MALE. 1 93 



nified about 60 times ; the positions of the cirri and the 

 outline of the thorax are accurately shown by dotted 

 lines ; a lateral view is given in fig. 1 . In the specimen 

 figured, the longitudinal diameter of the mouth, including 

 the labrum, was T ^th of an inch. The muscles of the 

 several tropin have transverse striae, and are the strongest 

 and most conspicuous of any in the body. The labrum 

 is largely bullate, with its summit slightly concave ; the 

 tropin are arranged in a remarkable manner, in a semi- 

 circular line, so as to be opposed to the labrum rather than 

 to each other : there are no teeth or spines on the crest 

 of the labrum, which overhangs the oesophageal cavity. 



The Palpi (fig. 2 b and fig. 3) are very small, dark 

 purple, bluntly pointed, with a few small bristles at the 

 point; they do not extend beyond the knob at each 

 corner of the labrum, which is here present, as in all 

 other Lepadidse; they are much smaller than in the female, 

 though of a similar shape, and consequently, their points 

 are much further apart: within their bases, the lateral 

 muscles of the mandibles are, as usual, attached ; they are 

 represented in fig. 3, as seen from the inside, with the 

 eye on a level with the concave summit of the labrum. 

 The rudimentary condition of the palpi is connected, as 

 remarked under the Anelasma squalicola, with the absence 

 of efficient cirri. 



The Mandibles (fig. 7) are well developed; they so 

 closely resemble those of the female that it is superfluous 

 to describe them : they are, however, smoother, without 

 any trace of the teeth being pectinated, and with the 

 inferior point smaller : measured in their longer direction, 

 they are 5555th of an inch in length, and, therefore, a little 

 less than one third of the size of those of the female. 

 These organs have the usual muscles well developed, and 

 the usual articulations. 



The Maxilla (fig. 8) have a rather rudimentary ap- 

 pearance; yet they have the same size relatively to the 

 mandibles, as in the female, the spinose edge being ^th s 

 of an inch in length. These organs resemble, to a cer- 



13 



