156 MOLLUSCA. 
with very distinct bands on the upper side, without spots (type and var. elevato-conica), 
being confined to Northern Guatemala, and those with very indistinct bands above and 
many spots (varr. stolliana and sallwana) to Southern, Western, and Eastern Guatemala. 
But these differences also are not sharply defined, as is shown by the var. entermedia of 
Fischer and Crosse. On the upper side the bands are very variable—in number and in 
breadth ; generally they are narrow, but some very narrow and one or two still narrower 
ones may be found in the same specimen (varr. elevato-conica and intermedia). In 
var. stolliana the upper bands are either united to one broad zone occupying nearly 
the whole upper half of the last whorl, except the sutural region, but somewhat indi- 
stinct, or they are quite absent; only in a few specimens one or more distinct bands 
are to be seen above. In the under half there are generally two rather broad bands, 
the outer one never absent, only varying in intensity in var. stolliana; the inner 
one either subequal to the other or much broader, extending to the centre of the base, 
rarely broken up into several very narrow bandlets. 
As regards the locality given by Pfeiffer, see H. eximia, anted, p. 150. 
The var. freytagiana is rather near to the var. stolliana, but the peripheric angle is 
distinct, although obtuse, and the lower side flattened; the columellar margin of the 
aperture is therefore more straightly ascending and the general form of the aperture 
more rhombic. The somewhat deepened patches of the surface, as if caused by 
hammer-strokes, and the dark colour close behind the peristome, are also visible in 
many specimens of the var. stolliana. In some specimens of the var. freytagiana dark 
brown bands, variable in number and breadth, are to be seen more or less distinctly ; 
but in others they are almost totally wanting. 
Named in honour of Gustav Freytag, the well-known German author. 
24, Helix altispira, sp.n. (Tab. IX. figg. 10, 10 a, 2.) 
Helix altispira, Dohrn, in litt. 
Testa elevate trochiformis, imperforata, leviter striatula, superne griseo-fusca, guttulis nigris perraris, inferne 
rufo-fusca, fascia nigra una peripherica et fasciis flavis nonnullis picta ; anfr. 53, primi 2 convexi, nigri- 
cantes, apicem obtusum formantes, sequentes convexiusculi, ultimus ad peripheriam rotundatus, basi 
convexiuscula, Apertura modice obliqua, subrhombea, intus cerulescens; peristoma modice reflexum, 
nigricanti-violaceum, marginibus leviter arcuatis, columellari valde ascendente, appresso. 
Diam. maj. 21, min. 19, alt. 242; apert. diam. 12, alt. obl. 12 millim. 
Hab. Hoyvuras (coll. H. Dohrn). 
In the only specimen I have seen of this species there is a narrow yellow band 
(reddish-brown at its commencement in the third whorl) visible on the upper side, at 
about an equal distance between the suture and the periphery; and the lower side is 
for the most part dark chestnut-brown, but yellow towards the periphery; and where 
these colours meet there are several very narrow bands, alternately yellow and 
chestnut. | 
