— 12 — 
во всей сѣверной и средней Европѣ; въ Россіи извѣстенъ изъ сѣвер- 
ныхъ и сѣверо-западныхъ губерній, Полыни, Московской и Тверской 
губерній и Сибири. 
11. Phryganea rotundata Ulm. 
Phryganea rotundata U 1 m e r, Stett. Ent. Zeit., LXVI, 
1905, pp. 5—7; Martynov, Trichopt. de la Sibérie. 
I. Ann. Mus. Zool. Ac. Sc. St-Pétersb., XIV, p. 233. Озеро 
Ильмень, у ст. Міасъ Оренбург, губ., 22. VI. 1913 
(2 сГсГ). (Form transitional towards Ph. grandis L.). 
One spécimen (№ 1) with the anterior wings 
colored as in Ph. rotundata, another (№ 2) ha- 
ving some indistinct brown streaks on the anterior 
wings as in Ph. grandis L., thus somewhat re- 
sembling Ph. grandis. Spécimen № 2 with the 
inner portions of the pedes genitales, seen from 
beneath, subtriangular and bearing on their inner 
sides some denticles or tubercles (fig. 7 b) as in 
c. 
TM 
et 
Рис. 7. — Phryganea rotundata U 1 m., 
уральскіе экземпляры. Нижніе отдѣлы 
pedes genitales снизу. 
Рис. 8. — Phryganea 
grandis L. и Ph. rotun- 
data Ulm. Нижніе от- 
дѣлы pedes genitales 
сбоку: а, с, d— grandis 
изъ Петроградской гу- 
берніи; b — то же, изъ 
Архангельской; e -ro- 
tundata уральскій экз. 
№ 12; f, h, — то же, си- 
бирскій экземпляръ. 
Ph. rotundata; in the spécimen № 1 the same por- 
tions being subquadrangular (fig. 7 a) as in Ph. 
grandis, but bearing some minute tubercles (as in 
Ph. rotundata). The same portions of the pedes 
genitales, seen from the side, form in Ph. rotun- 
data type two triangulär and equal teeth, 
X and y (fig. 8 f-h). In Ph. grandis type the tooth 
V is smaller than the x, and between them there are 
one to three another minute denticles, but in some 
North-Russian spécimens the tooth y is nearly equal to the x (fig. 8 c-d) 
and provided only with one minute tubercle at its base (fig. 8 d). In the 
speeimen № 1 from Ural the shape of the teeth wholly resembles those 
of Ph. rotundata type, but in the speeimen № 2 the tooth y is only 
slightly shorter than the x and also provided with a minute tubercle 
(fig. 8e). 
Thus thèse two spécimens from Ural form a transition from Ph. rotun- 
data type to some boréal spécimens of Ph. grandis. Taking in view the 
Horae Soc. Kntom. Ross. XLL № 5. 
