The legs are well developed and the insect is capable of quite rapid 

 locomotion notwithstanding the unwieldiness of the enclosed hind-body 

 which is usually sustained at an angle of forty-five degrees and sometimes 

 almost vertically. 



I have found the Cohophorce rather difficult to rear and this is es- 

 pecially the case with the single brooded species that can be collected 

 only in autumn. These must be preserved not only over winter, but 

 through the still more trying months of spring and summer often late 

 into September and October. During all this time the entomologist 

 must continually guard these objects of his care from excessive heat, 

 mould and mites. 



All Gdeophora larvae are averse to dampness and yet a certain 

 amount of moisture about the time of their final tranformations seems 

 to be necessary to their complete development. 



For four or five successive years I have collected and cared for the 

 larvae of a certain species which may be found in September and October 

 on the seeds of Chenopodium album. The cases of this species are at first 

 conical and are carried in an almost erect position, but at maturity be- 

 come somewhat fusiform and considerably curved at the anterior end. 

 The average length is o 20 inch, the texture peculiarly firm with an ir- 

 regular roughened and mottled surface which closely imitates the dull 

 black, whitish green and pale brown of the ripening seed cases of the 

 Chenopodium. 



The head and narrow cervical shield are polished pale-brown in- 

 distinctly mottled with a darker shade of the same color. Thoracic seg- 

 ments beautifully ornamented with curved and wavy lines of crimson 

 on a pearl-white ground ami the long and slender legs are similarly 

 marked. When removed from the case the hind body is found to be of 

 a pale-green or greenish-white color, depressed cylindrical form and with 

 a very soft and easily ruptured integument. The prolegs are of the 

 normal number but reduced to simple circlets of minute hooks. Supra 

 mal plate dark fuscous, horny and edged with short stiff hairs. 



On the dorsum of the seventh segment, in many of the larvae exam 

 ined, were a pair of dark spots each one with two points projecting 

 toward the medio-dorsal line. The nature of these marks ororgans I have 

 not yet ascertained. 



Growth is usually complete by the middle of October and the larva 

 then either desert their food plant entirely or attach themselves to the 

 main stalk. Here they remain ten or eleven months and sometime s 1 ven 



r in a state of semi-dormancy. '1 hat they are not complete]) dorm- 

 ant is evident by the fact that if forcibly loosened from their place! 

 disturbed by the pressure of any other bod or ifth< 



