390 A, EF. Verrill—The Bermuda Islands. 802 
Bermuda, and probably it will occasionally be found cast ashore in 
masses of gulf-weed, after storms. It lives on the surface of the sea, 
quickly moving about by means of its long legs, much like the 
“skating-bugs ” on fresh water. (See White, Voy. Chall., vii, p. 40, 
jolly ae, sth@es. aL) 
Aphids ; Plant-lice. 
Several species of aphids were obtained, but some have not yet 
been determined. One, which was found common on the leaves of 
the lemon and orange trees, is apparently Wectophora, or Sipho- 
nostoma, citrifolii, fig. 177. Common on the orange in this country 
also, and capable of doing much injury. The body, both of the. 
apterous and winged forms, is black or dark brown. 
178 
Figure 177.—Orange Aphis (Nectophora citrifolit), much enlarged; a, winged 
form ; b, wingless form ; n,n’, abdominal tubercles. Figure 178.—Cabbage 
Aphis (Aphis brassice); a, winged male; 6, oviparous female, both much 
enlarged; after Weed. 
Cabbage Plant-louse ; Cabbage Aphis. (Aphis brassice L.) Figure 
Wash, 
According to the notes of Mr. Geo. A. Bishop, this species is often 
injurious to the cauliflower. Doubtless it occurs also on cabbage. 
The winged males have a small body ; thorax brown or blackish ; 
abdomen pale greenish brown, with transverse rows of black spots ; 
legs mostly black. 
The oviparous females are pale green with three rows of indistinct 
blackish spots on the abdomen, and two rows on the thorax ; legs 
and antenne dull brown. 
Coccids ; Scale-insects ; Mealy-bugs ; Bark-lice. 
Numerous species of these destructive insects are particularly 
liable to be introduced attached to the bark and leaves of growing 
