56 
in spite of the closest observation could not be detected attacking the 
OCrioceris. In confinement the Collops beetle feed freely on both larve 
and eggs of Crioceris. 
The bordered plant-bug (Stiretrus anchorago Fab.).—An individual of 
this pentatomid, perhaps three fourths grown, was taken August 1 at 
Marshall Hall, Md., with a Crioceris larva transfixed upon its probos- 
eis. Others were seen upon tlie asparagus, and one kept in confine- 
ment fed voraciously upon the larve of the asparagus beetle and those 
of Galerucella luteola Miill., the imported elm leaf-beetle. 
August 4 the captive specimen, after having devoured two Crioceris 
larvee, was supplied with another upon a spray of asparagus. After 
abstracting all the juices from the larva it at once sunk its beak into 
the asparagus. While engaged in this operation an elm leaf-beetle 
larva was inserted, which the bug found almost as soon as it withdrew 
its proboscis from the asparagus. 
This species appears to have a predilection for coleopterous larve. 
On the Department of Agriculture grounds the writer has seen it prey- 
ing upon the larvee of the Colorado potato beetle, and Townend Glover 
noticed the same thing upwards of twenty years ago. The same writer 
observes of this species, which he memtions both as diana and fimbri- 
aius (Report Comm. Agr. for 1875, pp. 118, 119), that it was found in 
Maryland busily employed in killing and sucking out the juices of the 
squash ladybird (Hpilachna borealis). The writer has also seen this 
bug preying upon the larve, and Mr. E. A. Schwarz has observed it 
attacking the pupa, of the elm leaf-beetle in the open. 
The spined soldier bug (Podisus spinosus Dall.)—Among the twelve- 
spotted species brought to this office from Oxon Hill, Md., was a larva 
of this species. It was kept in the jar with the beetles for a few days, 
and was seen with a beetle suspended from its beak. This bug was 
often seen on asparagus destroying the larvee of the common asparagus 
beetles by impaling them on its proboscis and sucking up their vital 
fluids. 
It is somewhat surprising how an insect so slow of movement as is 
this soldier bug can capture much more active species. August 2 an 
individual was seen at Marshall Hall, Md., with the adult of Disonycha 
glabrata, a tlea-beetle that commonly infests the pigweed. 
Polistes pallipes St. Farg.—Different individuals of this wasp had 
been noticed flying about the asparagus plants on the Department 
grounds during July. Onthe 28th of this month a wasp was seen with 
a nearly grown larva in its mouth, and a second individual was watched 
as it flew leisurely about the infested plants in search of a larva. This 
found, the wasp seized it in its jaws and flew away. A third wasp 
seized a larva near the anus that clung tenaciously to the plant and 
required a considerable effort for its dislodgment. Subsequently other 
wasps were noticed in various localities preying upon the larvee, which 
