TEREESTRIAL ISOPODA OF jVEW ZEALAND. lid 



segment has two pairs, and each of the other six segments one jmir, of conical teeth or 

 spines arising at right angles to the dorsal surface and situated in the same longitudinal 

 lines as the teeth already described. More laterally each of the first six segments l)ears 

 on each side two thin crests arranged in two longitudinal lines, but the crests of each 

 segment widely separated from tliose of the coutiguous segments ; in the seventh segment 

 the outer pair of crests is represented only by small spines. External to the outer row of 

 crests each segment bears tAAO or three small tubercles or spines, wliich are concealed in 

 dorsal view by the outer row of crests. Epimera very largely developed and projecting 

 someAvbat horizontally, that of the first segment much larger than any of the others ; 

 first two segments of raetasome concealed in dorsal view by the projecting liinder margin 

 of the last segment of the mesosome ; each of the third to fifth segments has tbe binder 

 margin produced into two teeth similar to those in the mesosome but smaller ; these 

 teeth increase in size from tbe thii'd to fifth segment. From the centre of the terminal 

 segment arises a small keel projecting backwards, and ending in a sharp tooth ; the 

 epimera of the third to fifth segments are very long and narrow ; liinder margin of 

 terminal segment straight, not much narrower than the base ; sides concave. 



Eyes of moderate size, convex, of about twenty facets. Antennul;« and antennas not 

 observed. Uropoda with the lateral portion of the joint long and narrow, end rounded, 

 outer branch narrow, fully three times as long as broad, arising from a well-marked 

 notch in the inner margin of the base, not reacbing to the end of tbe terminal segment, 

 ending in a small seta ; inner branch very short, scarcely reaching as far as the base of 

 the outer branch. 



Colour a rich brown, with niimerous markings of a darker brown. 



Length 6 mm. 



Habitat. — Petane, near Napier [A. Hamiltorb). 



Remarks. — In accordance with a wish expressed by Mr. G. M. Thomson, I gladly 

 name this species after its discoverer, Mr. A. Hamilton. I have only the dried specimen 

 originally described and figured, but not named, by Mr. Thomson, but it is, I think, 

 sufiicient to show that the species may, provisionally at any rate, be placed under 

 Armadillo. The wealth of crests cind spines or teeth on the dorsal surface is quite 

 extraordinary, and I fear tbat the description Avill convey a very inadequate idea of the 

 actual specimen ; a better idea may be got by consulting Mr. Thomson's figures. 

 Mr. Thomson describes tbe legs as " very feebly developed and, as far as 1 could make 

 out, appear to want the dactylos." There are no legs now attached to the specimen, but 

 in the tube I found two fragments possessing normal dactyla similar to those found in 

 other species of Armadillo. 



7. Armadillo Macmahoni, sp. nov. (PI. 16. tig. B.) 



Specific descrijdion. — Body convex, tuberculated and setose, especially on the tubercles ; 

 surface with depressed hexagonal markings. Cephalon with the dorsal surface roughened, 

 somewhat setose, front with well-marked transverse ridge, a little lower in the middle. 

 Eirst segment of mesosome with inferior margin revolute anteriorly, posterior portion 

 deeply notched, second segment also notched, but with the inner lip of the notch not 



