518 Mr. R. I. Pocock on the Morphology and 
of the penis as well as of the gonopods to a condition not 
very far removed antecedently from that which still persists 
in the Colobognatha, the condition seen in the Opistho- 
spermophora haying been evolved along one line, that seen 
in the Proterospermophora along another, that of the Asco- 
spermophora along a third. 
IJ.—DescriPtions oF NEW ForMs. 
CHORDEUMOIDEA. 
Genus HuttTonIgLia, nov. 
Resembling the two Oriental genera Heterochordeuma, 
Poce., and Pocockia, Silv., in possessing thirty-two segments. 
Eyes consisting of 25 contiguous ocelli, arranged in 5 rows 
of 7, 6, 5, 4, 8 each, inner row of seven, the outer of three. 
Antenne long and slender, third segment the longest; 
fourth, fifth, and sixth not very unequal in length, the fifth 
a little longer than either. 
First tergal plate semicircular (fig. I. 1, p.521); of the three 
setiferous tubercles on each side, the middle one is a little 
nearer to the inner than to the outer, which is above the 
lateral angle. From the first tergite backwards to the middle 
of the body the lateral or outer tubercle gradually increases 
in size to form a large tuberculiform excrescence on each 
side ; the other tubercles are smaller and close above it, the 
median larger than the inner (fig. J. la). Thus the three 
tubercles are completely lateral. In the posterior half of the 
body the external tubercle gradually dwindles in size and loses 
its prominence, the last segments, excluding the anal, being 
furnished with six tubercles, subequal in size and subequally 
spaced, arranged in a transverse row across the terga from 
side to side (fig. I. 1 4). 
Bristles stout and aciculate. Segments crescentically 
grooved laterally. 
g. Legs of first, second, and third pairs unmodified ; 
of fourth, fifth, sixth, and seventh thickened, “ fleshy,” with 
terminal segment long, arcuate, with the concavity postaxial, 
extremity of the fourth pair (fig. I. 1 c) ending in a small 
button-shaped prominence like the tip of a foil; those of 
the fifth and sixth pairs apically rounded, clawless ; that of the 
seventh pair with its distal half expanded, compressed, and 
postaxially excavated, ending in a short stout claw (fig. I. 
1d). Coxal segments of seventh appendage (fig. I. 1 e, 1 f, 7) 
enlarged, produced posteriorly into an acuminate and elongate 
bristiy process. Legs of eighth pair (fig. I. le, lg, 8) 
