Mr. A. G. Butler on a new Species o/Thei'itas. 2G 7 



XXXIII. — On a new Species of the Theclid Genus Theritas 

 ■from Golomhia. Bj ARTHUR G. Butler, F.L.S., F.Z.S., 

 &c. 



The following species was brought to the Museum for identi- 

 fication by Mr. and Mrs. Alfred E. Oakes, by whom it has 

 been generously presented to the National Collection. I 

 therefore propose to give it the name of T. Oakesii. 



Theritas Oakesii ^ sp. n. 



Allied to T. ducal is and T. actmon^ but markedly different 

 from both. Primaries above with the basi-internal half 

 greenish Morplio-\Ay\& ; externo-costal half velvety blue-black ; 

 fringe slaty grey : secondaries of the same blue as the basal 

 half of primaries, but golden green at anal angle ; abdominal 

 border lilacine grey ; external margin and costa rather broadly 

 bordered with black from near the base of costal margin to the 

 second median branch, at which point the inner tail is emitted; 

 the outer or anal tail is emitted from a prolongation of the 

 wing between the first median and submedian veins, and is 

 fully one third longer than the inner tail ; both are black and 

 continuous with a well-defined black marginal line ; the 

 fringes of the outer margin and tails steel-blue. Head above 

 golden, the antenna and distal half of palpi black, front 

 margin of thorax opaline ; remainder of body bright morpho- 

 blue. Primaries below lilacine grey^ the apical and costal 

 areas densely irrorated with golden-green scales upon a dark 

 brown ground ; a narrow black marginal line ; fringe steel- 

 grey : secondaries golden green at base and towards internal 

 and external margins, becoming almost cupreous on the disk, 

 tliis colour passing gradually into purplish rose over the sub- 

 basal area from the end of the cell almost to the base itself ; 

 tails, marginal line, and fringe as above; two subparallel black 

 stripes above the anal angle, the upper ones curving inwards 

 to the abdominal border, the lower angulated, bordering the 

 anal sinus and continuous with the outer tail ; the remainder 

 of the wing, excepting at outer margin, covered with short, 

 thick, black strigas : legs black and opaline. Expanse of 

 wings 40 millim. 



Caught at the village of Malpaso (Tolima) in (Colombia, 

 South America. 



