OF WASHINGTON. 213 
alive and in very good state of preservation, while in the Perlidce and 
Ephemeridce most specimens are found drowned. In the Odonata, which 
are well represented in the Lake Superior region, it is difficult to find living 
specimens on the beach except in the family Agrionidce. These are gener- 
ally alive and in good condition, owing no doubt to the fact that they are 
poor flyers, and have not been long exposed to the water. The remaining 
families of Odonata are among the best flyers. They fly for many miles 
out over the water, and many are no doubt able to fly across the lake at 
its widest part. But many specimens fall into the water, and are finally 
driven ashore in a badly decayed condition, thus showing that they must 
have been in the water for a long time, but even among those not decayed 
it is hard to find a living specimen. The Trichoptera are by far the most 
numerous insects in the Lake Superior region, and they are also best rep- 
resented among the insects cast ashore, constituting about one-half of the 
whole mass. On account of this multitude of specimens, it becomes a 
difficult thing to estimate the proportion of the living to the dead speci- 
mens. There are millions of dead specimens, decayed or not decayed, 
millions of half-dead specimens, and other millions which are in excellent 
condition and as lively as ever. 
ORTHOPTERA. These can hardly be taken into consideration here, since 
they are so poorly represented among the insects on the beach. All I found 
were a few specimens of a Locustid (Microcentrus}, which were alive and 
in excellent condition, and a few species of A cridiidce {Caloptenus bivit- 
tatus, atlanis, femur-rubrum, and perhaps two other species); but these 
in great number of specimens, and here the living specimens by far out- 
numbered the drowned specimens. 
HEMIPTERA. These offer but little occasion for remarks. As a whole, 
they are well represented on the beach and tolerably well fitted to sustain 
immersion. Of the Gymnocerata only a few specimens of Corymelcena 
were found, all drowned. The Pentatomidceand. Capsidce&n the best rep- 
resented families, the latter in most cases alive, in spite of their delicate 
appearance and soft covering. Among the Pentatomidce more drowned 
specimens are met with than one should expect. Coreidce&nd Reduvttdce 
are not well represented, and many specimens are dead. Saldidczare com- 
mon on the beach and as lively as ever, but probably most of them have 
not been washed up by the waves. Tingitidce abound in specimens, though 
representing only a few species, and are in excellent condition. Of the 
aquatic families, occasionally a specimen is brought in by the waves, al- 
ways in living condition. Of the Homoptera, numerous Cicadas (two 
species) were found, all of them dead. The smaller Leaf-hoppers occur in 
enormous number of specimens (but not many species), most of them 
alive. Psyllidce, Aleurodidce, and winged Coccidce were not seen. Aphi- 
didce are there in large number, and more especially certain Pemphigince, 
and of these the same may be said as of the small Diptera, viz., the living 
specimens are easily seen, but the drowned overlooked. 
LEPIDOPTERA. I was surprised that whatever species are washed ashore 
