INSECUTOR INSCITI^ MENSTRUUS 13 



sp.) is probably only an accidental food plant, for larvse in 

 cages at once deserted it for orange foliage. 



It is of interest to note that the synonymy of Ecpantheria 

 eridanus Cram, and E. icasia Cr. has been substantiated by 

 breeding both forms from the same egg cluster at Mayaguez. 

 Dr. H. G. Dyar had previously expressed the opinion to the 

 late Dr. C. W. Hooker of the Mayaguez Station that the two 

 species were the two sexes of one insect, eridanus being known 

 only in the female and icasia only in the male form. Fabricius 

 in 1798 (?) described the synonymous Ecpantheria lantana, 

 but whether from male or female the writer does not know. 



Description of Adult 



Male. — Antennae with short serrations formed by slightly 

 curved bars attached transversely by their centers to the under- 

 side of the flagellum. The ends of these serrations with a 

 clothing of fine white pile which is more dense on the ends 

 farther from the body. Face brown irregularly marked 

 with white; eyes black. A pair of steel blue circular 

 markings on the rear of the thorax, dorsal. Abdomen with 

 long white hairs on first segment and on dorsum of second 

 segment ; other abdominal segments on dorsum and sides vary- 

 ing in color from light orange to reddish-brown; usually a 

 pair of subdorsal transverse black lines on all segments but 

 the first two. Clothing of white hairs on lower part of last 

 segment. Ventral coloration generally white, with occasional 

 orange on abdominal segments. Femora white edged with 

 steel-blue ; tarsi steel-blue to brown. 



Primaries white with five irregularly curving rows of dark 

 brown loops running transversely across the wing and vary- 

 ing considerably in position. Generally these rows are ap- 

 proximately equidistant, the first row always near the base 

 of the wing. Often, however, the other four may be crowded 

 on the apical two-thirds of the wing. Hind wings 

 white with two, and sometimes three, rows of fuscous spots 

 running backward from the costa for a short distance. Anal 

 angle of the secondaries drawn out, and bearing a fuscous spot 



