1870. | REV. O. P. CAMBRIDGE ON NEW ARANEIDEA. 729 
Theridivide, in the suborder Retitelaria, which substantially accords 
with my own present view of its systematic position. Several others 
of the genera now characterized it is exceedingly difficult to assign 
with certainty to any family groups hitherto established: a know- 
ledge of their habits would, of course, be a great assistance in rele- 
gating them to their proper groups, though even this is not always 
to be relied upon as conclusive in determining the family of a Spider 
(see remarks on nov. gen. RAion, posted, p. 742). In none of those 
now described, however, is any thing known, either of habits or 
habitat, beyond the mere locality in which they were captured; we 
have therefore nothing but structure to guide us; and the general 
form resulting from their structure is in several of the present species 
very far removed from the typical forms of the families to some recog- 
nized genera of which they seem in other respects to be related. It 
is unnecessary to enter into details in this short introductory notice, 
as remarks on the above point will be found appended to the descrip- 
tions of such as appear to be doubtful in their systematic allocations. 
It is, perhaps, only necessary to add here that, of the Spiders forming 
the ten new genera now proposed, siz were received from Messrs. J. 
Nietner and G. H. K. Thwaites, of Ceylon, one from Bombay, from 
Major Julian Hobson (H.M. Staff Corps), one from Natal, and 
two from Sta. Fé, Minas Geraes (captured there by Mr. Henry 
Rogers, of Freshwater, Isle of Wight, and his son, now on a collecting 
expedition in Brazil). 
Fam. Drassipes? 
Nov. gen. SrENOCHILUS (orevds, narrow, xetQos, lip, labium). 
Characters of the Genus.—Cephalothorazx elongate-oval, or, rather, 
somewhat attenuated diamond-shaped, strongly emarginate or in- 
dented on the lateral margins. 
Eyes eight, very unequal in relative size, situated in two transverse 
rows at the fore extremity of the caput, curved away from each 
other, but forming a compact and almost circular group. 
Mazille constricted at their base, enlarged in a circular form at 
the middle on their outer sides, and curved over and inclined towards 
the labium, over which their pointed extremities almost touch each 
other; they are also indented or impressed somewhat transversely 
near their middle. 7 
Labium long, narrow, sharp-pointed at its apex, and a little wider 
near the middle than at the base. 
Legs rather short, and differing but little in relative length, which 
appears to be 4, 1, 2, 3; each tarsus ends with two longish curved 
claws, minutely pectinate towards their base, and springing from a 
sort of heel or minute supernumerary joint. 
Abdomen narrow, elongate-oval ; spinners two only, short, rather 
strong, and biarticulate. 
STENOCHILUS HOBSONH, n. sp. (Plate XLIV. fig. 1.) 
Male adult, length 22 lines, of cephalothorax 13 line. 
