- 649 — 



bearing but two curved spines on 2ach side of mesonotum. All abdo- 

 minal segments well defined, the segmentation being very distinct in 

 the terminal segments also. Stigmata situated on some highly protru- 

 ded gibbose elevations. Sternites free, uncovered from the sixth to 

 tenth, eighth being very narrow. Ninth sternite bearing a pair of very 

 peculiar processus ^*''), leg-like, long, cylindrical, flattened directed obli- 

 quely forwards and covered at apices with many fine hooks, radia- 

 ting and curved at ends (hamuli). Cremaster undeveloped, with no 

 hooks or setae. Anus in form of a longitudinal slit on the tenth seg- 

 ment, which is naked and regularly rounded. Ostium ductus ejacula- 

 torii clearly visible, in form of a longitudinal depression, with two 

 lateral lips, on the ninth segment between the bases of the above des- 

 cribed processus. Female copuiatory opening, ostium bursae, scarcely 

 visible, in form of a small and short depression on the middle of the 

 narrow ninth sternite. Ostium oviductus invisible and, probably, fused 

 with the anus. 



The genetic affinity of Parametriotes with other Coleophorini can 

 be traced and established especially by the male genitalia which, 

 notwithstanding the great external difference, in reality are closely 

 allied in their structure. Characteristic features are the absence of- 

 uncus, strongly developed tenth sternite with its lateral appendages 

 (pleurites?) bearing peculiar r.ubscaphium. This latter, double (and 

 primitive) in Parametriotes (pi. VI, f. 13 and 14), is fused into one cone 

 in Metriotes (pi. IX, f. 31 and 32), with distinct traces of this junction, 

 or in one convex plate in Coleophora vibicella H b. (pi. IX, f. 33), or, 

 lastly, in a knob-like structure (C. alcyonipenella К о 1 1.; pi. IX, f. 34). 

 This fusion of subscaphium I consider to be secondary. 



Объяснены таблицъ V — IX. 



Explanation of plates V— IX. 

 Imago. 



Рис. 1. — Parametriotes, n. gen., theae, n. sp. $. Zeiss binoc, obj. 

 F. 55, ОС. 2. 



Рис. 2. — Голова P. theae, сбоку. Zeiss binoc, obj. 33, oc. 2. 



Рис. 3. — Препаратъ головы, спереди; vt — vertex; fr — frons; ос — 

 ocuhis; gn — gena; Ibr — labrum; pd — pedicellus; sc — scapus; fn — funi- 

 culus (изъ 40 члениковъ); pf — pilifer; p. mx — palpus maxillaris; mx — ma- 

 xilla; p. 1 — palpus labialis. Zeiss, obj. B, oc. 1. 



I'i) The homologization of these processus with larval prolegs is im- 

 possible, notwithstanding their external appearance and similarity, the larval 

 prolegs being on the ninth segment always absent. That is, possibly, an 

 example of structural convergency. 



PyccK. Эмтом. Обозр. XV. 1915. № 4. 42 



