Members in Spiders and Insects. 4:25 



the reproduction is gradual, and unconnected with moulting. Bonnet 

 mentions distinctly that newts, both young and full grown, cast several 

 successive skins; and adds, that reproducing limbs throw off the 

 epidermis as well as the original: but he never even hints that 

 there is the slightest connexion between the two processes, and both 

 by description and drawings proves that with them the reproduction is a 

 gradual growth, not a new operation. In one of the scientific journals 

 some time back there was a very elaborate and interesting paper on the 

 " Aquatic Salamander," by a gentleman whose name has at the moment 

 escaped me. I do not remember whether he agreed with Bonnet upon 

 the subject, but my impression is, that there was at least nothing contra- 

 dictory in his conclusions. I shall be glad to be set right upon this sub- 

 ject, for if it be clearly established, that with a certain class of animals 

 reproduction takes place solely in connexion with moulting, and as long 

 only as they are in an immature state, and that it consists in a new for- 

 mation, not a growing or shooting out of the original parts — and that 

 in another class it is independent of the periods and changes of the im- 

 mature state, and strictly and truly a gradual, observable reproduction, 

 not a sudden new creation — two very well-defined and interesting divi- 

 sions will be established ; and instead of the reproductive power being 

 confined to a comparatively small number, viz. those in which it is in- 

 dependent of age, and gradual, it will perhaps prove to be the property, 

 under certain modifications, of a great many more of the animal king- 

 dom than has hitherto been suspected, for that it is not confined to those 

 which have the prerogative of throwing off a member is evident in the 

 example of the cock-roach. Another in passing from the pupa to the 

 perfect state has since reproduced both antennae : and apupaof jRerfwvtW 

 has done the same. The following are the particulars : — 



1. 

 July 25. A larva of Blatta Maderce. — Both antennae amputated, with a 



little of their base. 

 Aug. 8. Has moulted and become a perfect insect, and reproduced 



two short, unequal antennae, more rigid and less taper 



than the original ones, and curled at their extremities. 



They have not an equal number of joints : in one I caa 



