( 92 ) 



Cocytius aflSnis sp. nov. 



Forewings olive brown, variegated with olive greeu ; they are crossed by about 

 eight black nndnlated lines, two of which arc basal and one siibmarginal. The 

 latter is miu'h more wavy than the rest. Ol" the remaining live lines, wiiich cross 

 the wings at right angles to the costa, and extend from the costa to the inner 

 margin, two are situated near the outer edge of the cell and the rest midway 

 between the cell and the snbmarginal line. Besides these lines there is a black 

 undulated streak extending from the snbmarginal line between the first and second 

 nervules to the apex, and there are a number of marginal angulated spots. Some 

 of the black lines and marks are bordered with greyish buff. 



Hindtvings Ijrownish black, with a large part at the base ochre yellow. 

 Centre of the wing between the nervnles entirely transparent. Anal angle marked 

 with some grey and black streaks. 



Underaide brownish black. 



Forewings, with a large ochraceous patch behind the cell : hindwings, same as 

 above. 



Thorax black, tinged with dark olive green, and a longitudinal liluck patch 

 at each side. 



Abdomen same colour, with two black lateral lines and thiL'.- (iciinicenns yellow 

 patches on each side. 



Expanse : male, 4-2 inches = luT millim. ; female, 6-2 inches = i:-t2-G millim. 



Hah. Central America and North Venezuela. 



This species is uniformly much smaller than 6'. a/daeus, and of a juore olive 

 green colour. 



Cocytius magnificus sp. nov. 

 fPl. VII., fig. 21.) 



This species is undoubtedly the finest of the genus. It is nearest to C. walkeri 

 (Boisd.), but can be at once distinguished by the more sharply defined pattern, 

 and the bright reddish maroon of the markings, instead of dull black as in C. 

 ■walkeri. 



Forewings gallstone yellow, variegated with zigzag streaks and marks of 

 purplish maroon. From the costa run tlirei; pairs of irregular maroon streaks 

 halfway across the wing. 



Within the cell is a whitish stigma bordered with maroon, and from the cell 

 there extend towards the outer margin tlie two characteristic longitudinal stripes, 

 also bright maroon in colour, as is also the basal half of the inner margin. 



Hindwings base orange yellow, running in a streak down the abdominal 

 margin halfway to the anal angle. Central area of wings almost transparent 

 greyish brown, with ligliter mark and a yellowish patch in the anal angle. Outer 

 third of wings bright red maroon. Fringes of all wings spotted with pur))le and 

 yellow alternately. 



Head and thorax gallstone yellow, heavily margined with purple. 



Abdomen gallstone yellow, with four lines of i)aler yellow and a spot of yellow 

 on each side of every segment. 



Expanse, 6-o inches = 165-75 millim. 



Hab. British Guiana. 



