142 " ENDEAVOUR " SCIENTIFIC RESULTS. 



The linea anomitrica is well marked in its posterior half, 

 except near the posterior margin ; the anterior half is less 

 distinct. 



The supraocular horns possess, besides an inner sub- 

 terminal tubercle or spinule and two large outer spines, 

 an outer spinule further from the tip than the inner one, 

 and may have also a dorsal spinule further back and a 

 fourth spinule on the outer margin of the anterior of the 

 spines. The horns are relatively longer in the young than 

 in the old. 



In the following table all the measures are of males 

 and are taken to the bottom of the sinus between horn 

 and rostrum : 



Reg. Carapace Rostrum Horn 



No. Sex. Length. Length. Length. 



E.5173 Male .... 20.2 5.6 12.6 



E.3691 Male .... 23.6 6.4 15.6 



K4776 Male .... 31.6 7.3 15.8 



E.5135 Male .... 43 10 23 



E.5131 Male .... 51.3 12 23 



E.5128 Male .... 69.6 14 28 



The surface of the carapace is covered with a short 

 pubescence which is formed of single, acorn-shaped vesicles 

 and embraces the granules and tubercles with which the 

 carapace is roughened as well as the intervening spaces. 



The chelipeds are stout in the adult male, slender in 

 the female and young male ; arms rough with tubercles and 

 granules arranged mostly in longitudinal rows, and with a 

 row of five spines above. Wrist furnished with larger 

 tubercles and with granules. The palms of the female are 

 slender and weak and remain so with age; they are almost 

 cylindrical, very slightly flattened and of nearly uniform 

 width, except at the articulations. The male, on the con- 

 trary, shows a slender palm, only until the carapace 

 (including rostrum) measures about 3 cm. in length, in 

 one case 4 cm. (E.3685). It then changes by widening 

 gradually to the distal end (E.4788), but soon grows more 

 swollen, at first rather uniformly so throughout its length 

 (E.4776), at the same time being a little compressed. It 

 then becomes more and more swollen in the middle until 

 in the largest specimen (8 cm.) the palm is remarkably 

 inflated, its height in the middle 24.3 mm., its thickness in 

 the middle 22.1 mm. 



