Report on the Malacostraca, Pycnogonida and some Entomostraca. 517 



1st ant. (fig. 2) consists of the usual parts. The 1st joint of the 

 stalk has a large spine almost midwa}^ on the outer edge. The 2nd 

 and 3rd joints almost equally long; the 2nd joint has a tooth on 

 the outermost, anterior corner. The endopodite as long as the 2 

 distal joints of the stalk together; has 4 or perhaps 5 joints, the 1st 

 joint being perhaps divided into 2 by an indistinct constriction. The 

 exopodite has 5 thick joints and is twice as long as the endopodite. 



The squama (fig. 2) has the outer margin straight, inner margin 

 convex; the length is ca. 3 times the greatest breadth, which lies 

 a little on the inner side of the middle. On the outer anterior 

 corner a tooth, w^hich reaches as far forwards as the point of the 

 squama. Point of the flagellum wanting, so that its length cannot 

 be given; rest of the flagellum has a free joint proximally; the 

 remaining joints are only indicated by constrictions. 



The mandibles (fig. 3) have a quite small, unjointed palp. The 

 mastigatory part is divided into an anterior cutting part and a pos- 

 terior molar process ; unfortunately the point of the former is 

 wanting. The molar process is almost wedge-shaped and has at the 

 end a large, strong tooth and also setæ. 



The 1st pair of maxillae (fig. 4) bear a palp on the outer side 

 with the two points close together. The form of the 2 lobes of the 

 basal part can be seen from the figure ; unfortunately the point of 

 the inner lobe is wanting. 



The 2nd pair of maxillae (fig. 5) consist of the usual parts. The 

 mastigatory part projects far forward, especially the foremost, bifur- 

 cated lobe; the hindmost lobe is not so projecting and on its anter- 

 ior margin has but a small accessory lobe. The palp somewhat 

 more slender than on mx^ and with a constriction in the middle, 

 but with no true articulations. The exopodite is a large, oblong 

 plate; the front partis almost rectangular, the inner margin however 

 somewhat concave; the hindmost section is only half as long as 

 the front part and becomes broader out towards the end. 



The 1st pair of maxillipedes (fig. 6) are much compressed like 

 mx^. Both the mastigatory and basal lobe are undivided and pro- 

 ject almost equally; of spines on the hindmost lobe there remains 

 only one, single, long spine, pointing backwards. The palp, which 

 is longer than in the maxillae, is distinctly divided into 3 joints. 

 The exopodite is long, bent somewhat inwards and has 3 pairs of 

 ciliated setæ at the tip. The epipodite is large and has a constriction 

 a little in front of the middle. 



The 2nd pair of maxillipedes (fig. 7) consist of the same parts 

 as mxp\ but the palp is developed at the expense of the remainder. 

 In contrast to mxp^ there is a distinct articulation betw^een the 2 

 XLV. 37 



