A new mutant of Tribolium confusum Jacquelin duVal (Coleoptera: Tenebrionidae), extra-large (designated xl), was isolated in mating competition tests with red-eye (re) and wild-type (+). Crosses showed that it was autosomal recessive gene with subvital effects. The pupal weights averaged 6.1 and 7.3 mg for males and females, respectively, about twice the weights of the ancestral wild-type. The generation time (egg to adult) was approximately 8 to 9 weeks compared with about 4 weeks for the wild-type. This increase resulted from a lengthening of the larval stage since the durations of the egg and pupal stages were within the ranges of the wild-type. Mean longivity of xl males and females was reduced to 8.5 and 6.0 weeks, respectively at 26.7 +/- 1 degree C and 60% RH.

Can. Ent. 108: 1387-1390(1976) The shape of plasmatocytes in heat-fixed blood of sixth instar larvae of E. rockburnei was compared with that of the same cells in the two other species of the "declarata group", E. campestris and E . declarata. The data show that the shape, represented as the lengthlwidth ratio of mature, fusiform plasmatocytes, can serve to distinguish between populations of all three species. It suggests too that E. rockburnei is more closely related to E. declarata than to E. campestris.

THE OANADIAN ENTon,IoLo(+IST. IO9 Proceedings an-d rransactions oJ the I'ioaa scoti,an Institu,te of Naturq,r -__Science.Vol. ii., part ii., isaZ_s. Ilalifax, N.S, W. Ct,..ip. we cannot but congratulate our sister prorrince. far awav bv the ?jl:^g".its enterprising and varuabre rnstitute oi Nut".ui's.iLrr"", $hlch, ,ludging lrom its published transactions, and trre interesting newsl,a}.,er reports of it,s meetings. is doing n good and usel'l wor.kl 'Ihe volume belbre us,,though certainly raihetl,rte irr iis u.ppearance, contains many vaiuable and-interestin"g pafers on varioui'branches ot n.a1 ural scrence, especialry crn 1,he maiin-e launa arrd minera.logy of the countrv. Address to the members aJ the Tynes,id,e Natural,ists, Fi,etcl, Ctub. Rv the President, the_Rev. Angus'Bethune, ILA,-rl.li;;;;J";t lts iZ"a Anniversary lVIeeting.Ilrnnx ro Yor,. I.-\4'e pulp_ose is."uing a title page and inclex to the first volume of the ianolrlian intodoiogist, *IiZt tt i. "ii_t u, compietes, with our issue of next month, the fi1st of the nerv volume.

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