4° 



The study of the structure of the animal contained within the capitukim has yielded the 



following results : 



Mouth. Labrum distinctly bowed with a row of about 30 rounded chitinous knobs 

 at the place of the teeth and with a series of delicate hairs inserted in front of the knobs. 

 Palpi short, broad at the base, conical with several bristles along the outer margin and a 

 tuft of such bristles at the tip. 



Mandibles (fig. 6) with three teeth and the inferior angle. The second and third 

 tooth and the third tooth and the inferior angle at nearly equal distances from another, the 

 first and second tooth at twice the distance of the other teeth. The inferior angle is slightly 

 raised at its extremity and terminates in a not very pointed tooth, much ressembling the other 

 three teeth. Very small, sharp spines occur along the upper edges of tooth 2 and 3, as also 

 alono- the upper edge and along the under edge near the extremity of the inferior angle. Near 

 the outer edo-e the surface of the mandible is furnished with numerous hairs which are placed 

 in groups of two or three; some hairs reach over the free edge, numerous others are planted 

 along the inferior margin. 



Maxillae (fifT. 7) with three strong spines above a rather broad notch and the 

 part beneath the notch .slightly produced. Between the three upper spines, of which the first 

 is by far the strongest, a few delicate hairs are planted, one of which is distinctly serrated. 

 In the notch are a few short hairs and about 10 rather strong spines, arranged in a double 

 row^ along the lower part. Hairs in groups of two or three on the surface near the free edge; 

 a row of stronger hairs along the inferior margin and a few hairs forming a group at the upper 

 margin near the insertion of the upper .spine. Apodeme rather long. 



Outer maxillae short, rounded at the extremity with a dense tuft of spines near 

 that extremity and along the inner side. Between the longer spines are inserted numerous very 

 delicate hairs. 



Cirri short and nearly straight, hardly curved. First jjair very short, 2"<i — 4"^ pair 

 longer than the others, 5"^ ancl 6''^ pair considerably shorter than the foregoing ones. 



First pair placed close to the mouth, at a little distance from the second, with 

 short and rather unequal rami of 5 and 6 segments. The shorter ramus has the first segment 

 indistinctly divided into two segments and the four following ones decreasing in dimension. Hairs 

 on the segments nurrierous, increasing in strength from the first to the fifth segment; about 

 the middle of its length each segment has a distinct transverse row of longer hairs. The last 

 segment bears two claw-Hke spines at the tip. The longer ramus is considerably broader; it has 

 six distinctly separated segments, decreasing in dimension from the i*^' to the 6"^. The lower 

 are densely covered with hairs, the distal in a less degree. The last segment has four strong 

 spines at the tip; these are not quite so strong and a little less curved than those at the tip 

 of the shorter ramus. 



The 2'^<i to 4"^ cirrus has nearly equal rami of 9 to 10 segments. The shape of the 

 segments is almost quadrangular, with the exception of the first segment of each ramus, which 

 is from 2 to 3 times as long as broad and of the last segment, which is small and rounded 

 at the tip. The bristles form transverse rows near the extremity of each segment and a tuft 



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