12 
eonformis, and is, I believe, undoubtedly Coecinella repanda Thun- 
berg, though I do not find it catalogued under that name by Mr. Mas- 
ters. This Lady-bird is generally associated with Leis in its attacks on 
Mytilaspispomorum, and in one or two places in the south of the island, 
they have, unaided, completely stamped out the scale. They make a 
small round hole in the top of the scale and devour the eggs. This 
last year (1892) I found the gardens about Brighton, in the midlands, 
perfectly alive with the larva? of these two Lady-birds, but I could dis- 
cover but little for them to feed upon except the Eose Aphis. Perhaps 
I visited the district too late, and their work was done. The third 
Lady-bird I have only found in one part of the island, Scottsdale. It is 
described by the Eev. Mr. Blackburn, of South Australia, as Yerania 
frenata Erich. (Alesia frenata Erich., according to Masters's Catalogue) 
I found this Lady-bird only in its perfect form : I hunted well about for 
larva?, but I could not discover them. It was feeding ravenously on 
the Woolly Blight (Sell izoneura Jan igera). The fifth Coccinellid puzzles 
me. On examining the specimens in the Sydney Museums I find that 
there is a very marked difference in the appearance of the Australian 
and Tasmanian specimens. Here they are, with the exception of the 
six orange spots, of a uniform lustrous blue-black metallic color, while 
the Australian specimens show gradations of shade and color as shown 
in Fig. 1, PI. ix, p. 67, vol. n, part 2, of the Xew South TVales Agricul- 
tural Gazette, 1891. I do not pretend to say without further informa- 
tion, but 1 am inclined to think they must be different. Two black 
Scymni are extremely common in places under the loose bark of Euca- 
lypts. I seldom found them on economic plants. Owing to the elon- 
gated compressed shape of the first of these I was at first almost inclined 
to think that I must be mistaken and that it was a phytophagous insect, 
a Paropes, for instance, but on examination I find that it is undoubtedly 
a Coccinellid. It is only sparsely pubescent, while the other one is 
largely so. The last four or five segments of the abdomen are of a 
distinctly yellowish brown or fulvous color. It is "hemispherical and 
at times very small indeed, though possibly there may be different 
species. I shall be glad to send you specimens of any or all of these 
Insects if they would prove interesting to you. 
EXPERIMENTS WITH THE HOP LOUSE IN OREGON AND WASH- 
INGTON. 
(Eeport of an investigation made under instructions from the Entomologist.) 
By Albert Koebele. 
I arrived at Portland, Oregon, April 19 and visited Prof. P. L. Wash- 
burn at the Experiment Station at Corvallis, Oregon, who has had this 
insect under observation tor some time and who has published valuable 
