212 THE CANADIAN ENTOMOLOGIST. 



spots. Spiracles small and whitish. The cervical shield covers the 

 upper half of joint 2, is smooth and wine red. Length of larva 20 mm. 

 When disturbed, it ejects from its mouth a large quantity of dark red 

 fluid. 



Fifth Larval Stage. — Mature larva. Head pale brown, blackish 

 around the mouth with a large round orange spot before the eyes. It is 

 granulated and pilose, the hairs small, and appearing frosted on the upper 

 part of the head. Width 6 mm. The body is much contracted, and 

 much smaller at the extremities. Cervical shield pale brown, smooth, 

 hidden when the insect is at rest. Joint 2 is pinkish below. The body 

 is bright frosted white, thickly covered by little circular depressions, in 

 the centre of each of which is a minute frosted hair. These hairs are 

 longer on the anal plate, and the depression there less deep. Thoracic 

 feet pale brown. Venter and abdominal feet white, without the marks of 

 the dorsum. Length of larva 40 mm., greatest width of body 12 mm., 

 greatest height 10 mm., width of joint 2 4.5 mm. Its place of conceal- 

 ment, at this stage, is formed of several leaves spun together and lined 

 with silk. Immediately after the moult, the body is colored as in the 

 previous stage, but the white color appears gradually in the course of 

 several days. 



The leaves the larva has spun together serve as its cocoon, and the 

 pupa is held by several transverse threads around the body, with the 

 cremaster fastened in others. 



Pupa. — Robust; abdomen large, eyes prominent. Two short pro- 

 minences on the head between the eyes. The leg and antenna? cases 

 form a point extending below the wing cases. Cremaster excavate below, 

 with ridges at the sides above, curved downward, blunt, and terminating 

 in a number of brown hooks. The pupa has many small, rounded de- 

 pressions, and is minutely pilose. Color creamy white, a greenish tint 

 on the thorax and cases, and a yellow stripe on the upper part of the eye. 

 Length 32 mm., diameter of the abdomen 10 mm., diameter of thorax 9 

 mm,, width through the eyes 6 mm. 



Food Plant. — Mangrove, Rhizophora viatigle; larvae from Dade Co., 

 Florida. I am not sure that the larval stage here first described is the 

 third, but consider it most probable. 



Mailed October 6th. 



