]■ 
I 
E III.—ON NEW INSECT ENEMIES OF THE BLACK¬ 
BERRY AND RASPBERRY. 
1. The Blackberry Leaf Miner. 
(Metallus rubi, gen. et sp. nov.) 
Order Hymenoptera. Family Tenthredinidte. 
(Plate IX. Fig. 7.) 
1 3 12th August, at Normal, Mr. Garman found mining the 
cultivated blackberries, small white larvae with brown heads, 
ansformed early in September to small saw flies, one spec- 
terging on the 9th and another on the 10th of that month, 
isformations occurred in the earth, the larvae having deserted 
es as early as September 6. 
DESCRIPTION OF GENUS. 
or tibiae with a single spine, other tibiae with two; antennae 
ded, third joint longer than the fourth, but not twice as long, 
hort, about as wide as the thorax; the latter subglobular; 
i wings with two marginal and three submarginal cells, the 
irginal the smaller, the first submarginal curved, longer than 
i nd, the third largest of all; lanceolate cells petiolate. 
I, 
DESCRIPTION OF SPECIES. 
i,—Head, thorax, and abdomen shining black, clothed with 
llowish pubescence; antennae sparingly pubescent, strongly 
i sed, third joint about five and a half times the length of the 
1 ourth and fifth equal, sixth, seventh, and eighth successively 
shorter, the ninth longer than the eighth; legs pale, all the 
| md the posterior tibiae fuscous; wings smoky, almost black, 
ns black, but slightly tinged with fulvous. Length, 8.5 mm. 
8.5 mm. 
bed from two specimens bred from blackberry leaves. 
1 —The larva is 8.5 mm. in length by 1.25 mm. in breadth, 
pal, skin minutely roughened. The second and third thoracic 
3 and the first abdominal are much thickened vertically, 
ii convex dorsal outline to this region. From the second 
. , \ 
