165 
and a transverse row of long hairs is seen in front of the base of each maxilliped; two 
lists are found between head and trunk behind the maxillipeds. The lateral margin of the 
head has a tolerably broad stripe of rather short hairs; this hair-covering extends upward 
on the proximal part of the lateral surface of the head, besides forming a narrow transverse 
belt immediately behind the head across the anterior part of the trunk. Except this hairy 
belt the trunk is naked, and trunk-legs I have not been able to find. The genital area is 
much larger than the head (fig. 2a) and consists of a very large round plate which is a 
little broader than long (tig. 2e); the central part of the plate is more thinly chitinised 
(marked in the drawing by a light greyish tint), whereas the larger part of it is thick 
and light brown. The genital apertures which are situated a little in front of the centre 
of the plate, are exceedingly small in proportion to its size and are found close toge- 
ther; their anterior extremities run nearly parallel, further backward they diverge 
considerably; their muscles are turned a little forward and strongly outward, but do not 
reach half the distance to the margin of the plate. The thin part of the plate in front of 
and partly outside the genital apertures is furnished with a number of short hairs, and a 
considerable part of the thinner area of the plate behind the muscles has some very short 
hairs; close behind the genital apertures we see the caudal stylets which are exceedingly 
small, and in front of these a diminutive transverse area very Closely covered with extremely 
short hairs; the remainder of the plate is naked (in the drawing one of the receptacula 
seminis is indicated by a dotted line and marked r). 
MALE. It is large compared with the female (fig. 2b: fig. 2a), and in reality com- 
paratively very large, exceeding in size all other males of the whole family: the smaller 
one of my two specimens measuring *84mm., the larger one “92mm. in length. In shape it 
stands far apart from all species known. Seen from below (fig. 2f), its length is to the 
breadth as 5 to 3; the animal is broadest at or a little in front of the middle, somewhat 
narrower towards both flatly rounded ends; moreover, the head is much shorter than the 
trunk. Off the posterior margin of the mouth the lateral border of the head is very sloping, 
bending strongly outward, and more backward it forms a deep imward curve stretching poste- 
riorly to a point a little outside the base of the maxille; these arched borders and the 
frontal border combined form the sides of a deep cup, the posterior part of which — if it 
were not wanting — would pass across the base of the maxillee; in the middle of this cup 
the rostrum is situated. Seen laterally (fig. 2¢), the body is strongly curved, its ventral 
side being pretty deeply concave, the dorsal outline very convex. This line, moreover, is 
divided by three bends which are rather far apart and at equal distance from each other; 
the foremost of these bends is on a line with the mouth, and coinciding with it at the back 
the boundary of the hair-covering runs in a slightly oblique line towards the posterior angle 
of the outstanding lateral border of the head, whereas from the two other dorsal bends 
transverse depressions continue a good way on the lateral surface of the trunk. Finally, we 
see on the hindmost half of the ventral side of the trunk a large, but not very thick, flatly 
