Z PROCEEDINGS OF THE NATIONAL MUSEUM vol.82 



into minute granules by impressed spiral lines, after the smooth 

 (worn) initial whorl; on the penultimate whorl this sculpture be- 

 comes weaker, and on the last whorl it is only faintly visible under 

 the lens as spiral series of long, weak granules in some places. There 

 is none of the microscopic granulation which covers the surface of A. 

 marginata. In the last two and a half whorls the suture is rather 

 broadly marginate, the margin more or less plicatulate. The ovate 

 aperture is bluish within. Outer and basal margins of peristome 

 acute, ver}^ slightly expanded. Columella white; much less concave 

 than in A. marginata. 



Length, 94 mm ; diameter, 52.7 mm ; aperture, 55 mm long ; 6% 

 whorls. 



Remarks. — This species is less inflated than A. marginata^ without 

 the minute granulation of the last whorl so characteristic of that 

 species, and with more sharply contrasting dark streaks, which 

 cover less of the surface. The columella, while somewhat variable 

 as usual in achatinas, is less twisted spirally. It has some super- 

 ficial resemblance to Achatina weynsi Dautz. 



Six specimens were collected at the type locality. A much dis- 

 colored egg, which fell out of one of them, has a minutely roughened 

 surface and measures 12 by 16 mm. 



Agouma,^ where these shells were taken, is about 100 kilometers 

 inland from Fernand Vas and the same distance south of Lam- 

 barene. It is somewhat higher than the latter, between 200 and 300 

 meters elevation, in forest, according to the French colonial atlas. 



ARCHACHATINA GABOONENSIS LAMBARENENSIS, new variety 

 Plate 2, Figure 3 



A much larger form or race from Lambarene, on the Ogowe 

 (Ogooue) River, Gaboon Colony, is in the collection of the Academy 

 of Natural Sciences of Philadelphia, No. 159294, collected by Mrs. L. 

 Russell. Length, 120 mm; diameter, 70 mm; 6% whorls. Other 

 characters as in the type lot. 



ARCHACHATINA SPECTACULUM, new species 



Plate 2, Figure 4 



Specimens. — Type : U.S.N.M. No. 406386, received from J. Wilson 

 from West Africa. Paratype : No. 20220, " Gambia," Totten. 



Descnftion. — The solid, ovate-conic shell is between olive-ocher 

 and honey-yellow, with straight, widely spaced, brown and light 

 brownish-olive streaks, the spire whitish to pale brown with darker 

 brown irregular streaks; apex whitish. The whorls are rather 



^ " Ogouma " on the labels, but I presume Agouma was intended. I do not know the 

 significance of " Rem Nkami." 



