530 



Order Diptera. 



A specimen of the wingless Snow Cranefly, Chionea z'alga 

 Harris, from Banff. The superficial resemblance of this insect 

 to Boreiis is quite striking. 



Order Lepidoptera. 



Specimens illustrating the families of the Jugo-frenata, which 

 forms the most archaic division of the Sub-order Homoneura, 

 the other division being the Jugata, families Hcpialidae and 

 Protothcoridac. 



In the oldest family Micropterygidae. specimens of the New 

 Zealand genera Micropardalis and Sahat'inca were shown, 

 together with specimens of Microptcryx from England. The 

 larvae of these insects feed on moss, and are remarkable in 

 possessing a retractile head with three-jointed antennae and 

 small compound eyes, while the abdomen carries a pair of 

 jointed legs on each segment. The newly discovered larva of 

 Sabatinca barbarica Philpott was also shown, together with 

 some microscopic preparations of the same, one of which 

 showed very clearly the five-facetted compound eyes. 



These insects have been placed by Comstock in the Trichop- 

 tera and by Chapman in a new Order Zeugloptera ; but a study 

 of the venational characters of the imagines shows very clearly 

 that they are properly to be regarded as true Lepidoptera. 



The next family, Eriocraniidac, have leaf -mining larvae with- 

 out either thoracic or abdominal legs. Imagines and young 

 larvae of Erio crania pur pure Ha Haw. were shown. 



The third family, Mnesarchaeidae, is represented only by 

 the Plutellid-like Mnesarchaea from New Zealand. Nothing is 

 known of its Hfe history, but it is probably a moss feeder and 

 a specialized offshoot of the Micropterygidae proper ; both fore 

 and hind wings have lost one of the original eleven apical veins. 



