inches for the entire expanse of the wings including the 

 width of the thorax.) Greatest width of anterior wing 40, 

 least width 9 at the base, and 29 mms. at 2-3rds of the 

 wing length from the base ; length of hind wing 57, and 

 width 40 mms. ; length of thorax with head 21, of 

 abdomen 33, and of antennae 23 mms. 



■r ,1 ] 1st pair : femur 11 ; tibia g; tarsi, 9 mms. 



r ,5 [ 2nd „ ,, 13; ,, 12; ,, 10 ,, 



01 lees : j ' J ' " " 



J 3 rd >) » 11; >. !3 ; .» IO » 



Articulations of Antennae about 40. 



Length of costa of example figured on PI. III., 

 104 mms. 



In the museum of The Hon. W. Rothschild. 



Dairy's figure of this species was drawn by Moses 

 Harris ; but a more successful one had previously been 

 made from the same example by Donovan's artist, Jones. 

 From these all the drawings in the works quoted at the 

 head of this article were copied. 



S . The following descriptive note by Mr. W. Watkins 

 was published in the Ent. Monthly Magazine in 1892 : 



" Fore wings rounded on outer margin instead of con- 

 cave. Also much less clothed with scales, and approach 

 a semi-diaphanous condition. Anal segment exactly the 

 same as in Ornithoptera, the $ 's having a horny clasp- 

 ing terminal, whilst the 2 is simple and thickly pubescent. 

 In the collection, with a dark <? taken at the same time, 

 of Herbert J. Adams, F.E.S., England, " Hab. Gaboon." 



In the example which I have figured on Plate II. of 

 this work the 2 is much smaller than the <? , though I 

 have seen a $ nearly as small ; the posterior margin is 

 somewhat concave ; on the upper surface the pattern of the 

 posterior wing is nearly a repetition of that in the S ; the 



marks and colours of the anterior wing are relatively in the 

 same position, and of the same colour, though generally 

 differing more or less in shape ; the wing is also almost 

 semi-diaphanous, giving it a slightly greasy appearance 

 in some positions of light ; the markings on the under- 

 side correspond generally with those of the upper surface, 

 and are a smaller rendering of the $ pattern ; the costa 

 is buff yellow partly from the base, but of a redder 

 tint than in the $ . The abdomen also is slightly 

 redder buff, but with a similar dorsal dark longitudinal 

 stripe. The colours, number of spots and other details 

 of the thorax and head similar to those of the <? . For 

 the true structure of the anal segments see PL III., 

 and also the diagnosis of the genus. 



Length of Costa, 72 mms ; of thorax with head, 

 15 mms. ; of abdomen, 26 mms. ; of antennas, 22 mms. ; 

 the legs, all but one mesothoracic, are missing, of that the 

 femur is 1 1, the tibia 21, and the tarsi 8 mms. Number 

 of antennal articulations about 40. Hab. uncertain, as there 

 is no label attached to the specimen. The superficial 

 appearance of this insect on both surfaces is absolutely 

 that of a large Acrsea. 



In the museum of the Hon. Walter Rothschild, whom 

 I heartily thank for the pleasure of figuring this female 

 and the two splendid examples of the 3 . 



Of the flight of Antimachus Henry Smeathman says 

 "this species flies in the heat of the day with amazing 

 rapidity, seldom descending to within 8 feet of the 

 ground. It glances from the prominent branches of one 

 tree to those of another, as swift as a swallow, and turns 

 its head about instantly to the glade or path, and will not 

 suffer any person to approach within a striking distance 

 of it, but darts away on the least motion of the body. At 

 length, if the Naturalist is patient it becomes more care- 

 less." Mr. Rogers and others give a similar testimony : 

 Rogers's first specimen cost him 3 days of patient watching 

 before he effected its capture. 



