MACRT'RA. SCHMITT. - 45 



which is about reached by the third pair of legs; the 

 first legs exceed the antennal peduncle by one-half the 

 length of the fingers; the second and fourth pairs are 

 wanting; the left fifth leg just surpasses the point of 

 articulation of the antenna! scale; this is unusually 

 short as compared with the other specimens in the same 

 lot, as well as more typical specimens of P. str'ululanat 

 (= novcB-guinecs) . The carina on the second abdominal 

 somite is rather small ; that of the third somite is dis- 

 tinctly grooved. From the tip of the telsou this specimen 

 is about 32 mm. long, a little shorter than the holotype. 



The large female is 80 mm. long from tip of rostrum 

 to end of telson, the carapace and rostrum together are 

 29 mm. long, and the rostrum alone about 11-5 mm. 

 long. The rostrum is distinctly upcurved, and extending 

 nearly half the length of its free portion beyond the 

 eyes, reaches well to the end of the second segment of 

 the antennular peduncle. Post-ocular, antennal, and 

 hepatic spines proportionately well developed, and 

 antero-lateral angle of the right side of the carapace 

 spined; on the left side, however, rounded. The 

 stridulating organ of this specimen is placed much like 

 the one figured by Alcock (op. cit., 1906, pi. v., fig. 14&) 

 and of the same shape; either organ has twenty-one 

 or twenty-two transverse ridges. The third maxillipeds 

 extend along nine-tenths of the antennal scale; the fifth 

 legs are missing. As in typical P. norcr-guinecc the first 

 and second legs are spined beneath. The carina on the 

 second abdominal somite is very short and insignificant, 

 on the third well developed and distinctly grooved. 



The two small males, McCulloch informed me, are 

 those which Haswell confused with "Pcnwus granulosus" 

 and referred to at the end of his description of that 

 species. The larger of these is about 50 mm. long. Its 

 rostrum is straight and uptilted, and carries eight teeth 

 including the epigastric, which is the only one situated on 

 the carapace ; there are 'eleven ridges to the stridulating 

 organ; the antero-lateral angles are spiniform and the 

 third maxillipeds reach not quite nine-tenths the length 

 of the autennal scale. 



The carina of the third abdominal somite is grooved 

 for only the posterior half of its length. The petasma is 

 like that of the male nonce-guinea', above in having the 

 fringes on the "lobule" of the left lobe faintly indicated. 



