23 



is a row down the middle of the back, and one on each side, and on the under surface 

 there are sometimes two additional rows of smaller dots. 



Although this insect is so common and well known in its larval condition, it is not 

 often seen on the wing. It flies at night, and being seldom attracted by lights, it rarely 

 finds its way into our houses. It is also subject to the attacks of ichneumons, which des- 

 troy some of the caterpillars before they reach maturity. 



In the J uly number of the Canadian Entomologist, Mr. 0. S. Westcott, of Chi- 

 cago, names two species of these ichneumons, which he has bred from cocoons of Isabella. 

 They are Ichneumon signatipes, Cresson, and Trogiis ohsidianator Brulle. 



Arctia Saundersii. — Grote. 



This is the name of another of our tiger 

 moths, a very handsome creature, not so common 

 as that last described, but much more beautiful, 

 see fig. 16. 



The antennae are black, with a brownish tinge. 

 Head, flesh coloured above, black at the sides ; the 

 thorax pinkish buff" with five black spots, two 

 small ones in front, and three larger ones behind 

 t'lem. 



The fore wings are black, with many pale flesh coloured stripes ; the front margin, 

 the veins and their branches, are narrowly striped. There is a central longitudinal linear 

 stripe across the wing above the middle, and a wider one having its origin at the base im- 

 mediately under the Imear stripe, and deflected from thence to the hind margin where it 

 is forked. There is a zigzag band something like a W across the outer edge ; there are 

 also two or three cross stripes, the middle one being most conspicuous, and usually forked. 



The hind wings are pale reddish bufi", sometimes much deeper and brighter in colour, 

 with five or six black spots, one towards the middle of the wing, the others arranged along 

 the hinder margin, where they form an irregular band. The fringes of the wings are 

 whitish. 



The under surface of both wings is paler, with the markings less distinct. The up • 

 per surface of the body is reddish, with an irregular black band down the middle of the 

 back ; the under side is dark brown, with many whitish hairs. When the wings are fully 

 expanded this moth measures from one and a-half to one and three quarter inches. 



It appears upon the wing early in July, is inactive and remains hidden during the 

 day, but flies into lighted rooms at nights, where it may frequently be found resting on 

 ceilings and walls during the day. During the month of July they seek their mates, and 

 after this the female lays her eggs, usually on some low- growing plant, where they soon 

 hatch into small hairy caterpillars. After attaining about half or less than half their 

 growth they stop feeding, and seek some sheltered and safe hiding-place where they hy- 

 bernate for the winter. Awakening in spring they feed readily on almost any green thing 

 which may come within their reach, eating during the night, and hiding under logs and 

 chips and stones during the day. They attain fall growth early in June, when they meas- 

 ure from an inch and a quarter to an inch and a half in length. The head is small and 

 black, reddish at the sides ; the body above dull black, rather glossy, with a slight reddish 

 tinge , on each segment there is a transverse row of black tubercles emitting tufts of stiff, 

 bristly hairs of the same hue ; the hairs on the two hinder segments are longer than those 

 on the others. There is a faint whitish dorsal line from the head to the third segment, 

 and another faint mark of the same colour on the terminal segment, Tlie under surface 

 is dull red, the feet and prolegs of the same colour. 



About the middle of June these larvae seek some suitable spot, where gathering to- 

 gether a few bits of dried leaves or other rubbish, and uniting them with silken threads, 

 under this slight enclosure the change to a chrysalis takes place, when the hairy covering 

 is shed, revealing a nearly smooth dark brown pupa. After remaining in this inactive 

 condition about a fortnight the perfect insect makes its escape, appearing in all its gay and 

 attractive colours. 



