428 Miscellaneous. 
Hab. Open plains, Darling Downs, New South Wales. 
Fur very soft, and both on the upper and under parts of the body 
of a slate-grey colour next the skin; general hue of the upper parts 
of the body ashy grey, much pencilled with black; on the sides of 
the body there is but little of the black pencilling, and hence the 
general hue is paler; and on these parts, as well as on the sides of 
the head, is a faint yellow tint; under parts of the body white, very 
indistinctly suffused with yellow on the mesial portion of the abdo- 
men; between the white of the under parts and the greyish hue of 
the sides of the body is a narrowish space of an almost uniform pale 
yellow hue, and the same tint is observable on the outer side of the 
legs; feet white, obscurely tinted with pale yellow; on the upper 
surface of the head is a mark, narrow on the muzzle, but becoming 
expanded behind, which is almost entirely black, and immediately 
around the eyes the hairs are also black ; ears of moderate size, their 
posterior margin nearly straight, clothed internally with small pale 
yellowish, and externally with black hairs, excepting on the hinder 
part, where they are pale; tail very thick at the base (about 34 lines 
in diameter), becoming gradually slender to the apex, and clothed 
throughout with very minute hairs, between which the scaly skin is 
visible ; those un its upper part and sides partly black and partly 
yellow, and on the under surface dirty white. The specimen de- 
scribed is a male. 
MISCELLANEOUS. 
On the Existence of Tetraspores in a genus of Alge, belonging to the 
Zygnemata. By M. Monraenz. 
“ Repropuctive bodies of two kinds have for a long time been 
observed in those Algze which are denominated Floridee. Those 
which constitute the spores are inclosed in variable but distinct con- 
ceptacula, which are especially remarkable from the place which they 
occupy in different individuals. The others, nestling in the cortical 
stratum, or placed in rows in the transformed branches, are at first 
entire, globose or ellipsoidal, but at maturity separate into four spores, 
either crucially or horizontally. 
*« Messrs. Cronan of Brest, during the course of the last year only, 
observed in the spores of certain Fucacee, and amongst other species 
Fucus nodosus, where they had never been before ascertained to be 
otherwise than simple, that they also at maturity separated into four 
distinct spores. Dr. J. D. Hooker and Dr. Dickie in Great Britain, 
and Messrs. Decaisne and Thuret in France, not only confirmed this 
fact by their own observations, but studied it in some other species. 
We have then the two first families of the great class of Alge pro- 
vided with spores divided quaternally. 
«« Amongst the hydrophytes of Algiers there is one of great interest 
gathered by M. Durieu in the marsh of Ali-Labrack near La Calle. 
It belongs to the little tribe of Zygnemata distinguished by the co- 
pulation of the threads. At first it does not seem to differ from 
other species, but examined under the microscope it exhibits the 
