( 392 ) 



XCVII. STOLIDOPTERA.— Typiis : taclmmra. 

 Aleiirnii, Druce {nnn Boisduval, 1870), Ami. Mikj. N. H. ((i). ii. p. 230 (1888). 



(? ? . Head slightly crested. Eye small, lashed. Palpns long, projecting, 

 compressed, the two together acutely triangnlar. Antenna long and slender, not at 

 all clubbed, hook long and gradual, cnd-segmt'ut short. Spines of abdomen in one 

 row, those of the sternites rather weak, flattened ; those of the jwsterior tergites 

 long, conical, as in Leucorhumplia ; seventh steruite of ? small, not spiuose ; tail 

 short, obtusely triangular in J, a single narrow tuft in ?. Legs short-scaled. 

 Forewing irregularly lobed, apical lobe from SC* to R', including R', the first dee]) 

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

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

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

 costal area of the forewing ; cell of hindwing broad, D* and D' straight, oblique, R' 

 central, R^ and M' rather close together. 



(?. Sexual armature as in Mmlonjx and Leucorhamphu, the harpe resembling 

 more the type found in Aleuron, but symmetrical. 



Early stages not known. 



llab. Neotropical Region. 



One species. 



The genus is as closely allied to Alcitron&a it is to Lcworliampha and PachijUa. 

 The enlarged costal marginal area of the hindwing is a peculiar character which 

 reminds one of Ih/pacdulia, Ainorpha populi, and Lusiocampidae. In Stolidopteni 

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

 upperside of the furewing, not black like the rest of the n])perside of the hindwing. 



322. Stolidoptera tachasara. 



*Alcuriiii tii(!i(istirii Druce, I.e. (1888) (Chiriqui ; — coll. Staudinger) ; Kirby, Cut. Lrji. 1/el. i. 

 p. C45. n. 2 (1892); Druce, in BhI. Chilr. A ma:, Lep. lift. !<tijijil. p. 302. n. 1 (a), t. 65. t 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 cJ 44 mm. 



<S. Tenth segment similar to that of Lei/cor/iamp/m ornatus (PI. XLIII. f. 1), 

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

 ])rocesses of tiie sternite suddenly hooked at end. Clasi)er long ; harpe conical, 

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

 Penis-sheath (PI. Llll. f. 22) of the type of Madori/x oiclus, 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. 



Hab. Mexico to Venezuela. 



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



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



(?. Head crested. Eye lashed. Palj)ns very large, rounded in lateral aspect, 

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



