136 (November, 



the margin that definition is scarcely possible. The right elytron has a slight 

 tendency to development, as in another of these specimens ; the thin truncated apex 

 being longer than in ordinary examples. — E. C. Eye, 70, Charlwood Eoad, Putney, 

 S.W. : 29th September, 1878, 



Hemiptera near Norwich. — The almost unprecedented amount of wet weather 

 which has pi'evailed in this disti'ict throughout the past season has made insects very 

 scarce. The following, however, may be worth recording : Idiocerus Heydeni, off 

 Lombardy poplar in one locality near here, in company with I. H-alhum and populi. 

 Chilacis typhce, one example by sweeping near some pits at Swanton Morley. Psylla 

 visci : I had no opportunity of looking for this insect in May, but took a few examples 

 of the summer brood at East Carlton in August. It remains most unaccountably 

 scarce, as I have worked its food-plant well on three occasions, but have not taken a 

 dozen specimens in all. Typhlocyba Douglasi : I took several examples of both sexes 

 on beech and lime a few days since. I have mounted one of the males for the micro- 

 scope, and find my former observations and figure (vol. xiv, p. 248) verified in every 

 respect, so that I am more than ever certain of the distinctness of the species. 

 TypJdocijha debilis, Douglas, one $ on beech. — James Edwaeds, Bracondale, Norwich: 

 20th September, 1878. 



On the pupation of the Nymphalidce. — I have carefully examined the specimens 

 prepared by Dr. Osborne, and forwarded to me by the Editors of this Magazine. 

 They shew very plainly that the " membrane " he describes is by no means the 

 spiracular lining as I had imagined, but is a structure certainly possessing special 

 relationship to the suspension of the pupa, and that Dr. Osborne has really made a 

 new and interesting observation. I speak subject to correction, possible on observing 

 fresh specimens, but the specimens seem equally clearly to show that the " mem- 

 brane " is not a special and separate structure, that it is not a third, or part of a 

 third, envelope, distinct from the larval and pupal skins, and that its triangular 

 form is due to Dr. Osborne's method of preparation. The 13th segment (8th 

 abdominal) consists of two portions (strictly two segments), the segment proper and 

 the anal tubercle, the latter foi'ms the hook-covered tubercle, by which suspension 

 takes place ; the segment proper is reduced on its ventral aspect in the pupa to a 

 narrow line, presenting two distinct small rounded tubercles. In the specimens, 

 these tubercles are distinctly hitched into a fold of the larva-skin, and must thereby 

 give increased security to the suspension of the puj^a, this must be by the portion 

 of skin posterior to them. In Dr. Osborne's specimens, a triangular ligament is 

 shown by the reflection of the skin backwards, the triangle having its apex at these 

 tubercles, and consisting of the double fold of the skin, the anterior portion being 

 thrown back over the truly suspensory posterior portion. — T. A. Chapjian, Hereford: 

 "Jth October, 1878. 



Leucania vitellina at Torquay. — On the evening of the 11th September, in com- 

 pany with my friend, Mr. A. H. Jones, of Eltham, I captvired at Torquay a very fine 

 male specimen of Leucania vitellina. — R. S. Standen, Holmwood Lodge, Surbiton : 

 October 4th, 1878. 



