275 



The fauna of dragonflies of neighbourhood of Tomsk is very simi- 

 lar in the constitution of species to that of the governments of the cen- 

 tral belt of European Russia. We find, for instance, out of 28 species 

 in the collection that 13 are identical with species found in the govern- 

 ment of Moscow (821/2 %)■ 



In the neighbourhood of Tomsk however the following, rare or en- 

 tirely absent in central European Russia, are very common: 1) the 

 eastern species — Aeschna gigas, AescJma juncea ^ and Ophiogoniphus 

 cecilia^ 2) the southern species — Gompluis flavipes, Lestes virens and 

 Sympycna braueri^ 3) the nothern species — Agrion armatami and 

 4) Agrion vernale. 



Categories 2) and 3) shew amongst other things, that in the 

 neighbourhood of Tomsk the same intermixture of the southern and 

 northern species is to be remarked as we noted before in dealing with 

 the dragonflies of the Central Oural ^. 



Besides this the following species frequently met with in the cen- 

 tral belt of European Russia, are apparently wanting in Tomsk district: 

 Libellula depressa, Aeschna cyanea, Gomphus vulgatissimus, Onycho- 

 goniphus forcipatus, Agrion pidchellum and Agrion piiella. 



3. 

 Dragonflies collected by S. Chugunof in Barabinsk Steppe 

 (Kaïnsk district Tomsk government). 

 • (1907.) 



1) Leptetram quadrimacidatum L. cfC . 



2) Leucorrhinia ruhicunda L. ; cf Q. 



The basal part of wing of the femals is very much saffron coloured. 



3) Sympetriun scoticum Don.; cTQ. 



4) - flaveolum Jj. ; çfQ. 



5) - ridgataiìi L.; 1 rf ^^^^ 1 Q. 



6) Aeschna serrata Hag. 



To the description of this species recently given by René Martin'' 

 must add the following: 



1) The length of pterostigma rj': 3,5 — 3,75 mm. 



Q : 4—4,25 mm. 

 2] Auricles of the male have five teeth. 



■^ In Moscow government this species is much more rarely met with than in 

 Tomsk. 



4 Probably another northern species — Agrion concinninii Joh. — will be 

 found here. 



5 Works of the Soc. of Natural, of Univ. of Casan. XLI. 1. 1908. 



<"' Collections zoologiques du baron Edm. de S e lys Long e h amp- 

 Fase. XVIII. p. 37. — Bruxelles 1908. 



18* 



