3 — 



Genus Cyphononyx Dahlb. 



1 . Tibiae anticae stq)ra spinosae. Tarsi antici 

 extiis spinis 7—8 longiuscnlis, pedinati. Tibiae et 

 metatarsi postici spinis longiortbus remotis armati. 



2. Ungues tarsoriim antieorum fnrcati; Uli 

 tarsorum reliquorum indivisi, sed dente armati 



Heteronyx. 



2, 2. Ungues tarsorum omnium fnrcati (ramo 

 infero truncate) Schistonyx. 



1.1. Tibiae anticae supra inermes. Tarsi antici 

 spinis brevibus appressis instruct!. Tibiae et meta- 

 tarsi positci spinis breviusculis, numerosis, in serie- 

 bus infiris, armati. Ungues omnes fnrcati fut in 

 G. Schistong.c. Cyphononyx Dahlb. 



2. Tibiae posticae serrulatae. Cyphononyx D. 



2.2. Tibiae posticae integrae. Diplonyx n. 



1. Heteronyx niadecassLis, n. Niger, haud puncta- 

 tus : antennis, tibiis tarsisque ferrugineis; capite 

 etthorace rufo-nigris, sericante-velutinis ; metanoto 

 nee tuberculato nee strigato ; tibiis sparse spinosis, 

 calcaribus longissimis ; alis rufo-aurantiis, apice 

 et posticis retro nigro-limbatis. p long. 18 mm. 



2. Schistonyx insularis, n. Niger, cinereo-hirtellus ; 

 post-scutello compressa ; metanoto convexo, nee 

 strigato, nee bituberculato, nee trimcato; abdomine 

 fusiformi, nitido ; pedibus sat fortiter spinosis ; 

 alis hyalinis, apice griseo-marginutis ; areola 

 cubitali 2'- quam tertia major, venam recurr. 

 1-am in medio margine excipiente; 3a ar. cub. 

 minore, venam recurr. 2-am ultra medium ex- 

 cipiente. p 10—14 myn. 



•^- Schistonyx velutinus, n. — Ater, veliitinus ; ver- 

 tice compressa; ocellis in declivitate frontis ex- 

 sertis ; scutello superne planato, metathorace trim- 

 cato, nee tuberculato, nee strigato; abdomine 

 sessili, hasi rotundato; pedibus arcte spinosis; 

 alarum areola radiali acute truncato-acuminata ; 

 areolis cubitalibus 2a et Ha minoribus, subac- 

 qualibus,symetricis,venasrecurrentesultramediam 

 partem excipientibus. p long. 15 mm. 



4. Cyphononyx Grandidieri, n. — Nigro-violaceus., 

 antennis aurantiis, scapo, capite, prothorace, 

 mesonoto, scutello pedibusque anticis obscurc- 

 ferrugineis: pronoti margine utrinquc transverse 



rottmdato-margincdn, vel angulis subtidierculatis : 

 mefidliorace valde strigato, utrinquc carinato, basi 

 bituberculato; tibiis posticis crenato-serr(dis: loi- 

 guilms vi.r arruafis : alis nigro-riolarcis. p long. 

 21 mm. 



")■ Diplonyx dolosus, n. — Gracilis, thorace sub- 

 compresso; mesonoto utrinquc devato-marginuto, 

 post-scutello tubercidato; metanoto conve.ro, basi 

 bitiiberculcdo, lärinquc subcanaliculato et arcuato- 

 carinato, valde transverse strigato; antennis 

 aurantiis: capite tJtoraceque antice obscure rufis, 

 thorace, postice pedibusque nigro-cyaneis ; pedibus 

 anticis rufis ; tibiis posticis minute spinulosis ; 

 abdomine nigro-cyaneo : alis ferrugineis; p ç^ 

 long. 12 — 18 mm. 



6. Diplonyx campanulatus, n. — Niger, gracdis, 

 nigro-pilosus; antennis aurantiis, thorace com- 

 pressa, post-scutello compresso-tubercidato; me- 

 tanoto conve.riusculo, vir truncato, bit über culcdo, 

 tantum apice strigato; abdomine gracili, lo seg- 

 menta infundibiliformi ; tibiis posticis compressis, 

 seriatim spinulosis; (dis fusco-ferrugineis ; cyanes- 

 centibus margine apicali nigro-cyaneo. d long. 



i:i mm. 



(à suivre.) 



Note of the Genus Cressoiiia. 



Bij .löhn B. Smith. 



This term was created by Messrs Grote and 

 Robinson for the Sphinx juglandis of Smith and 

 Abbot, in the Proceedings of the Entomological 

 society of Philadelphia V. 186, and the venation 

 was figured and compared with that of Smerinthus 

 geminatus, from which it does not materially differ 

 in this respect. The antennae are said to be 

 „doubly bipectinated" in the cf, simple in the p . 

 This character is deversing of further notice, and 

 is J believe, unique in the american Sphinges. 

 It is only paralleled in our fauna in the Satur- 

 niidae. SmcrintJms geminatus has the antennae 

 bipectinated in the male, a single branch to each 

 side, resembling in this character many of the 

 Bombycids and like thein having the branches 

 ciliate. In Cressonia (j each joint has two branches 

 to each side of each joint as in Saturnia, the 

 branches also ciliate. In fact it would be difficult 

 to distinguish the antennae of Cressonia from that 

 of Saturnia. Another character proving the strong 

 Bombycid affinities of this genus is found in the 

 frcnelum which is wanting in the C nnd vciv 

 murli reduced in size in the ni;ile. 



