10 LEPIDOPTERA HETEKOCERA. 



degree less straight than those of N. Lunus. Length of the body 

 9 — 1 1 lines ; of the wings 38 — 40 lines. 



a. ? Presented by E. Doubleday, Esq. 



b. St. Domingo. From Mr. Cuming's collection. 



6. Nyctalemon ? Lavinia. 



Alee caudatce, nigra, viridi fasciatce, subtus aryentatce, strigis 

 fulvis. 



Papilio Lavinia, Fabr. Ent. Syst. iii. I, 22, 64. 



Corpus nigrum palpis albis. Alae anticae dentatae, nigrae, 

 fascia e maculis quinque oblongis viridibus. Maculae ties minores 

 virides intra fasciam et marginem crassiorem, subtus albo, fulvo ar- 

 genteoque variegatae litura atra ad marginem crassiorem, in qua 

 lineola alba, bifida caeruleaque flexuosa. Alae posticae caudatae, ni- 

 grae, fascia baseos integra et posteriore e maculis septem viridibus. 

 Angulus ani fulvus. Subtus argentatae strigis tribus fulvus. Fascia 

 alba in medio alae. Margo posticus fulvus terminatur striga tenuis- 

 sima, alba. 



Papilio ? 



America. 



Tribe 4. CASTNII. 



Antennae simplices, apud medium vel apice plus minusve 

 incrassatae. Proboscis valde distincta. Palpi valde extantes, articu- 

 lis semper bene determinatis.; 



Castnii (Agaristites et Castnites), Blanchard, Hist. Nat. Ins. ii. 349, 



350. C/ienu, Enc. d'Hist. Nat. Pap. 232. 

 Sphingides, p., Lair. 

 Zygaenides, p., Latr. 

 Hesperi-Sphinges, Latr. 

 Agaristidae et Castniadae, Sipainson. 

 Agaristides, Boisd. 

 Agaristiadae, Harris. 

 Zygaenidae, p., Kirby. 



The Castnii, like many other small tribes, are much more 

 diversified in structure than the large groups which they connect. 

 Some resemble the Hesperidae, others the Nymphalidae or the 

 Heliconii, or the Noctuidae, while several are hardly distinguishable 



