T. 1, Fig. 6. 



1848 > >' Pfkiffer Mon. Hel. II p. 263. 



1849 : > Reuve Conch. icon. Vol. V PL 16, N:o 71. 

 » -.y involuta » >^ » » » » 17, » 88. 



1850 Subulina Fraseri Albers Heliceen p. 195. 



1853 Achalina involuta Pfeiffer Mon. Hel. III p. 500. 

 1855 Subulina Fraseri Adams H. et A. Gen. of rec. Moll. Vol. II 



p. 110. 

 » Achatina involuta Pfeiffer in Cbemn. éd. Kuster p. 343, 

 T. 37, Fig. 21, 22. 

 1860 Glandina » (Varicella) Alders Heliceen éd. v. Martens 



p. 31. 

 1868 Acbatina ■ Morelet Voy. Wehvitscli p. 80. 



1881 Stenogyra (Subulina) Pfeiffer Nonienclator p. 325. 



1893 Subulina v. Martens Mitllieil. aus d. d. Scbutzgeb. 



Band VI, Heft. 3. 



Testa turrito-subulata, apice cylindrico, obtusiusciilo, sub- 

 papillari, irregiilariter striata, polita, albido-virescens, siib 

 epidermide corneo-brnnnea, hic illic satiiratiiis strigata, in 

 parie aperturali ssepins detereiida, stib lente vix perspicne 

 spiraliter densissime striata; spira apicem versus snbconcava, 

 ceteriim snbcylindrica; anfractus 13, primus et secnndus snl)- 

 globosi, levés, sutura regulariter et distanter denticulato- 

 crenulata discreti, sequentes plano-convexi ad suturam irregu- 

 lariter plicato-crennlati, ultimus ^ '4 longitudinis non requans, 

 inferne subangulatus, angulo saturatiore; columella arcuata, 

 abrupte truncata, albo-marginata ; apertura subtetragono- 

 semiovalis; peristoma tenue, rectum, simplex. 



Long. 31 — 32\/2; diam. 6; apert. long. 6, lat. 3^2 mill. 



Ova 3 mill. longa, 2 mill. lata. 



Habitat in Camerunia: Bonge (D., S.), Itoki (S.). 



(Cap Palmas; in ripis fluvii Nun Afr. Occ. 



(Fraser); 



Sierra Leone: prope Freetown (Welwitsch); 



Togoland: Bismarckburg (Bûttner).) 



Specimina 49 exstant, omnia viventia collecta. 



