INSECT CLIMBERS. 189 



swimmer to accomplish his restless or ambitious purpose. This 

 is effected, it would seem, by help of his spiny fins and gill- 

 covers. 



Now a climbing chrysalis, as all must be ready to admit 

 who know a chrysalis by sight, is a thing of scarcely less won- 

 drous seeming than a climbing fish ; and we find, in some 

 instances, that the apparatus by which a chrysalis is assisted 

 to climb, or raise itself upwards towards the surface, or from 

 out the ground or other imbedding substance, is of a some- 

 what similar description to the spines of the above-mentioned 

 tenant of the waters. To give an instance. 



The Goat-moth, whose works, as a carpenter caterpillar, in 

 heart of oak or willow we have elsewhere noticed, has a chry- 

 salis which, as well as some others, is furnished with a row of 

 spiny serratures, extending nearly round each ring of its body. 

 The use of these appendages becomes sufficiently apparent when 

 opportunity offers (as it has done with ourselves) of watching 

 the emergement of this case-bound creature from out the 



o 



strong cell of cemented woody particles in which it is usually 

 enclosed. A hard head, armed with points, having first 

 enabled it to open, as with a battering-ram, a breach in the 

 wooden walls of its prison, the swathed moth is then assisted 

 by the purchase of its spiny case to draw itself more than 

 half-way through the opening, wherein it remains tightly 

 wedged, while the aurelian skin, bursting at the shoulders, 

 gives egress to the winged form. 



