BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 10. N:0 9. 7 



The mawillipeds [Pl. I. fig. 7 and 8] consist eacli of a 

 three-jointed peduncle and a four-jointed palp. The • basal 

 Joint of the peduncle is very long and broad, linear; the se- 

 cond joint is short, scarcely the fourth of the first; the third 

 is small, narrow. laminar. From the articulation between the 

 .second and third joints the thick and robust palp projects. 

 The second joint of the palp is the longest, without spines 

 or bristles; the third joint is short but stout and armed with 

 short, strongly curved hooks. The last joint is armed with 

 four long, ciliated bristles [Pl. I. fig. 9]. 



The pereion. The first segment is a little shorter than 

 the head; the second is equal in length with the first. but 

 broader; the third is longer [11:7], increasing in breadth; 

 the fourth is but a little shorter than the third [10 : 11], and 

 still broader. The fifth segment is twice as long as the prece- 

 ding and much broader [17 : 14], it is very thick and tumid, 

 and seen from above seems to form a girdle around the 

 body; the sides of the segment descend very deep, inter- 

 rupting the row of the epimerals, so that the epimerals of the 

 three last segments form a row much deeper down than 

 those of the preceding segments [Pl. II. fig. 22]. The sixth 

 segment is only a little more than the third of the length of 

 the preceding. [7 : 20], and narrower [31 : 34], but its sides 

 reach as far down. The seventh segment is the shortest, it 

 is only half as long as the preceding; its breadth is equal to 

 that of the fourth. 



The epimerals [Pl. II. fig. 22] of the second and third 

 segments are equal in size, occupying the whole length of 

 the segments, triangulär, pointed backwards. The epimeral 

 of the fourth segment is a little larger and less acutely poin- 

 ted. The epimerals of the fifth and sixth segments are much 

 larger, subequal in size, triangulär; the epimeral of the fifth 

 segment does not occupy more than two thirds of the length 

 •of the segment. The epimeral of the sixth segment, a little 

 deeper than the preceding, occupies a part of the fifth seg- 

 ment and the whole length of the sixth. That of the seventh 

 segment is smaller, but nearly as deep as the preceding; it is 

 longer than the segment itself. 



The first pair of pereiopoda [= gnathopoda, Spence Bate] 

 [Pl. I. fig. 10]. The coxa or epimeral is not distinctly separa- 

 ted from the segment, the anterior corner is obtusely angula- 



