1945] Notes on Neotropical Plebejince 19 
vesical aperture; uncus a shade slighter than in ammon\ comb 
greatly developed: first tooth hypertrophied, four times longer 
than in dominica , two and a half times longer than in ammon 
and twice longer than in woodruffi ; second tooth about a third 
of the first (the rest as in ammon with same number of teeth 
as in that species and dominica ) . 
Measurements (in mm.): sedeagus 0.68-0.72, suprazonal 
sheath 0.22-0.27, subzonal 0.45-0.46, with breadth (in lat- 
eral view) 0,11; penis mean 0.63. Furca mean 0.38. Sagum 
mean 0.43. Vertical/Horizontal extension of uncus: forearm 
0.14/0.03-0.17/0.035, humerulus 0,045/0,12-0.06/0.14, shoul- 
der 0.1/0.05-0.14/0.06, lobe 0.2/0.05-0.21/0.06. Valve 0.64- 
0.75 with breadth 0.35-0.4; comb; breadth 0.2; first and second 
tooth: length (measured as in the three other species) 0.07 
(0.06-0.08) and 0.022 (0.02-0.028). 
No subspecific structural distinctions are noticeable and any- 
way the wing-characters on which the subspecific names have 
been based must be revised as the comparisons were drawn 
between non-conspecific forms. 
The catochrysopoid wing-characters of the Hemiargus-Echin- 
argus-Chilades-Cyclargus-Pseudochrysops macroscopical group 1 
in Plebejince are perhaps most beautifully expressed in the hind- 
wing underside of Cyclargus. These combinational characters 
are in this genus: the conspicuously strong pigmentation of 
macules Sell, ScIII, Cu 2 III, 2 2AII, IIM and lateral macule in 
4A (placed in corbie arrangement if viewed from base and strik- 
ingly resembling the African Euchrysops group) and of the 
Cu l7 Cu 2 and 1A prseterminal marks (with scintillse), in contrast 
to the extreme weakness of all other whole and split macules; 
(2) the ornamental concentration of an aurora in CUi in contrast 
to the whiteness of all the other I intervals; (3) the subtrian- 
gular shape of these intervals and of the faint portions of I 
macules (both wings) ; (4) the rough quadrate shape of certain 
macules in the disc (both wings); (5) the strong development 
of halos, cretules and white scales intermixed with the ground 
1 The only other Plebejinae having certain catochrysopoid wing-characters (of 
another type) are: the central Asiatic Agrodicetus elvira Eversmann (which de- 
parts in an extraordinary way from the pattern of its numerous congeners) and 
the nearctic alpine Icaricia shasta Edwards (two characters). 
2 Absent in ammon ammon as correctly noted by Comstock and Huntington 
1943 op. cit. : 96 where, however, there is a clerical error in the notation of the 
position of the macule in question. 
