Systematics of certain Chilognathous Diplopods. 519 
dwarfed, hyaline, terminating distally in a pair of backwardly 
directed processes, an outer acuminate, an inner expanded and 
laminate. Legs of ninth pair (fig. I. 1 e, 1 g, 9) terminating in 
an oval subglobular segment (? femur), the preceding segment 
(? trochanter) with a conical bristly process. On the inner 
side of this segment proximally may be seen two processes, 
one longer and curving inwards and then forwards, the 
other shorter, acuminate, directed vertically downwards. 
Legs of tenth pair (fig. I. 1 e, 1h) small, consisting of five 
segments, widely separated from each other and rising 
from the external angles of a broad transverse plate, to the 
anterior surface of which is attached a second plate furnished 
inferiorly with three processes—a median (stout, angular, 
compressed) and one on each side (slender, arcuate, and 
curved forwards in its distal half). The apertures of the 
seminal coxal pouches (este Verhoeff) appearing as a pair of 
slits between the plate that bears the appendages and that 
which bears the processes. 
The type and only known species of this genus is the form 
from Dunedin, New Zealand, described by F. W. Hutton as 
Craspedosoma trisetosum (Aun. & Mag. Nat. Hist. (4) xx. 
pelle, 1877): 
The characters given above are taken (1) from a female 
specimen, no doubt Hutton’s type, which came from the 
Otago University Museum, and was received by the British 
Museum from the Commissioners of the New Zealand Section 
of the Colonial Exhibition of 1886; (2) from a single damaged 
male example, probably belonging to the same species as the 
female, which was captured at Maungatua by Mr. J. V. 
Jennings. 
The male has considerably larger lateral keels than the 
female, but otherwise the two differ but little apart from 
genuine sexual features. The head is olive-brown in colour, 
with the vertex yellow. The antenne are infuscate, flavous 
at the base. The segments are flavo-olivaceous with a 
median fuscous band, and fuscous laterally round the base of 
the tubercles, which are paler. Integument coarsely coria- 
ceous and squamulate. Length 13 millim. 
Other characters which will no doubt prove to be of 
specific value are contained in the generic diagnosis. 
Huttoniella differs from related forms, so far as general 
characters as exemplified in the females are concerned, in 
the features tabulated in the subjoined synopsis (p. 522). 
In such characters it differs considerably from Hetero- 
34* 
