( 392 ) 



XCVII. STOLIDOPTKUA.— Typus : tarlmsnra. 

 Aleuron, Druce (<»m Boisduval, 1870), Ann. Mmj. N. II. (C). ii. p. 2:i(; (1K8«). 



(J?. Head slightly crested. Eye small, laslied. I'alims loiif?, projecting, 

 compressed, the two together acutely triaug;nlar. Antenna lung and slender, not at 

 all clubbed, hook long and gradual, end-segment short. Spines of abdomen in one 

 row, those of the steruites rather weak, flattened ; those of the posterior tergites 

 long, conical, as in Leucoikamjilia ; seventh sternite of ? small, not s])inose ; tail 

 short, obtusely triangular in S, a single narrow tnft in ?. Legs sliort-scaled. 

 Forewing irregularly lobed, apical lobe from S(J' to 11', including R', tin; first deep 

 sinus behind this vein ; distal margin of hindwing entire, costal margin enlarged, 

 when the specimen is at rest jjrojecting beyond the costal margin of the forewing 

 and enveloping" it, the lobe being rccnrved so that it lies upon the upperside of the 

 costal area of the forewing ; cell of hindwing broad, D- and D^ straiglit, oblique, R^ 

 central, R^ and M' rather close togetlier. 



c?. Sexual armature as in MuJori/x and LeucorhampliK, the harpe resembling 

 more the type found in Aleuron, but symmetrical. 



Early stages not known. 



II((b. Neotropical Region. 



One species. 



The genus is as closely allied to Aleuron as it is to LeucorJiampha and Pachi/Ua. 

 The enlarged costal marginal area of the hindwing is a jjeculiar character whicli 

 reminds one of Hj/paedalia, Amorplia populi, and Lasiocampidae. In Stolidoptera 

 the frenulum is well developed. This costal area is green on the upperside like the 

 upperside of the forewing, not black like the rest of the npperside of the hindwing. 



322. Stolidoptera tachasara. 



*Alntron tdcha.^ani Druce, I.e. (1888) (Chiriqiii ;— coll. Stnuiliiiger) ; Kiiby, Cat. Lrji. Ilil. i. 

 p. G45. n. 2 (189-2); Druce, in Bhh Cenlr. An,,,:, Ltp. Ilet. Siippl. p. m-1. d. 1 (a), t. Co. f. 7 

 ( ? ) (1896) (Orizaba ; Chiriqui). 



c??. Our Venezuelan specimens are larger than those from Panama; the 

 forewing of our largest ? measures 51 mm., of our largest c? 44 mm. 



(J. Tenth segment similar to that of Leucorhampha ornatus (PI. XLIII. f 1), 

 but the sternite and tergite not contiguous ; the lobes of the tergitc triangular, the 

 -processes of the sternite suddenly hooked at end. Clasper long ; harpe conical, 

 regularly curved upwards (PI. XLV. f. 29) ; right and left harpes the same. 

 Penis-sheath (PI. LIII. f. 22) of the type of Madori/x oieltts, the projecting 

 dorsal apical broad lobe dentate at the edge, asymmetrical. 



? . Vaginal plate large, obtusely rounded, rather strongly chitinised ; orifice in 

 a large proximal cavity ; no special armature. 



Ilab. Mexico to Venezuela. 



In the Tring Museum 5 cJcJ, 2 ? ? from : Chiriqui ; Merida (Briceno), iv. 



XCVIII. PROTALEURON gen. nov.— Typus : rhodogaster. 



(?. Head crested. Eye lashed. Palpus very large, rounded in lateral aspect, 

 first segment convex laterally at apex, second bulbous at outer apical angle as in 



