80 EXOTIC MICROLBPIDOPTERA. 



dark fuscous or dark ?;re5- spot in disc at | (second discal stigma), 

 closely followed by a similar or somewhat larger spot sometimes 

 confluent with it, and a small subtriangular spot on termon beneath 

 apex opposite these ; apical area above these niarkinga forming a 

 clear whitish blotch, its costal edge marked by a fine black line 

 edged internally with pale yellow-ochreous ; a slight dark fuscous 

 mark from tornus : cilia whitish mixed with grey, with dark grey 

 median line. Hindwings and cilia grey. 



British Guiana, Mallali, in March {Parish); fifteen specimens. 



Choropleca isodisca, n, sp. 



S $ . 7-8 mm. Head white, mixed w ith dark fuscous. Palpi 

 white marked with black. Antennte white ringed with dark grey, 

 on apical half with four dark bands, basal joint white with two 

 black marks. Thorax white mixed with grey and dark fuscous. 

 Abdomen grey, beneath whitish-ochreous. Forewiugs elongate, 

 costa gently arched, apex rounded-obtuse, termen rounded, oblique ; 

 ochreous-whitish suffusedly irrorated with grey ; a fine irregular 

 transverse whitish line very near base ; two indistinct irregular 

 somewhat curved whitish transverse lines towards base ; costa 

 black from these to middle, cut before middle by two oblique Avhite 

 strigulse, whence faint irregular whitish lines run to dorsum before 

 middle ; a narrow elongate black blotch extending along costa from 

 middle to 4, cut by an oblique white strigula at g, its lower edge 

 with a trapezoidal blackish lobe reaching half across wing ; beyond 

 this the apical area forms a clear ochreous-whitish blotch edged 

 marginally by a fine black line suftused internally with pale yellow- 

 ochreous ; some slight dark fuscous marking above tornus : cilia 

 whitish mixed with grey, on costa with a median line of dark 

 fuscous irroration, on termen with three basal dark fuscous spots 

 or bars. Hindwings and cilia grey. 



British Guiana, Bartica and Mallali, in February and March 

 {Parish) ; four specimens. Very similar to acrodisca, but termen 

 of forewings more oblique, and readily separated by absence of dark 

 fuscous subapical spot. 



J Choropleca catorthota, u. sp. 



c? . 7 mm. Head whitish mixed with fuscous. Palpi fuscous- 

 Avhitish, second and terminal joints each with a dark fuscous band, 

 ai)ex white. Antenna) dark grey dotted with whitish, apical half 

 with three dark fuscous bands. Thorax fuscous mixed with 

 whitish. Abdomen dark grey. Forewings elongate, costa gently 

 arched, apex obtuse, termen obliquely rounded ; grey tinged with 

 ochreous, slightly sprinkled with whitish and dark fuscous ; a pair 

 of nearly straight transverse whitish lines at i ; a pair of more 

 indistinct and irregular similar lines about middle, not forming 

 oblique strigula? on costa ; anterior half of costa suffused with dark 

 fuscous between these markings; a suffused narrow elongate dark 



