242 ZOOLOGY. 
onions, and by puncturing them, destroyed about $10,000 worth of 
this valuable crop in Essex county alone in the summer of 1871. 
he parasite of the imported cabbage caterpillar is described 
and figured (Fig. 42, a, male; b, female; c, larva; d, front and side 
view of pupa). To Mr. A. G. T. Ritchie of Montreal is due the 
Fig. 43. credit of first making 
known the history of this = 
invaluable insect. We 
| have raised many of them 
5 Pteromalus puparum, and 
Tachina larva. has been known to be a 
native of Hudson’s Bay Territory since 1844, so that it could not 
have been introduced with the Pieris rape, its host. 
Fig. 43 illustrates a Tachina parasite of the same butterfly found 
by us at Salem. Its imago is unknown. The cabbage web moth 
(Fig. 44, with cocoon), which is sometimes so destructive, is no- 
Cabbage Web Moth. 
Fig. 46. 
ticed; also the radish weevil (Fig. 45 from Curtis, illustrates the 
different stages of the European Ceutothynchus assimilis). It is 
thought that an example (Fig. 46) found about fifteen years ago 
by the writer, on the radish, in Maine, belongs to this species. In 
Europe it is said to be very destructive. : 
Another beetle likely to prove annoying, as we have found'it in — 
ferneries and gardens, and which in England is said to be a “ dread- — 
ful pest in gardens,” is the weevil, Otiorhynchus picipes (Fig. 47). 
The raspberry saw fly (Fig. 48) is noticed, and the chestnut , 
_ weevil (Fig. 49), which is thought to be the larva of a species of 
_ Balaninus, related to B. nasicus (Fig. 50). 
