NOTES AND OBSERVATIONS. 289 



curved, nearly as long as the others, which are of equal length, 

 oblique, the apical slightly curved at the apex ; the second cubital 

 cellule more than twice the width of the base at the apex, the 

 recurrent nervure received near its apex. Temples short, obliquely 

 roundly narrowed. 



The known Bornean species of Tiphia should be known 

 thus : — : 



1 (2) Wings fuscous violaceous ; length, 15 mm. . fumipennis, Sm. 



2 (3) Wings yellowish ; the nervures and stigma 



testaceous ; length, 10 mm. . . . Jiavipennis, Sm. 



3 (2) Wings for the greater part hyaline. 



4 (5) Length, 5-6 mm. ; the nervures and stigma 



black ; the four anterior tibiae and tarsi tes- 

 taceous; the abdominal pile pale . . borneana, 



5 (4) Length, 10mm.; the nervures pale testaceous; 



the legs black ; the abdomiual pile blackish, stigma, Sm. 



NOTES AND OBSERVATIONS. 



Denton's Patent Butterfly Tablets. — We have received a sample 

 of these tablets. The butterfly in it is a specimen of Cethosia cyane, 

 from Assam. It is mounted in its air-tight case, to show the under 

 side. Whilst speculating as to the practical use specimens treated in 

 this way could be to the entomologist, the thought occurred that it 

 might be a good plan to have a few of such tablets by one. Non- 

 entomological friends often wish to make closer examination of speci- 

 mens than it would be prudently admissible for them to do in the 

 ordinary way, but enclosed in these cases the most fragile insect might 

 be safely handled by the uninitiated. 



Some Measurements of Sympetrum scoticum. — A series of the 

 small black dragonfly, S. scoticum, obtained by us at the Black Pond, 

 Surrey, on 20th September last, include two or three particularly small 

 males. The smallest of them measures only 27*5 mm. in length and 

 42 mm. across the hind wings. This specimen affords an interesting 

 contrast with a large male taken at the same place on 3rd September, 

 1906, the length of which is 33-5 mm. and the expanse 52 mm. 

 F. W. & H. Campion ; 33, Maude Terrace, Walthamstow, November 

 6th, 1907. 



Food-plants of Oporabia autumnata. — With reference to Mr. 

 Harrison's interesting note (antea, p. 255), I may add that in my paper 

 on "The Life History of Oporabia autumnata" (Trans. City Lond. 

 Ent. Soc. ix. 42-52), I recorded as food-plants, fir (Doubleday, teste 

 Guenee), and larch (Piingeler, in litt.), besides birch, alder, oak, sallow, 

 aspen. Evidently, although having certain definite preferences, it can 

 accommodate itself to almost anything, for in the same place I quote 

 a record from Sparre Schneider to that effect ; and in Part x. of the 

 same Society's Transactions (p. 18), I record breeding a series from 



