82 HETEROCERA. 
1. Philoros rubriceps. 
Ctenucha (Philoros) rubriceps, Walk. Cat. ii. p. 283°. 
Philoros rubriceps, Butl. Journ. Linn. Soc., Zool. xii. p. 429. 
Hab. Mexico, Jalapa (Hége); Guatemaa, Duefias, Purula, San Gerénimo (Champion). 
—CoLoMBIA!; VENEZUELA 1. 
2. Philoros venosa. 
Ctenucha (Philoros) venosa, Walk. Cat. i. p. 284°. 
Ctenucha venosa, Stretch, Zygeenide et Bombycide North America, p. 31, t. 1. f. 10°; Boisd. Lép. 
Guat. p. 83°. 
Philoros venosa, But]. Journ. Linn. Soc., Zool. xu. p. 429. 
Hab. Nortu America, Texas 2, Arizona (Morrison, mus. D.).—MeExico !3, Milpas 5900 
feet (Forrer) ; Guatemaia, San Joaquin, Quiche Mountains 9000 feet, San Gerdénimo 
(Champion); Honpuras?; Costa Rica (Boucard, mus. D.), Irazu 7000 feet (Rogers) ; 
Panama, Volcan de Chiriqui (27bbe), Bugaba (Champion).—Ecuapor (mus. D.); VENE- 
ZUELA}. 
This common species is very variable: in some specimens the streaks on the primaries 
are dark orange-yellow, from which they vary to pale yellowish white; in others the 
pale marks vary much in width. 
3. Philoros ruficeps. (Tab. IX. fig. 8.) 
Ctenucha (Philoros) ruficeps, Walk. Cat. ii. p. 284°. 
Philoros ruficeps, Butl. Journ. Linn. Soc., Zool. xii. p. 429. 
Ctenucha opaca, Boisd. Lép. Guat. p. 84’. 
Hab. Mexico! (mus. Staudinger); GuarTuMaLa?; HonpDuRAS ?. 
The figure is from Dr. Staudinger’s specimen, which agrees well with Walker’s type 
in the British Museum. 
CTENUCHA. 
Cienucha, Kirby, Fauna-Bor. Amer. iv. p. 305. 
This genus is most thoroughly described by Dr. Packard in his “ Notes on the Family 
Zygenide ” (Proc. Essex Inst. iv. p. 33). 
The species placed under this genus by Boisduval in his Lepidoptera of Guatemala 
do not belong to it. 
1. Ctenucha robinsoni. 
Ctenucha robinsonii, Boisd. Lép. Calif. p. 71. 
Hab. Mexico, Sonora. 
This species is unknown to me. 
