248 FOREST LANDS OF NORTHERN RUSSIA. 
accompanied by a diagram representing the cambium to 
the depth of from seven to eight verstchoks; from the 
outer circumference proceeded several branching blue 
lines; and in the branches of thesé, at varying distances, 
were black circular and oval spots. These represented a 
horizontal slice of the trunk of a Pinus sylvestris; and the 
blue ramified lines represented the horizontal course made 
by the insect, the biack spots indicated places at which it 
departed from this to take a course more or less vertical]. 
* According to my observation, M. Guenther went on to 
say, ‘the insect never penetrated beyond the cambium. 
Besides this, old trees were throughout their whole thick- 
ness entirely destroyed by similar oval vertical openings, 
produced apparently by the Tetropium luridum, 
SECTION A.—COLEOPTERA. 
THE following is a list of Coleoptera, according to Cata- 
logus Coleopterorum Europae et Caucasi, auctoribus L. V. 
Heyden, E. Reitler, et J. Weise, collected in the Govern- 
ment of Olonetz by Forst-Meister A. Guenther, Petra- 
zavodsk :— 
‘Catalogus Coleopterorum Gubern. Olonetzeus. 
Cicindela campestris, L. C.hybrida, L.  C. sylvatica, L. 
Cychrus caraboides, L. 
Melancarabus glabratus, Pk. 
Carabus nitens, L. C. clathratus, L. C. granulatus, L. 
C. Menetriesi, Fisch. 
Nebria cursor, Mill. N. Gyllenhali, Schh, 
Leistus ferrugineus, L, L. rufescens, Fbr. 
Notiopholus aquaticus, L. N. palustris, Dft. N. bigu- 
thatus, F’br. - 
Blethisa multipunctato, L. 
Elaphrus uliginosus, Fbr. E. cupreus, Dft. E. riparius, L. 
Tachypus pallipes, Dft. TT. flavipes, L. 
Bembidion velox, L. B. punctulatum, Drap. B. bi- 
