1598 CATALOGUE OF 
Genus SERYDA. 
_. Mas. Corpus gracillimum. Proboscis mediocriter longa. 
Palpi brevissimi. Antenne mediocriter pectivate, corpore vix bre- 
viores. Abdomen alas posticas dimidio superans; latera apice fas- 
ciculata. Pedes gracillimi; tibiz postice calcaribus minutis apica- 
libus. Ale anguste, ciliate. 
Male. Allied, to Procris. Body very slender. - ‘ Proboscis 
moderately long. Palpi very short. Antenne nearly as long as 
the body, moderately pectinated. Abdomen tufted on each side at 
the tip, extending for full half its length beyond the hind wings. 
Legs very slender; hind tibie with minute apical spurs. Wings 
narrow, ciliated,- Fore wings with the first and second inferior veins 
springing from a common petiole; third remote, 
1. SERYDA CINCTA. 
Mas.  Cyaneo-nigra ; ale antice apud costam recte, apice rotun- 
date, margine exteriore perobliquo ; abdominis dimidium ba-~ 
sale coccineum. | 
Male. Black, tinged with blue Fore wings straight in front, 
rounded at the tips, extremely oblique along the exterior border. 
Abdomen crimson for half the length from the tip. Length of the 
body 2 lines; of the wings 6 lines. 
Valley of the Amazon. In Mr. Saunders’ collection. 
Genus APERLA. 
Fem. Corpus gracillimum. Proboscis mediocriter longa. 
-Palpi porrecti, graciles, sat longi; articulus 3us parvus. Antenne 
setacee, valid, subpectinate, corpore paullo breviores. Abdomen 
alas posticas longe superans. Pedes sat validi; tibiew postice cal- 
caribus quatuorlongis. Ale peranguste, ciliate; antice apud cos- 
tam recte, apice rotundate, margine exteriore perobliquo. __ 
Allied to Procris. Female.—Body very slender. Proboscis 
moderately long. Palpi porrect, straight, slender, moderately long ; 
third joint small. Antenne setaceous, rather stout, minutely and 
thickly pectinated, about three-fonrths of the length of the body. 
Abdomen extending for full three-fourths of its length beyond the 
hind wings. Legs rather stout; hind tibiz with four long spurs. 
Wings very narrow, ciliated. Fore wings straight in front, rounded 
at the tips, very oblique along the exterior border. 
