SATYRINAE : OENEIS SEMIDEA. 



137 



Abdomen covered witli dust Ijrowii scales and blaekisli liairs, tlie latter conspicuous 

 above only near the base. Centrum of superior male aijpenda.sres (33 : 4) forming? with 

 the upper surface of the bod3^ and the hook a nearly regular curve, depressed at their 

 junction, the iiinder edge of the hook scarcely arcuate in the same sense as the upper 

 surface, so that the hook tapers regularly toward the tip and is fully four times as 

 long as l)road ; lateral appendages very slender, scarcely moi-e than half as long as the 

 hook; clasps having the apical fourth ecjual, the tip broadly rounded, its upper half, 

 as well as the apical half of the upper edge, furnished with numerous, equal, minute 

 denticulations, directed backward and upward. 



Described from 30 cf 24 ?. 



Malformations. I have seen one specimen in which two of the joints in the middle 

 of the antennal club are completely connate on the upper inner half so as to show no 

 trace of a suture, while l)eneath the division is as distinct as usual; it is also broader 

 beneath than above, and the termination of the suture is quite abrupt. 



A male in my possession exhibits a supernumerary uervule crossing the middle of the 

 upper two-thirds of the upper median interspace on one of the f ore-Avings ; it is very 

 distinct and the nervules above and below bend toward it a very little ; it is slightly 

 obscured by blackish scales, although markings are not to be expected at that point. 



Secondary sexual distinctions. Androconia (46 :1) tapering regularly to the apical 

 thread, which occuj)ies a full third of the whole; apical threadlets scarcely expand- 

 ing. Extreme length of whole, .2C, mm; l^asal breadth .022 mm. 



Egg (64 : 8). Distinctly higher than broad, the base being full, the ribs pretty regu- 

 larly rounded and destitute of distinct lateral corrugations, traversed transversely bj' 

 scarcely perceptible delicately impressed lines, the granulations of the base resembling 

 broken parts of the ribs ; the latter about 26-30 in number, of Avhich about 15-17 reach 

 the sumuiit ; distant apart on an average . 1 mm. , the transverse lines in the middle of 

 the egg 0.025 mm. ; surface covered with excessively minute punctulations. Color a 

 very pale, almost colorless straw yellow, changing after a time to a steel gray and 

 shortly before hatching to lavender. Micropyle not at all depressed but exceedingly 

 delicate, the outer cells very faintly detined, transverse outwardly, nearly regular 

 toward the centre, averaging about .01»;5 mm. in diameter; micropyle centre .03 mm. 

 in diameter, being a thinner yellow circle divided into several radiating cells. Height 

 of egg 1.1 mm. ; breadth .95 mm. 



Caterpillar. First star/e. — (70 : 5 ; 74 : 7). Head (78 : 6) pale yellowish broAvn, mi- 

 nutely and not profusely dotted with broAvu (later, dark brown) , the sutures with a 

 ferruginous tinge ; mouth parts of the color of the head, the ocelli blackish. Body 

 pale yellowish fuliginous (too light iu the plate) the stripes brownish fuliginous, the 

 dorsal stripe slenderer and nuich less conspicuous than in O. jutta; some days after birth 

 the body is dark brown with a slight tinge of olive green, the stripes fuscous, the last 

 segment pale broAvn. All hairs and other dermal appendages pellucid on blackish 

 papillae ; skin with a fuscous granulation. Last segment terminating on either side in 

 a truncate plate, the truncation slightly oblique and furnished at either angle with a 

 haired pai)illa. .Vnal prolegs excessively large. Legs and prolegs of the color of the 

 body; spiracles black. Length 2.5mm.; breadth of head .64 mm.; length of club- 

 shaped hairs of body .01 mm. 



Fourth statje. (74 :1). Head (78 -.1) very pale fuliginous with a faint greenish tinge, 

 the bottom of many of the large punctures black, and these arranged so as to form 

 apparent bands having a broAvnish aspect iu the position of the actual bands of the 



