Hcbard — Dcnnaf'tcra and Orthoptcra of Hawaii 365 



Mount Tantalus. Oahu, III, n, 1906. (W. M. Giffard). i ,^ ; 

 VIII, 4. 1912 and X. i, 1911, (O. H. Swezey), 3 juv. 9 ; 

 1200 feet. III. 27,, 1907, (W. M. Giffard). 15 ; 1500 

 feet. II. 2. 1906. (W. M. Giffard), 1$ ; 1800 feet, IX, 

 15. 1907. ( W. M. Giffard), i $ . i juv. $ , intensive colora- 

 tion; 2000 feet. II. 24, 1906. (W. M. Giffard). i^, 2?, 

 3 juv. S , (with tegminal and wing- pads) ; 2000 feet. VII, 

 29, 1909, (J. Kotinsky ), i $ , [Terr. Bd. Agr., H. S. P. A., 

 Hebard Coil, and U. S. N. AI.]. 



Mount Olympus, Oahu, VI, 3, 1919, (J. A. Kusche ; in hol- 

 low branch of Freycinetia), 1 $ , i juv. S , (with tegminal 

 and wing pads), intensive coloration, [Hebard Coll.]. 



Manoa Cliff Trail. Oahu. IX, i, 19 18, (P. H. Timberlake), 

 I S , [Timberlake Coll.]. 



Pablo. Oahu, VI, 24. 1917, (J. C. Bridwell), i juv. S (with- 

 out tegminal or wing pads), [Bishop Mus.]. 



This handsome insect is decidedly the largest species of the 

 genus. Compared with the largest female before us, however, 

 the smallest females are seen to have a very different general 

 facies, due to their great size reduction and recessive coloration. 

 The reduction in limb and cereal length in these, though great, 

 is seen to be less marked than the reduction in ovipositor length. 



As a result of the decided size variation in the species, one 

 immature male before us in the first of the instars that show 

 tegminal and wing pads, is no larger than another immature male 

 in the last instar in which the tegminal and wing pads are lacking. 



Compared with P. oahiieiisis Perkins, the present insect, 

 though slender, is seen to be much more robust than that species, 

 while the smallest individuals approximate in size the largest of 

 oahuensis, both species being subject to very great size variation. 

 Owing to the heavier build, the pronotum of alafus is much 

 broader, as is the stridulating area of the male tegmina. In 

 females, the ovipositor of alatns varies from slightly longer to 

 over three times as long as the maximum known for oahuensis. 

 In addition the present species shows a distinctive and striking 



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