86 PROCEEDINGS OF THE 



more in the state of larva, than that of imago, that this insect 

 attacks flour. M. Audouin has found in the sample submitted 

 to him an immense number of these larvae ; they had made 

 galleries in all directions, and many had formed for themselves 

 little cells or cocoons of the agglutinated flour ; but no single 

 one was actually transformed within its cell, in which it was 

 doubtless waiting the approach of spring. These larvae are 

 about five or six millemetres in length ; white ; the segments 

 of their bodies soft, and covered with long bristly hairs ; their 

 head is somewhat corneous, and of a pale yellow colour, but 

 the labrum and mandibles are brown. These larvas, when 

 disturbed, contract in the same manner as those of the Cock- 

 chafer and other lamellicorii Coleoptera ; in other respects they 

 somewhat resemble those larvas, but can extend the body to a 

 greater length, and they move much more readily on a smooth 

 surface. It is only during the night that they burrow in the 

 flour ; during the day they are motionless. Together with 

 these larvag were many of the insects in the perfect state. In- 

 dependently of those of Ptinus fur, M. Audouin found three 

 minuter and totally different larvae, which were evidently lepi- 

 dopterous, and perhaps those of Pi/ralis farinalis ; they were 

 but four or five millemetres in length, and appeared to be very 

 young. These larvae will be attentively watched, and the 

 result communicated to the Society, as well as further remarks 

 on the metamorphosis of Ptinus fur. 



The following papers were read : — 



Description of a new species of Procrustes, by M. Barthe- 



LEMY. 



On the copulation of some Lepidopterous genera, by M. 



DONZEL. 



General considerations on Entomology, by M. le Comte de 



LoCHES. 



Memoir on the genus Ranina, by M. Julien Desjardins. 



Memoir on a new insect from the Isle of Mauritius, by the 

 same. 



Memoir on a gall of the broom, and on the insect which 

 inhabits it, by M. Leon Dufour. 



Description of a new Zxjgcp.na, by M. Pierret. 



M. Leconte of Havre, proposed by M. Boisduval; M. 

 Badham of Glasgow, proposed by M. Buquet; and M. le 

 CoMTE de Loches, proposcd by M. Charles Chevalier, were 

 severally admitted Members of the Society. 



