Collection of Madame Gatton Foamier. 85 



Cabirui Unus dodona^ Druce. 

 Cattnia dodona, Druce, Ann. Sc Mag. N'at. llht. CO) xvii. p. 218 (1890). 

 1 cJ , Ecuador. 



Cabirua Unus micha, Druce. 

 Cattnia micha, Druce, Ann. & Mag. Nat. Iliat. (6) xrii. p. 217 (1896) . 



1 J , 1 ? , Sapacaj, Paraguay. 



Cabirus Unus helieonoideSy II.-S. 



C'astnta hdiconnides, H.-S. Samml. aosfleor. Schmett. p. o6- pL zxriiL 



fig. 15 (1353). 



3 c? J , 2 ? ? , Rio de Janeiro, Brazil j 1 ? , Brazil. 



Cabirus omissus, Rotlisch. (PI. IV. fig. 3.) 

 Castnia (Cabirus) Unus omissus, Rothsch. No7. Zool. zxvi p. 24 (1919). 



When Lord Rotli-schild described this as a subspecies 

 of C. Unus, Cram., he had before him but three specimens of 

 C. Unus — two from Dutch Guiana and one \rithout locality, — 

 while all his omissus were from French and British Guiana. 

 Madame Fournier has, however, a aeries of O. Unus from 

 Frencli Guiana, taken at the same time and place as the long 

 aeries of C. omissus ; tlierefore there can be no question of 

 omissus being a local race of Unus. 



Dr. Jordan, who has been kind enough to examine the 

 types in the Triiig Museum for me, suggests that the 

 difference between Unus and omissus may be dimorphic, and 

 his examination of the genitalia resulted in finding no 

 difference between them except in the size of the penis- 

 sheath, which he states- may be due to contraction ; two 

 omissus and one Unus were examined. 



For the present I have regarded omissus sa a species; it 

 would be interesting if f/epidopterists who possess long series 

 of the southern and western races of C. Unus would carefully 

 examine them, in order to find if the omissus form occurs in 

 all localities with it ; up to the present I only find omissus 

 in Guiana and the Lower Amazon. 



Apart from the distinguishing characters given by Roth- 

 schild, the nerrules of tlie hind wing of Unus are elothed 

 with black scales — in omissus this is not so. Also in Unus 

 veins 4 and o of hind wing are well separated where emitted 

 from cell, and in omissus they are clo-se together. 



^"i 6 6 ) '5 2 , Lower 3Iaroni, French Guiana; 1 /^ , 

 Brazil ? 



