302 REPORT ON ZOOLOGY, MDCCCXL1V. 



Solifugae), and demonstration in their nerves not being derived from the 

 brain. 



Another misconception of the author is his treating the tongue (ligula) 

 and side lips (paraglossae) as analogous to the jawblades (malse.) The 

 Reporter has shown, in the essay referred to before, that the Orthoptera 

 alone possess corresponding appendages of the under lip, but that these do 

 not represent the tongue and side lips of other insects, since the tongue 

 exists distinct and separate in this order. Not less improperly is the chiu 

 (rnentum) considered to represent the haft (stipes) of the under jaws. The 

 only parts which answer to the latter are the lip palps (palpi labiales), with 

 their steins (stipites). In consequence the author goes too far in arguing, 

 by analogy from the structure of the under lip, that the upper lip (labrmn) 

 also represents a pair of jaws soldered together. (A shorter notice of this 

 essay in Compt. rend, xviii, 233 ; Frorieps N. Notiz. xxxi, 309.) 



Newport (Philos. Trans. 1844, p. 283) has made experi- 

 ments, with instructive results, on the reproduction of lost 

 parts in Myriapoda and Insecta. 



The power of restoring lost limbs has long been known to exist in Arach- 

 iiida and Crustacea, and among Insects with incomplete metamorphosis, 

 the like had been observed with respect to Phasma. The author had, on 

 a former occasion, exhibited to the Entomological Society a Scolopeiidra 

 with a leg on one side smaller than the corresponding one of the pair, bul 

 no certain conclusion could be drawn whether the organ had been repro- 

 duced or crippled in its first formation. To determine this point he made 

 the following experiments. A young Julus was mutilated in the legs and 

 autenme, and shut up with others. After a few weeks, when they had cast 

 their skin, the mutilated one could not be distinguished from the others. 

 After this three more, not full grown, were shut up together, an antenna 

 and some of the legs having been cut off in each. Tor more than three 

 mouths after there was no appearance of a reproduction, till the time that 

 they severally formed a hollow in the earth, in which to remain dormant from 

 the middle of June to the end of July. Towards the close of this period 

 they changed their coat, and when the individuals which had been so treated 

 appeared above ground again, the lost parts were restored, but shorter, 

 smaller, and lighter in colour than the uninjured limbs. 



Of the Chilopoda, the author observed a Lithobius which had lost some legs. 

 At the next change of coat they were reproduced, not in the form of 

 stumps like the legs at their first formation, but very tender and much 

 smaller than the rest. They continued to grow, however, for a little while 

 after the skin was cast. After the next moult they had grown visibly, 



