180 ENTOMOLOGICAL SOCIETY 



Serpentine bar joined to base agassixn"Robs.' 



A long bar on internal margin gillettcana Dyar. ^ 



This bar on lower median field. 



Bar from internal margin near base returning to 



margin near anal angle serpentana Wals. * 



Bar along median fold to near anal angle, then up 

 ward along outer margin to near apex optimana DyarX 



I fail to find any character in the description to separate fer- 

 naldana Grt. from ridingsana Robs. On the other hand, 

 robinsonana Grt. and quinquemaculana Robs., united by Prof. 

 Fernald, seem separable, though I have no specimens corre 

 sponding to the figure of the latter. 



My seven specimens of ragonoti Wals., all from Glenwood 

 Springs, Colo. (Dr. Barnes), have the two basal spots united into 

 a solid, somewhat dumbbell-shaped bar. This may be called 

 var. barnesiana. 



Eucosma optimana n. sp. 



Of the size of crambitana. Light brown, head and patagia nearly 

 white. Fore wing with silvery white marks as follows : A basal costal 

 spot (absent in the male, owing to the costal fold); a long middle costal 

 dash, obsoletely broken and at the end reaching down in an oblique bar 

 enclosing a little spot of ground color on costa ; a little spot beyond and 

 an oblique bar just before apex, reversed in direction to the first oblique 

 bar; median bar reaching two-thirds of wing from base, constricted cen 

 trally, roundedly lanceolate; beyond it a short, oblique bar on disk, below 

 and opposite to the first costal bar; a long streak on submedian fold, be 

 ginning one-fourth from base, rounding up at anal angle parallel to outer 

 margin almost to apex ; a long bar above inner margin, the margin itself 

 brown ; a small basal spot below the median bar. Hind wing pale brown 

 ish, fringe lighter. Expanse 31 mm. 



Type. No. 6744, U. S. National Museum. 

 cf , Glenwood Springs, Colorado, October 1-7 (Dr. William 

 Barnes); ?, Eagle Co., Colorado (Prof. T. D. A. Cockerell). 



Dr. Dyar showed also Volume VII, Number i, of "The 

 Insect World," the entomological magazine published in Japa 

 nese by Y. Nawa, which contains a colored plate of a moth and 

 larva parasitic upon FulgoridaB. He said that this was of special 

 interest in connection with the species found by Messrs. Schwarz 

 and Barber in New Mexico, and which has recently been described 

 before this Society as Epipyrops barberiana. Mr. Nawa's moth 



