220 



HYMENOPTEEA. 



most of the time in the pupa state, while the % lives nine daj-s. 

 The first brood of worms appeared May 21, the second brood 

 June 25, Winehell describes the larva as being pale-green, 

 Avith the head, tail and feet, black, with numerous black spots 

 regularly arranged around the body, from which arise two or 

 more hairs. Figure 14(j, 1 , shows the eggs deposited along the 

 under side of the midribs of the leaf; 2, the holes bored by the 

 very young larvae, and 3, those eaten b}^ the larger worms. 



In transporting gooseberry and currant bushes, Walsh recom- 

 mends tliat the roots be carefully cleansed of dirt, so that the 



cocoons may not be car- 

 ried about from one gar- 

 den to another. The leaves 

 of the bushes should be 

 examined during the last 

 Aveek of Ma^^ , and as only 

 ^ a few leaves are affected 

 at first, these can be de- 

 tected by the presence of 

 the eggs and the little 

 round holes in them, and 

 should be plucked off and 

 burnt. The female saw- 

 fly is bright honey-yelloAV. 

 with the head black, but 

 yellow beloAv the insertion of the antennre. The male differs 

 in its black thorax, and tlic antciniaj are paler reddish than in 

 the female.* 



The genus EmjjJif/tus has nine-jointed antennfB ; the third 



* Mr. Norton has communicated the followhig description of the larva of anothnr 

 ea^ir-fly of this genus which infests the weeping-willow. 



" Xeiii'.ttus trUineatus Norton. The larva; of this w^re flrst seen upon the weep- 

 ing-willows al)Out August 1st, in immense numbers, almost wholly stripping large 

 trees of their leaves. They begin upon the edge of tlie leaf and eat all of it except 

 the inner midrib. They are very sensitive to disturbances, very lively, and arc 

 generally found with the hinder part of tiieir Ijodies bent up over the back. They 

 are twenty-footed, of a bright green color, palest at head and tail, with live rows of 

 black dots down the back, the outer row upon each side irregular and with inter- 

 vals. Ou each side above the feet is another row of larger black dots, and the three 

 anterior pair of feet are black at the base, middle and tip. 



" A great number of the saw-flies were foimd flying about the trees, August ICth. 

 in the proportion of about ten males to one female. The males being almost 

 wholh- black upon the thorax." 



