Bibliographical Notice. 231 



Fir/. 7. Scolopendra (?) cuivis, sp. n. Nat. size. 



Fir/. 8. Cormocephalus cupipes, sp. n. Anal somite, upperside. 



Fig. 9. Cormocephalus inermipes, sp. n. Anal leg, from above. 



Fig. 9 a. Ditto. Prosternal plates. 



Fig. 10. Cormocephalus dentipes, sp. n. Anal leg, internal view. 



Plate V. 



Fig. 1. Arthrorhabdus formosus, gen. et sp. nov. Head, dorsal view. 



Fig. 1 a. Ditto. Anal somite, from below. 



Fig. 1 b. Ditto. Anal somite, from the side. 



Fig. 1 c. Ditto. Femur of anal leg, from iuner side. 



Fig. 1 d. Ditto. Stigma of third somite. 



Fig. 2. Pithopiis inermis, sp. n. Head, dorsal view. 



Fig. 2 a. Ditto. Anal somite, from below. 



Fig. 2 b. Ditto. Anal somite from the side. 



Fig. 2 c. Ditto. Femur of anal leg, from inner side. 



Fig. 2 d. Ditto. Stigma of third somite. 



Fig. 2e. Pithopus calcaratus, sp.n. Tarso-metatarsus of twentieth somite. 



Fig. 3. Pseudocrgptops Walkeri, gen. et sp. nov. Head, dorsal view. 



Fig. 3 a. Ditto. Anal somite, from below. 



Fig. 3 b. Ditto. Anal somite, from the side. 



Fig. 3 c. Ditto. Stigma of third somite. 



BIBLIOGRAPHICAL NOTICE. 



The Birch of Norfolk. By Henry Stevenson, F.L.S. ; continued by 

 Thomas Southwell, F.Z.S. 3 vols., 8vo. Norwich and London, 

 1866-90. 



However it is to be accounted for, the fact remains that in no county 

 of England has natural history been more assiduously, and there- 

 fore more successfully, cultivated than in Norfolk. The assiduity is 

 a point on which we would especially dwell, since we live in days 

 when what passes for work is knocked off as though speed were its 

 only test and the quality of the " output " a matter beneath the 

 notice of the modern biologist. But it has yet to be proved that 

 what is known in another branch of art as "jerry-building" will 

 pay in the end when applied to authorship ; and from our own point 

 of view, perhaps rather antiquated, we are inclined to say that it will 

 not. We seem to have heard not so very long ago of a heaven-sent 

 genius, who, having applied himself (except when he was otherwise 

 engaged) for a couple of years to a line of study entirely new to 

 him — it was a portion of the anatomy of a particular class of the 

 animal kingdom — was at the end of that time enabled to set the 

 subject in a wholly different light ! That he did so we can readily 

 believe ; but we might put beside it the fact that other men, who 

 had received no spiritual commission and were perhaps only 

 plodding slaves of the scalpel, had employed themselves on the same 

 inquiries ten or even twenty times as long, and yet had failed to 

 arrive at conclusions they would feel warranted in laying before the 



