( 652 ) 



Fergnsson ami Tro1)riand (Meek) : Humboldt Ba}', Dutch N. Guinea, ix. x. 



(Doherty). 



This form might be confounded by a casual observer with M. enrnrs errans, 

 especially with such specimens of the latter in which the grey median interspace 

 is reduced to two small patches in consequence of the antemedian and discal bands 

 being merged together mesially. The first and second discal lines of errans are, 

 however, straight in front, the abdomen is grey above, and shows dark basal 

 dots also on segments 5 and (i (the two dots of the latter segment being often 

 merged together to a large mesial patch), the white side-tufts are larger and 

 the palpi are longer, the triangular patch of the mesothoracic tegula is more 

 prominent, etc. 



Lucas's description of approximans applies to .lA conjthus pijlene as regards 

 wings, to the present species as regards abdomen ; while the abdomen described 

 under M. lineata is that of pi/lem and the wings, we believe, those of the snb- 

 sjiecies we have just characterised. Neither of the two names approximans and 

 lineata can be applied (see Introduction, " Nomenclature "). 



Lucas says, I.e., of lineata: "Near M. trochilns, Hubn., M. sitieul, Boisd., 

 M. corythns, Boisd." 



593. Macroglossum nubilum spec. nov. (PI. IV. f. 17, S). 



S ? . Resembling M. promethem inusitata, but is deeper brown, the grey 

 postmedian costal patch of the forewiug extended beyond W towards the distal 

 margin, the distal border of the hindwing convex, twice the width of the yellow 

 band, which widens behind a little. Head without white line above eye, brown 

 triano-ular lateral area of jjalpus not sharply defined above ; first yellow side-patch 

 of abdomen just vestigial, second and third prominent, with deep black patches at 

 the proximal side. 



Wings, itpperside. Forewing: antemedian lines not conspicuous, not distiactly 



filled in with dark brown, more strongly curved than in promet/teus ; first discal line 

 very indistinct, except at costal margin, strongly angulated in front like the second, 

 which is distinct, interspace filled in with brown from costal margin to angle of 

 lines ; grey costal space following this line continued beyond U', reaching more 

 distally R- or even R= ; subapical patches SC^ — IV dark russet, the second blackish 



distally. Hindwing : black basal area continued along SM^ joining the black 



distal border, the yellow band in consequence i)roximally convex ; this band not 

 reaching costal edge, at R- barely lialf the width of the distal border. 



Underside : Mars-brown or mummy-brown, deeper in tint than in .V. 

 promet/teus ; the yellow abdominal area of the hindwing very sharply limited 

 distally. 



(J. Tenth tergite trnncate ; sternite rounded-dilated at end. Clasper irith 

 friction-scales ; harpe short, curved upwards at end, tip acute (PI. L. i. 40)' 

 Process of penis-sheath (PI. LVI. f. 26) obtuse at end, its dentate base 

 jirojecting also a little at the left side, the whole process boomerang-shaped ; 

 internal rods obtnse at end. 



/fa/j. British New Guinea and neighbouring islands. 



In the Triiig Museum 1 cJ, (i ? ? from : Milne Bay, Brit. N. Guinea, i. '90 

 (Meek), fi/pe ; Holnicote Bay to Owen Stanley Mts. (Rohn) ; Kiriwiui, Trobriand 

 Is., iii. iv. '95 (Meek) ; Woodlark, iii. 'OT (Meek). 



