1G2 Mr. M. Burr on new Species o/'Forficularia. 



mode of selection has played a great part in the perfecting of 

 the regenerated limb. I have been able to remark, in fact, 

 that the regenerated portions were so much the more perfect 

 according as the amputations had been performed with greater 

 regularity and the hemorrhage had been less copious. When 

 the limb is cut off somcAvhat obliquely, the result is a terato- 

 logical regeneration with tarsal joints missha))en and but 

 little distinct one from another. A limb so imperfect as this 

 almost always becomes detached from the body at the next 

 ecdysis. The same applies to the limbs mangled by the 

 teeth of the enemies of the Phasmids. Here, then, we have 

 a real selection effected by the ecdyses, and 1 propose for it 

 the term exuvial selection. 



XXIV. — Further neio Species o/' Forticularia. 

 By Malcolm Burr, F.E.S., F.Z.S. 



In the following ])aper four new Forjicularia are described, 

 of wliich three were taken in Ecuador by Mr. Rosenberg and 

 the other in Java by Herr Friihstorfer. Two of the species 

 from Ecuador will later require a new genus, but the material 

 at hand is barely sufficient for the purpose. These two are 

 considered by M. de Bormans, to whose examination I have 

 submitted all the species described, to be identical ; but 

 several small characters, worth little in themselves, but of 

 cumulative value taken together, have induced me to regard 

 them as sej)arate, though closely allied. 



1 take this op})ortunity of impressing collectors abroad with 

 the necessity of packing earwigs with extreme special care, as 

 I have at least a dozen novelties in my collection that I am 

 unable to describe, as they are mutilated ; for the slightest 

 accident may destroy a valuable character. Of others also I 

 possess only females, which it is highly undesirable to 

 describe without the male. 



The number of undcscribed earwigs still existing in collec- 

 tions is probably very large ; M. de Bormans has informed 

 me that he alone has no less than sixty novelties. 



I seize the occasion to express my thanks to this ento- 

 mologist for the assistance he has very kindly rendered me 

 in examining my types, communicating descriptions of sexes 

 which 1 do not possess, and for much valuable information. 



1 have taken the measurements as follows : — of the body, 

 from the mouth to the apex of the anal segment ; of the 



