522 OUTLINES OF PERIODICAL LITERATURE. 
genus ligea, I. nubecula, I. frontalis, I. micromphala, 1. infuscatus, 1. drymo and 
I. clio; Chloroperla spino, C. grammatica, C. transmarina, C. clymene, C. ephyre, 
C. flava, C. apicalis, C. cydippe, C. bifrons and C. opis ; Leptoperla beroé, a 
slender and very elegant insect from Van Dieman’s Land. A course of ob- 
servations on the RopEnT14 is here commenced by Mr. Waterhouse, with a 
view to point out the groups, as indicated by the structure of the Crania in 
this order of mammals: he regards the zygomatic arch and ant-orbital fora- 
men as affording the most constant characters: he arranges the order into 
three sections, and names them, Murina, Hystricina and Leporina ; and, in 
the present communication, under the first section, he treats of the Sciuridee 
as a family, and illustrates its characters with five graphic outlines. For 
short communications, there are—a note on the Amphicoma vulpina a new 
genus of the lamellicorn group, from W. Florida; a statement on some fos- 
sil cetacean remains obtained from the yellow marl of Herne Bay, in Kent ; a 
note on the argonaut ; and a set of ornithological remarks recommending 
the occasional publication of lists of birds shot in different parts of the king- 
dom, so as to afford a sort of index to collectors: the writer exemplifies his 
suggestion by enumerating the chief rarities which have come under his own 
observation. 
No. X XVII, Marcu.—Here, a lady contributes the first article: it is 
furnished by “Madame Jeannette Power,’ and consists of physiological obser- 
vations and experiments on the “ Poulp of the Argonant:” the ingenious 
female naturalist has assured herself that this Mollusc is the constructor 
of the sheli which it inhabits. Mr. Thompson and Mr. Patterson relate 
their important observations on Snow Crystals, of which nineteen different 
forms are enumerated; and, for the next communication, you have the first 
portion of Dr. Bachman’s monograph of the genus Sciurus, with descriptions 
of new species and their varieties in N. America: here, the doctor treats 
chiefly of S. capistratus, the fox squirrel, its specific characters, habits and 
geographical distribution. Another section next appears, of Mr. Garner's 
essay on the anatomy of the Lamellibranchiate Conchiferous Animals: in 
this, he notes what is known of the chemical composition of the shells of Bi. 
valves, makes some remarks on the articulation of the valves, and then de- 
scribes the muscular and nervous systems of the shell-occupying tribes. In 
his observations on the history and classification of the Marsupial quadrupeds 
of New Holland, Mr. Ogilby professes to investigate the relations and esta- 
blish the zoological characters of these interesting animals: his essay abounds 
with facts and inductions peculiarly deserving the best consideration of natu- 
ralists. 'T'wo lists of vegetables are furnished by Mr. Pamplin in his remarks 
on the Botany of Selborne: the first includes the sixteen plants mentioned 
by Mr. White, “the amiable natural historian of that truly delightful spot :” 
the other is a catalogue of thirty rarer species of indigenous plants growing 
near Selborne: the district, he adds, is rich in willows and ferns, which flou- 
rish in the deep shady lanes, in wonderful variety and beauty. Mr. Double- 
day publishes, in a concise and eulogical article, a complete list of Mr. Tho- 
mas Say’s entomological writings: twenty-nine of these, with their exact 
titles and dates of publication, are enumerated. From the pen of Dr. Clarke, 
you have curious and valuable remarks on Perdrix rubra the red-legged par- 
tridge, with a copious synonymy. The “Short Communications” contain 
accounts of a fall of meteorolites and of a singular procession of catterpillars, 
