LEPIDOPTERA HETEROCERA. 873 



South America. 



3. Lymantria rivulosa. 



Alee fuscce ; slrigis transversis undulatis pallidioribus et obscurio- 

 ribus; anticce fascia lata centrali alteraque basali badiis. 



Phalaena (Bombyx) rivulosa, Drury, App. ii. Oliv. Enc. Meth. v. 



38, 54. 

 Liparis? rivulosa, Westw, ed. Drury, ii. 28, pi. 14, f. 5. 



Surinam. 



Africa. 



4. Lymantria vacillans. 



Mas. Alba ; caput et palpi testacea, ilium subtus subroseum ; 

 antenna fuscce ; thorax antice. et apud discum subroseum ; 

 abdomen pallide testaceum ; pedes subrosei ; alee anticce macu- 

 lis fasciisque cervinis. 



Male. White. Head and palpi testaceous, the former slightly 

 rosy beneath. Antennae brown. Thorax rosy along the fore border, 

 and with a slight rosy tinge on the disk. Abdomen pale testaceous. 

 Legs tinged with rosy red. Fore wings with fawn-coloured spots 

 and incomplete undulating bands, this colour prevailing most along 

 the costa and at the tip of the discal areolet. Length of the body 

 9 lines ; of the wings 22 lines. 



a. Congo. Presented by Sir J. Richardson. 



5. Lymantria? mutata. 



Foem. Cervina; alee anticce fasciis quatuor angustis obliquis an- 

 gulosis obscure fuscis, striga subtus diffusa basali rufescente ; 

 posticce supra rufescentes fascia unafusca. 



Female. Fawn-colour, pale beneath. Fore wings with four 

 dark brown, slender, more or less oblique somewhat zigzag bands ; 

 under side with a broad diffuse reddish streak near the base. Hind 

 wings reddish above, with a single brown band, which is not far 

 from the exterior border ; under side with two bands. Length of 

 the body 10 lines ; of the wings 22 lines. 



a. Port Natal. From M. Guc^ius' collection. An injured spe- 



PART IV. 



