‘ ‘ : Sint ; 
Wo FAD? “REPORT or THE COMBIESSTO3 eR oF AGRICULTURE, 
y 4 my 
. « .,Under date 6f take 12, Mr. Lutz ag. ain wrote me as follows: aes : gs. 
Ws . “Tn regard to the’ *Calathus gregartus my observations have shown me that he is 
 -a great lover of the eggs of the Colorado Beetle. = 4%, 
/ *Ynoticed that when one was seen wandering around over the potato slaaee i. a “Ate 
bunch of eggs were to be placed in his way he would stop and devour them, and a 
was not easily driven awa hy 
** Again, I selected an equal number of hills, one-half of which had no beetles j 
, under them, while the other haif had. I placed eggs on the hills, and in the morn- ~ 
R ing the eggs were all eaten where there were beetles, while the others were undis- . 
turbed. The next evening I placed beetles under the other Inlls, and in the morn- — 
ing the eggs were gone. ae 
~ “T had no slugs on my Meee until the last week in June, when the Calathus  __ 
began to disappear. In a few days after they disappeared the slugs came so fasit es 
that it became necessary to apply Paris green.’ hs 
This species of Calatius we have found very common in Iinois and Indiana, and — 
less common in Mississippi, Arkansas, and Louisiana. Dr. Le Conte (Proe. Ac. 
gente Phila., 1854, p. 36) gives its habitat as ‘‘N. Y. to Fla., Texas.” ve 
A NEW ENEMY TO THE BEAN AND COW-PEA. 6.7 ee 
Ms While in Louisiana, in April of the present year, I observed adult beetles of the. 
, species Cerotoma ‘s unmined, Fab., infesting bean-plants in garJens, where they de- 
stroyed the plants | oy first eating holes in the leaves and later eating out the whole — 
leaf between the larger vems. They were also cbserved to attack the Cow-peain ~~ 
great numbers, in the fields, after the same manner. F es 
On June 22, while visiting Hon. Samuel Hargrove, at Pr inceton, Gibson County,” 
Ind,, we again caught the same species in the act of destroying beans in the same 
manner as I had observed them earlier in the season in the South. * 
2 The species is common but not abundant in the West, from Minnesota south- — 
ward; being more abundant in Louisiana than in Indiana or Hlinois. Some spec- 5 
imens from Minnesota and New York are almost wholly of a clay-yellow color. 
To the Cow-pea this may prove a formidable enemy, especially in the South, and the 
beetles may easily be confounded with Diabrotica 12-punctata by the unobserving. >> 
THE STRAWBERRY SAW-FLY. E 
(Empiytus maculatus, Nort.) ra 
“ 
Dr. Riley has elsewhere stated* that this insect was double-brooded, the adults 
from the first brood of larvae appearing in late June and early July. These adults 
~ at once ovipositing, give origin toa second brood of larvae, which enter the ground 
in August and remain in their cocoons until the following April, when they pupate, 
and from these the progenitors of the first brood of larvae emerge. 
From the “ae that the first brood of larva: mature simultaneously with the 
ripening of the fruit, thereby precluding the possibility of destroying them by - 
arsenical se sagas: much interest has been centered in this second brood of larve, \ 
which, appearing after the fruit was gathered, would give the fruit-grower an 
opportunity of adepting those measures of destroying them which were previously s 
inapplicable. ‘ 
During the twenty years which haye elapsed since the life history of the species 
was first made known no one has noticed a second brood, although some careful. 
observers have attempted to do so. 
Prof. William Saunders states that on July 8, 1873, larvae, some of them half-grown 
and others full-grown, were brought to him from a garden near London, Ontario, 
A number of these larvee were place -d in flower-pots containing earth and leaves, 
such as were full-grown disappearing in the earth atonce. On Jt uly 23 an examina-~ 
tion showed these larvz in their cocoons unchanged, except by being contracted i in 
length. + 
Later Prof. S. A. Forbes states that larvze fully matured were placed in a breeding 
cage at Normal, Ill.,on June 21, 1884, and soon entered the earth therein. On July : 
19 these larvze were contracted in length, but had not pupated. On September LA 
and again on November 24, they were es <amined and found practically unchanged, ; 
and tlre adults finally emerged May 14, 1885.{ These last studies seemed to settle 
the matter of broods, so far as it was possible to do so with artificial environments. 
‘ On October 5, 1887, in the fields of Mr. J. C. Stevens, near Richmond, Wayne 
County, Ind., we were not a little surprised to find larve of this species, varying 
*Prairie Farmer, May 25, 1867 * Ninth Report Ins. Mo., p. 27, 1877. 
+ Fourth Report Ent. Soc. Ontario, 1873, p. 18. ; 
¢ Fourth Report State Ent. Lll., 1884, p. 77. Shae 
