Bibliographical Notice. 123 
margin ; the general distribution of these markings, therefore, 
is similar to that of A. echeria, but their relative proportions 
are more nearly as in Awlobengula ; the quadrifid spot beyond 
the cell is, however, different in character from that of all 
the known species: secondaries browner, sericeous towards 
anal angle, and with the sexual patch somewhat ill-defined ; 
an elbowed ochreous belt occupying the basal two fifths and 
traversed by the black subcostal vein and part of its first 
branch; a discal irregular series of eleven large ochreous 
spots, of which the first, sixth, and eighth are distinctly 
larger than the others; a nearly marginal series of seven to 
eight dots in pairs, commencing from the second subcostal 
vein: body pitchy black-brown, with two white points on the 
head. Wings below brown, the apical area of the primaries 
and outer three fifths of the secondaries somewhat olivaceous ; 
all the ochreous markings paler than above, and several addi- 
tional small spots or dots near to the outer margin in all the 
wings. . 
Exxpanse of wings 80 millim. 
Two male examples. 
Perhaps the most distinctive characters in this species are 
the position of the ochreous belt of the secondaries at, instead 
of a short distance from, the base, the consequent widening 
of the dark external area, and the great size of the spots of 
the discal series on these wings, reminding one of T?rumala 
limniace. 
BIBLIOGRAPHICAL NOTICE. 
Manual of Conchology, Structural and Systematic. Second Series.— 
Pulmonata. Vol. 1X. By H. A. Pitssry. 8vo. Philadelphia, 
1894. 
A LONG-FELT want has been experienced by the conchological student 
of a sound arrangement and classification of that enormous assem- 
blage of mollusks familiarly known as Helices. Many classifications 
have from time to time been proposed, but experience has shown 
them to be more or less unsatisfactory. Being based to a great 
extent upon conchological characters, or characters derived from 
the study of some special organ, this might naturally be expected: 
Perhaps the best of these arrangements was that worked out by 
Dr. E. von Martens in the second edition of Dr. J. C. Albers’s 
‘Die Heliceen” Although this work has held its own for some 
thirty years past, and, to a great extent, formed the basis of the 
last system of classification—that of Dr, L, Pfeiffer—it has long 
