102 Dr. IF. Scott's Notes on hiolor/y of some mquilines and 



killed iiiid preserved ; the other two excavated cells for 

 pupation early in Ang. 1918, in which they remained as 

 resting larvae all the winter, not pupating till late April 

 or early May 1919, and emerging as adults late in May. 

 Therefore, as far as could be ascertained, the restitig-larva 

 condition endured about nine months, while the pupal 

 period occupied twelve days or more. 



DeMilrd nhftprmtions of irintcring avd pn pat ion.- — The following 

 is a more detailed account of the behaviour of these two larvae. 

 For several days they were observed wandering restlessly about 

 the vessel containing the nest-fragments, as though seeking a place 

 for pupation. Therefore on Aug. 8, 1018, they were isolated in 

 a small glass ves.scl containing sawdust to a depth of about lialf 

 an inch. The very next day both had excavated cells, one against 

 the side of the vessel, the other in the angle formed by its side 

 and bottom (cf. Epuraea depresm,). As in the case of Epuraea 

 depressn, the cells were not lined with any secretion. 



In these cells the larvae remained the whole winter. The saw- 

 dust was slightly moistened about every second daj^ Ordinarily 

 the vessel was only covered with fine gauze, but when its contents 

 became very dry it was sometimes lightly covered with a glass 

 cover for about 24 hours after moistening tlie sawdust, to allow 

 the moisture to diffuse through the contents. The vessel had to 

 be moved from one place to another several times, owing to my 

 leaving London. It was kejit in rooms where fires were only 

 burning exceptionally, and xinder these conditions changes in the 

 weather affected the behaviour of the larvae to some extent. At 

 first they lay in their cells against the glass, but when a cold spell 

 set in, they retired deeper into the sawdust, pushing sawdust 

 between themselves and the glass, so that they were no longer 

 visible through the sides of the vessel. They reappeared against 

 the glass more than once in milder weather, but finally both dis- 

 appeared within the sawdust for the greater part of the winter. 



One larva was seen moving about in its cell from the time it 

 excavated the latter (Aug. 9) till Aug. 13. After that it went 

 further into the sawdust and reajipcared several times, and was 

 observed lying in several different positions. Sept. 5-11, it was 

 in a nearlj' vertical position, and hind end upmost during part, 

 if not all, of the time. Sept. 13, it had pushed the sawdust away 

 and opened a wide cell against the glass again, and was lying 

 therein head upwards, at an angle of about 45°. When last seen 

 (Sept. 23) it was lying on its side, nearer the horizontal, Sept. 2G, 



