1917 EXTOMOLOGICAL SOCIETY. 21 



In all sixteen the second joint of the antennae was distinctly less than half the 

 length of the fourth, somewhere between a quarter and a third the length. In the 

 genuine Microclytus yazellula, the second joint is distinctly more than half the 

 length of the fourth, somewhere between two-thirds and three-quarters the length. 

 After the specimens had been thoroughly relaxed the antennae were drawn out 

 taut over the ])ack ; in eight specimens the antennae proved as long as the insect, 

 and in eight they were about three-quarters the length. One may fairly assume 

 such a dilt'erence to be a sex distinction; probably the same difference will be found 

 to distinguish the two sexes of Microdytus gazellula Hald., but it is most im- 

 probable that any difference in the proportionate length of joint 2 to joint 4 of 

 the antennae should be found separating the sexes. Other differences are notice- 

 able between this guest of the choke-cherry and M. c/azellula, but whether the insect 

 should be placed under the genus Cyrtophorus or under Microclytus I am not in a 

 position to decide. 



On June 13th seven specimens of CalUdium ianthinum were captured on the 

 bark of white cedar — newly cut fence rails. In the third week of June many Longi- 

 corns were captured on dogwood blossom; these included Molorchus bimaculatus, 

 Callunoxys sanguinicollis, Clytanthm ruricola, Cyrtophorus verrucosus, Encyclops 

 caeruleus, Gaurotes cyanipennis, Leptura capitata, L. exigua, L. vittata, L. pubera, 

 L. ruficoUis (with var. sphaericoUls) , L. vihex, L. mutabillis; these were all abun- 

 dant: a single specimen of L. sanguinea was also captured, and a species not yet 

 identified. In the same week along the C.P.R. east of the City of Peterborough, 

 several colonies of Lema irilinenta were observed on patches of ground cherry 

 (Physalis), and on wild convolvulus 3 species of tortoise-beetle, Coptocycla aurich- 

 dlcea, C. guttata, and Chelymorpha argm. Feeding on pollen the female of HopUa 

 trifa.sciata was frequently seen at this time, but only a single male; a collector in 

 Port Hope who noticed this beetle earlier in the season, found the male predomin- 

 ant ; this appears to be the rule of that species ; the male appears first in great num- 

 bers about hawthorn and other blossoms ; a week or two later, the males become rare 

 and the females then become abundant. Owing to the unusually wet and cold 

 weather in ^lay and June many beetles seem to have been retarded. The first newly 

 emerged Elder-borer this season was taken on June 22nd, nine days later than last 

 year's record. In the third and fourth weeks of June many interesting species of 

 Elater and Buprestid were taken, especially the genus Corymhites. On June 25th, 

 north of Port Hope, a single specimen of Lina iremulae, a European leaf-eater, 

 was captured on a poplar ; it is known to occur in Massachusetts and Michigan. On 

 the same day a small Longicorn hitherto new to your Director was observed on 

 the leaf of a wild grapevine; a careful search resulted in the capture of a second 

 specimen on grapevine about a mile further east in the district north of Port Hope ; 

 a third specimen on grapevine was taken in Trenton on June 27th; but persistent 

 search of grapevines for more than a week failed to secure any more; the lieetle 

 was Hyperplatys aspersa. 



While staying for a few days in Trenton at the end of June, your Director 

 made some interesting captures. At Weller's Bay on June 28th, Leptura lineola 

 was taken in abundance on dogwood blossom in low-lying wet hardwood bushes. 

 At Glen Eoss on the Trent, June 29th, was captured a small black Oherea, said to 

 be the variety of himaculata known as hamlis Lee. It was taken on a wooded hill- 

 side among the undergrowth. Six specimens of the same creature were captured 

 in flight, a few years ago, in an almost identical situation north of Port Hope; 

 among the flora characteristic of such upland slopes are hazel bushes, wild rose, 



