INSECT A. 
191 
short, erect tuft ; palpi stout, curved, ascending, a little longer than 
the breadth of the head; second joint with a short thick tuft be- 
neath; third nearly as long as the second; antennae slender, a little 
shorter than the body ; abdomen and hindwings cinereous ; tarsi 
blackish, with whitish rings ; forewings on the costa and in the 
disk with several black dots, which are variable in number and in 
size. Length of the body five to six lines ; expansion of the tore- 
wings twelve to thirteen lines.” These long, thin, brown Moths 
are very abundant, and many other species doubtless exist in the 
Island. 
*T. binotatella, Walk.— The following is Mr. Walker’s descrip- 
tion of this species : — “ Brown, shining, cinereous beneath ; front 
broad, rounded ; palpi as long as the breadth of the head ; second 
joint clavate ; third shorter than the second ; hind tibiae with a 
long, thick tuft of hairs ; forewings with a black spot in the disk 
at somewhat beyond two-thirds of the length. Length of the body 
three lines ; expansion of the forewings nine lines.” 
The larva of this moth is well known in the Island as the Potato 
Worm. It is a small, translucent, maggot-like creature, of a dirty- 
whitish hue, marked with four longitudinal rows of small brown 
spots, and having a few long fine hairs on its body. In length it 
varies from a half to three-quarters of an inch. The head is hard, 
and of a chocolate-brown colour, and the little creature moves back- 
wards quite as easily as it does forwards. It abounds in the 
Island, and is a thorough pest to the potato crops. Either the eggs 
are laid in the potatoes, or the larva enters them in an early stage 
of its growth, and, through its depredations, render’s them quite 
unfit for food. When changing to the pupa state, it wraps itself 
up in a strong web, in the form of a close, tough envelope, and the 
chrysalis is of a light mahogany colour, with the positions of the 
wings and legs, even in its early stage, strongly marked longitudi- 
nally down the outside of the case or skin. 
*T. subseneella, Walk. — Another native species, of which Mr. 
Walker gives the following description: — “Cinereous. Head, 
thorax, legs, and forewings above aeneous brown; palpi rather 
stout ; second joint with a short fringe ; third shorter than the 
second. Length of the body three lines ; expansion of the forewings 
seven lines.” 
