DESCRIPTIONS OF INDIAN MICRO-LEPIDOPTERA. 167 



Tonka, Walk. 



This generic name supersedes Binsitta, Walk. 



Tonica niviferana, Walk. 



Peradeniya, Ceylon ; Karwar, Bombay, Calcutta, Sikkim. The pupa of this 

 and the nest species stands erect on its tail, and imitates the head of a small 

 snake (Maxwell). 



Tonica teratella, Walk. 



{Tonica terasella (prav. form.), Walk., Cat. XXIX., 788.) 



Karwar (Maxwell) ; Sikkim ; in July. Also from Borneo. 



Tonica zizyphi, Staint. 



(Depressaria zizyphi, Staint, Trans. Ent. Soc., Lond, (n.s.), V., 115 ; D. angusta 

 Wals., Moore, Lep. Ceyl. III., 508, pi. 209, 5.) 



Maskeliya, Kegalle, Puttalam, Ceylon ; Palni Hills ; in October. Stainton's 

 type was from Calcutta ; it was bred from Zizyphus jujuba. 



Prolonostoma, n. g. 



Head with appressed hairs : ocelli present ; tongue developed. Antennae §, 

 in $ serrate, minutely ciliated, basal joint moderate, without pecten. Labial 

 palpi very long, recurved, second joint with dense appressed scales, terminal 

 joint shorter than second, moderate, acute. Maxillary palpi short, distinct, 

 porrected. Posterior tibiae shortly rough-scaled above, Fore wings with 2 

 from angle, 7 and 8 stalked, 7 to termen, 11 from middle. Hindwings 1, ovate, 

 cilia ! ; 3 and 4 connate, 5-7 parallel. 



I consider this genus must approach very near the primitive form of the 

 (Ecophoridce, from which the whole of the remainder could theoretically be 

 derived. It has also marked affinity with the Plutellidce, and indicates their 

 probable origin from that family. The labial palpi, neuration, and superficial 

 characters are of clear GEcophorid type. On the other hand the maxillary palpi 

 are distinctly of Plutellid type, and I have not observed any similar in the 

 Oecophoridce ; the shortness of the cilia of hindwings, and apparent absence of 

 long hairs on posterior tibiae (these last are more or less damaged, and the 

 structure is not quite clear) are also Plutellid characters. Superficially the 

 species is very similar to Hypercallia pyrarcha described above. If the genus 

 is regarded as primitive, then it might have given rise through Cryptolechia to 

 the Depressariad subfamily, and through Hypercallia to the Oecophorid sub- 

 family. This solution would apparently satisfy all conditions of the problem 

 known to me at present. 



Protonostoma athopa, n. sp. 



$. 13-14 mm. Head ochreous-yellowish, crown dark fuscous except on 

 sides. Labial palpi yellow, second joint mixed with orange and more or less 

 irrorated with dark fuscous, terminal ]oint dark fuscous except apex. Maxillary 

 palpi pale yellowish, apex black. Antennae dark fuscous. Thorax dark fuscous 

 with a yellow spot on each side posteriorly, patagia sometimes mixed with or- 

 ange. Abdomen dark fuscous, beneath whitish-yellow. Forewings suboblong, 

 moderately broad, costa moderately arched, apex obtuse, termen slightly round- 



