( ^1 ) 



(Central and Western), Japan, Singapore, Borneo, New 

 Guinea, Trobriand Islands. 



Mr. T. Bainbrigge Fletcher had informed the speaker 

 that the Alucita extended from India to the Philippines and 

 the Solomon Islands, but had as yet been but little observed 

 in the Malay Archipelago. 



The wide area over which these species were at present 

 known to range and the absence of any marked local varia- 

 tion might with probability be explained by the power of 

 distribution in the manner detected by Mr. Muir and Mr. 

 Kershaw. 



Notes on the Life-history op Aulacodes simplicialis, 

 Snell. — Professor Poulton exhibited specimens and drawings 

 of Aulacodes simplicialis, Snell., one of the Hydrocampinae, 

 also sent to him by Mr. Muir and Mr. Kershaw. Mr. 

 Muir's letter of Dec. 24th, 1908, already referred to, contained 

 the following reference to his and Mr. Kershaw's observations : 



" Before leaving Macao we found a little moth living in the 

 streams, and also a parasite that attacks it. I enclose you 

 some sketches (made by Kershaw) of it, along with some notes, 

 and specimens of imago, larva, pupa and cocoon. If the life 

 of this species be vinknown the observations may be of 

 interest, and you can use the notes as you wish." 



Accompanying the letter was the following interesting record 

 of the observations conducted by these two naturalists : — 



"One of the last entomological excursions we made before 

 we left China was to Lappa, a mountainous island on the 

 western side of the harbour of Macao. Many streams arise 

 among these granite mountains and rush down the steep 

 gullies in a series of small waterfalls. In several spots where 

 the water was most rapid we found the larva of a species of 

 Hydrocampinae living on the surface of the rocks, sometimes 

 under eighteen to twenty-four inches of swiftly flowing water, 

 at other times under a few inches, or where the rocks were 

 continuously covei-ed with a shower of spray. 



" The larva appeared to be very similar to De Geer's figure 

 oi Paraponyx stratiotata, L., the second and following ten body 

 segments bearing a protuberance on each side, from which 

 forty to fifty thread-like gills arise (Fig. 1). The pupa is 



