96 Zoological Society :— 
Distance from anterior molar to incisors much less ; auditory bullee 
much smaller. Incisors shorter and straighter, and very deeply 
grooved on the anterior surface. Molars smaller, but otherwise 
similar in form. Length of skull 1} inch. 
General differences from Lagomys princeps—First, in being smaller, 
12 inch shorter in total length; the ear, measured from behind, 4 inch 
‘shorter: the colour generally darker, especially the lower third of 
the back. 
Secondly, in the structural differences of the skull; for although 
these differences are not prominent or well defined, yet they are un- 
questionable-variations. 
Thirdly, in the habit of constructing a nest of hay for the winter 
sleep, and in living at a much greater altitude. 
April 21, 1863.—E. W. H. Holdsworth, Esq., F.Z.S., in the Chair. 
DESCRIPTIONS OF SEVERAL NEw SPECIES OF WORMS BELONG- 
ING TO THE ANNELIDA ERRANTIA AND SEDENTARIA OR TU- 
BICOLA OF MitnE-Epwarps. By W. Bairp, M.D., F.L.S. 
The following very interesting species of Annelides were collected 
by Mr. Lord, during the time he was engaged as naturalist on the 
N.W. American Boundary Commission. They appear to me to be 
undescribed. They will be figured in the forthcoming report of the 
labours of the commission. 
1. Leprponotus INSIGNIs, Baird. 
This is a very fine species of the genus Lepidonotus. It is rather 
more than 3 inches long, and is nearly 4 an inch in breadth, exclu- 
sive of the sete of the feet. On the upper surface, the body is of a 
whitish colour, marbled with black. The sides, which are covered by 
the elytra, are white, and a broad black line runs down the centre of 
the dorsum throughout its whole length. The feet are encircled 
with fine black circular lines. The elytra, eighteen pairs in number, 
are oval, white, with black dots on the outer sides and centre, and 
they are marked with a black semicircular patch on the inner edge. 
They do not overlap each other, except near the head. On the body 
of the animal they are wide apart, leaving the centre of the back ex- 
posed. The under surface is of a bluish-black colour, with a narrow 
white line running down the centre. The proboscis is large and 
wrinkled, and the jaws are of a reddish-brown colour. The antennze 
are five in number, the central one being nearly three times as long 
as the external pair, and of a pure white colour ; the internal and 
external pairs white, ringed with black. The feet are very prominent, 
strong, rounded, conical, and armed with seven or eight stout brown 
bristles. The second branch is extremely small, and sends off two 
or three very small white sete. The superior cirrus is tolerably 
long and sharp-pointed ; it is pedunculated, the peduncle being stout, 
conical, and of a deep black colour. The inferior cirrus is short, 
conical, and sharp-pointed. The last segment of the body is termi- 
nated by two tolerably stout, but not long, cirri. 
Hab. Esquimalt Harbour, Vancouver Island (Mus. Brit.). 
