1908] -— Decapod Orustaceans. på 
stoutly developed, securiform, transversely truneated, and provided 
with several rows of equal-sized spines. The inner braneh (1) is the 
shortest, broad, lamellar, distally rounded, furnished with longish stiff 
setae. Both the inner and central branches have further åa large 
number of long rather fine setae, mainly along the edges. The outer 
branceh is about as long as the central one. It consists of three distinet 
welldefined joints, the first of which (isehium according to the nomen- 
elature of SpkncE Bark) is å shade longer than the two outer joints 
together and provided with several setae on the inner side. The 
terminal joint is furnished at the point with two equally long rather 
stout setae almost of the same length as the joint itself. 
2nd Maxilla (2nd Siagnopod, fig. 2, IV) consists of four 
branches, of which the two first on the inner side (1 and 2) are 
bi-lobed, the two exterior ones (3 and ec +- mb) not bi-lobed. 
The two divisions of the 1st branch differ considerably from 
each other in breadth and shape. The proximal division is about 
four times as broad at the root as the other, and distally tapers 
triangularly, with åa rounded termination: the distal division is of 
equal breadth throughout and rounded terminally. Both divisions 
are equally long and provided with long setae, which especially along 
the anterior margin are very numerous and dense. | | 
The divisions of the 2nd branch differ somewhat in length but 
have a closer resemblance to one another in breadth and shape than 
we find in the case of the ist branch. The proximal division is 
almost of equal breadth throughout and rather shorter than the 
distal one, and likewise a little narrower in the distal portion than 
the other division, which is here expanded and linguiform so that 
the interior portion is about twice as broad as the basal portion. 
Armature resembles that of the 1st branceh. 
The 3rd branch, which is not bi-lobed, is of an elongated 
eonical shape: with a sharply defined lash-shaped prolongation, the 
tip of which projects a little beyond the preceding and suceeeding 
braneh. The lash is provided at the tip with 5 long thin setae as 
well as with åa number of setae on the outer side: further this 
braneh is furnished with setae, mainly along both its sides. 
The outer branch (ec + mb) is the largest, not bi-lobed, with 
an anteriorly-direeted long linguiform portion (eephysis, Sr. B) and 
a Shorter similarly rounded portion posteriorly-directed (mastigo- 
hranehad NA Of Cha Ex Vol) XXIV påse XX XVI Sr. B. 
