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PROCEEDINGS OF THE NATIONAL MUSEUM 



*Plumosities not visible but minute fragments of dirt clustered around setule suggest fine plumosities 

 are present. 



showed the presence of these features as well as other characteristics 

 of C. longipedis. In Pearse's original description (1952b), however, 

 the figures do not indicate the relationship. The shape of the genital 

 segment in the figure of the female, the presence of 2 segments in 

 the abdomen of the figure of the male, and the "appendage on basal 

 segment of second leg" (Pearse, 1952b, fig. 31) all suggest a species 

 distinct from C. longipedis. Pearse, however, apparently made his 

 description and figures from permanent whole mounts. The absence 

 of spacers between the slide and the coverslip has distorted the shape 

 of the body and, in one specimen at least, changed the shape of the 

 appendages. The so-called appendage on the basal segment of the 

 second leg coidd not be definitely found although, presumably in the 

 original mounting of the specimens, the proximal end of one of the 

 sclerites on the surface of the second segment of the female second 

 thoracic leg has torn free. This sclerite projects anteriorly and 

 medially, giving an appearance similar to that shown in Pearee's 

 figure 31 and the appearance that it arises from the first segment 

 of the protopodite. 



Although the author has not examined specimens of Caligus lucidus 

 Heegaard, 1962, the suggested nature of the maxUla (Heegaard's 

 "first maxilliped," no figure number given but identified as MxPi 

 in figure series 54-61), the nature of the armature on the fourth tho- 

 racic leg (fig. 58; although the segmentation is not shown), and the 

 shape of the body of the female all indicate that the species is synony- 

 mous with C. longipedis. 



The description by Shiino, 1959d, of C. amplijurcus Pearse differs 

 in few details from that given here. The one important difference 

 is that Shiino indicates the presence of 2 segments in the exopodite 

 of the third thoracic leg while the present author indicates that 

 this ramus is 3-segmented. As in C. quadratus, however, Shiino 



