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could not be ascertained; the terminal seta is rather long. The mouth is rather large; the 
mouth-border of medium breadth; the maxilla provided with a well developed additional 
branch. The maxillee moderately large, the distal margin of the basal joint is furnished with 
hairs along the larger part of the articular membrane (fig. 3c). The maxillipeds (fig. 3 f) 
scarcely of medium length, all jomts separated, the basal joimt somewhat clumsy, provided 
at its distal margin with a few short rows of hairs, a similar row a little outside the middle 
of the inner margin, and a tuft at the same distance from the base on the opposite margin; 
the terminal joint ending in three points. The sub-median skeleton between the rostrum and 
the maxillipeds consists of a pair of moderately narrow lists on each side; the skeleton 
between the maxillee and the maxillipeds has a long transverse belt of hairs, some of which 
are long (in fig. 3d the hairs are only drawn on one half of the head.) The lateral margin 
of the head, as far forward as somewhat behind the base of the antennule, is furnished with 
numerous moderately long hairs, a little outside of which another row of similar hairs, ad- 
vancing forward outside the base of the antennule to somewhat in front of it. The trunk 
is closely covered all over with short, most peculiar hairs, each of which is divided from its 
base into three branches, the central one of which is double the length of each of the other 
two. Trunk-legs are found. The genital area is much narrower than the head, it is as 
long as broad (fig. 3¢) and solidly chitinised all over; the oblique genital apertures are 
rather far apart, the caudal stylets situated close together between the distal parts of the 
genital apertures. The whole genital area is almost naked, except some rows of normal, 
fine hairs between the genital apertures, furthermore, a crescent-shaped area in front of and 
outside the anterior half of the genital area is likewise naked, whereas the peculiar hair- 
covering of the posterior part of the trunk extends up to the caudal stylets and to the 
posterior extremities of the genital apertures. 
MALE. A large male is ‘30 mm. in length, whereas an abnormally small, probably 
far from adult specimen is only -182 mm. long; the proportion between length and breadth 
is approximately as 4 to 3. So the male is very small in proportion to the adult female 
(fig. 3b: fig3a). The head is about the size of the trunk (fig. 3h and 3i). The frontal 
border is very considerably produced, and its margin furnished with a row of fine, very 
short hairs; it is crenate, being divided into three pairs of rounded lobes, the outermost 
pair of which is much lower and broader than the others. The antennule much like those 
of the female. The antenne short, having at least two joints; terminal seta long. The 
rostrum, maxillule and maxilla nearly similar to those of the female. The maxillipeds 
differ from those of the other sex in having the basal joint longer, more slender and almost 
naked. The sub-median skeleton without processes and naked. The lateral margin of the 
head fringed with hairs of medium length, and a little in front of the posterior end of the 
margin originates a very narrow stripe of long hairs, which runs upward across the side, 
and further in a somewhat oblique line a little backward across the back of the animal, the 
hairs being exceedingly long in the dorsal part of the stripe. Behind this stripe, the back, 
‘ 15* 
