"ENDEAVOUR'' SCIENTIFIC RESULTS. 



from being more or less flattened out, the "salient free 

 edge" becomes strongly incurved. The typical adult 

 thelycum is better figured by de Man than by either 

 Alcock or Kishinouye. 



The fifth legs of this smallest "master sii" female 

 reach about four-ninths the length of the antennal scale, 

 while the third maxillipeds fall just short of its 

 proximal third. In this specimen any pubescence that 

 may have been present seems to have become rubbed off. 



The intermediate of the three Cooktown specimens 

 is an immature male of 51 mm., and resembles the cotype 

 in having the lobes of the petasma still rudimentary 

 and entirely separate. The tips of its fifth legs reach a 

 little beyond the middle of the antennal scale, and the 

 third maxillipeds extend only as far as the proximal 

 three-tenths of the length of the scale. On the abdomen 

 there are very evident traces of pubescence. 



The largest specimen, also a male, measures 74 mm. 

 in length. The two halves of its petasma are consider- 

 ably more developed than in the smaller specimen, and 

 joined. Superficially, this petasma somewhat resembles 

 that of P. brevicornis, as figured by Alcock, but the 

 similarity seems to be due to the immaturity of the 

 Cooktown specimen. The "gargoyles," as they are 

 designated by Alcock, apparently have not attained their 

 adult or mature condition. The median, dorsal lobes 

 are prominent, and not hidden by the "gargoyles" as 

 occurs in full grown specimens. The petasma of the 

 adult of P. monoceros is rather better figured by de Man 

 and Kishiuouye than by Alcock. The relative length 

 and the evident meral notch of the fifth legs, together 

 with the shape and dentition of the rostrum, seem to 

 definitely preclude any confusion as to the identity of 

 this immature male. 



The fifth legs of this specimen extend seven-eighths 

 the length of the scale, and the third maxillipeds but 

 four-elevenths of its length. There is even more 

 pubescence on the abdomen than in the smaller male. 



The rostrum of this large male from Finche's Bay 

 is identical in proportion, general shape and trend with 

 those of several specimens of monoceros 100 mm. long, 

 from Formosa. The smaller male and the female have 



