216 THE CANADIAN ENTOMOLOGIST. 



mouth parts as they were described in the paper referred to. It is pro- 

 bably safe to assume, threfore, that the asymmetry noted is characteristic 

 of these two famihes at least. 



Of the group Tubulifera no representatives have been studied. I shall 

 not be surprised, since this is the lowest of the suborders, if examples of 

 Phlseothrips are found to be more nearly symmetrical. 



As an interesting fact, though in no way related to the main purpose 

 of this communication, I may mention that the solitary mandible of 

 Limothrips and Melanothrips is perforate, like the jaws of larval 

 Chrysopa, of Dytiscidse, and of Myrmeleon. In specimens of Coleoptra- 

 tidce examined, both labial and maxillary palpi are composed of three 

 segments. 



Note. — Since my return to Lexington from the meeting of the 

 American Association I have secured a couple of very young Phlaeothrips. 

 My examination of these is not completed, but I have succeeded in 

 demonstrating the single jaw on the left side. The parts are greatly 

 elongated, and remind one of the same organs in Hemiptera. The 

 styliform parts are especially long, extending, when retracted, into the 

 cranial cavity towards the eye, thence bending posteriorly and extending 

 along the posterior wall of the head to the mouth-opening. Both 

 mandible and styliform parts are perforate (or possibly grooved). 



Two unmistakable tarsal claws are present in this genus. From their 

 relation of position to the pads the latter would seem to be modified 

 pulvilli. 



Prof Osborn was much pleased with what Prof. Garman had stated. 

 He had also observed some of the points mentioned in a special study 

 which he had made of these insects, and hoped Prof Garman would 

 publish his results as soon as possible. 



Dr. Weed presented a short paper on the oviposition of Listronotus 

 latiusmhis. The eggs are laid in clusters of from five to ten upon the leaf 

 stalks of Sagittaria variabilis., and are covered with small pieces of the 

 epidermis which are nibbled off by the adult beetle. This was discussed 

 by Messrs. Garman, Fletcher and Webster. 



Mr. Charles Robertson, of Carlinville, 111,, read a most interesting 

 note upon the habits of the bee Eniphor botnbiii/ormis, which was 

 originally described by Cresson as a Melissodes, but Paton, in revising the 



