AMERICAN LEriDOPTERA. 27 



16. Syneda Stretchii, Behr. 



Prtpot'denti similis. A\se anticse fusco violacese. Linca mptliana interior ar- 

 cuata nigresoens. Sequitur spatium fasciiforme osseum. Roliquum spatium 

 medianuni violaceum lineis saturatioribus parallelis tribus perfluum. Macula 

 extraccllularis aiiipla reniformis ossea, in spatium saturate violaceo brunneum 

 interdum interruptuni et in maeulas solutum immersa. Linea submarginalis 

 p.arum distincta. Limbus fusco violaceus. Alse posticre aurantiacfie, signaturis 

 nigrisut in prrecedente instructse. Subtus aire anticse fulvae per umbram nigrara 

 obliquam divisse, ultra umbram nonnullis maculis et lineis nigris irregularibus 

 signatse. Posticae fere ut supra. 



Three specimens from Virginia City. Collected by Mr. Stretch. 



17. Syneda Socia, Behr. 



Pra'cedfuti i^imilis, sed diflertin alis anticis macula extracellular! dentinosa, 

 in alis posticis, per lineam discoidalem utrinque in fasciam productam, qu£e 

 supra attingitad marginem anticam, et infra cum fascia ordinaria unitur. Sub- 

 tus alc'e omnes fulvre. Anticre per umbram nigram dimidiatte, ad marginem 

 exteriorem adumbratse, macula triquetra prope apicem e costa orta et macula 

 limbali prope angulum posticum nigris signatse. Posticse fere ut supra signatae, 

 Bed linea costali minus producta et dilutiori. 



One specimen from Ft. Tejon. Notwithstanding that only one spe- 

 cimen can be inspected, th5 difference of the upper side is strikino- 

 enough and is confirmed by the entirely different under side, so that 

 I consider myself justified in describing it as a new species. 



18. Syneda Adumbrata, Behr. 



Aire anticfo fusco violacese. Spatium basilare saturatius, medianum dilutius. 

 Umbra triquetra occupat spatium inter lineam medianam externam et submar- 

 ginalem et amplectitur niaculam dilutiorem amplara bidentatam. Alje posticce 

 a basi ad mediam alam luteee, macula diseali crassa nigra signatw. Dum ad 

 marginem nigrse fascia lutea undulata interruptre. Subtus alfe omnes luteae. 

 Limbus et fascia submarginalis nigrre, macula discalis nigra in anticis in fas- 

 ciam obliquam producta. 



Three specimens from Downieville. « 



This and the following species approach very nearly to >S'. graphica 

 Gn., with which the one or the other might be identical. The figure 

 of S. grnphicd as given in the Atlas of Guonees Xoctuelites, is deci- 

 dedly different from bath, as the hindwings of this Sijneda are repre- 

 sented as being nearly all yellow and only marked by a few black spots. 

 But that figure, strange enough, docs not agree with Guenee's descrip- 

 tion, which conies much nearer to <S'. Athnnhra fa, or the following Di- 

 vergena. As it is difficult to settle the (juestion here in San Francisco, 

 I consider it expedient to describe and name both species and not to 

 complicate matters by enumerating a species of whose habitat, in Cali- 

 fornia, I still entertain doubts. 



19. Syneda Divergens, Behr. 



Duo speciiiiina, (pue illustr. Whitney Geol. Surv. Conductor benevole mecum 

 communicavit, a sjiecie prajcedente dillerrc videntur linea mcdiana interna di- 



