Mr. G. Newport on new species of Myriapoda. 95 



these it is now difficult to distinguish. Many of those described 

 by Leach are in the cabinets of the British Museum, and thus 

 enable us to obtain the most accurate information. The Museum 

 cabinets also contain many species that were entirely unknown to 

 Leach, and which have remained undescribed up to the present 

 period. These specimens I have examined and named ; and many 

 months ago, at the request of the head of the Zoological Depart- 

 ment, J. E. Gray, Esq., attached my manuscript names to them, 

 intending to publish a full description of them at my earliest 

 convenience. A list of these names, with notes and synonyms, 

 has recently been prepared, with my assistance, by Dr. Hamel, 

 to be transmitted to Professor Brandt, who also is engaged on 

 this class ; and perhaps a similar list of the whole species in the 

 Museum cabinets, with short descriptions of the new species, may 

 not be unacceptable to the British naturalist. 



Some of the structures from which I have drawn my descriptive 

 characters have not hitherto been made use of for identifying spe- 

 cies, but, nevertheless, they offer some of the best and most cer- 

 tain distinctive marks. The chief of these are the number of the 

 ocelli in adult specimens, and the number and form of the labial 

 teeth. Both of these structures usually present some differences in 

 the different species. Besides these parts I have also employed 

 those pointed out by Brandt, — the form of the posterior legs, and 

 the number and arrangement of their spines. These parts taken 

 together afford good characters. An examination of the few re- 

 maining specimens of Linnaeus, still existing in the Linnsean ca- 

 binet, has enabled me to identify some of the Linnsean species, 

 and has required the names of some of Dr. Leaches species to be 

 changed ; but whenever this is done in the following list. Dr. 

 Leaches synonym is also added. I ought here to state that Dr. 

 Leach had not access to the Linnsean specimens. 



Class MYRIAPODA. 



Order L CHILOPODA. 



Genus Cermatia, Illiger, Leach. 



1. C. coleoptrata; C. Uvida, heach. Madeira. 



2. — var. Floridensis, mihi. Florida. 



3. — rugosa, mihi. Scutella roughened, with a single dark-coloured 

 fascia, with three fasciae on the first tibial joint. Africa. 



4. — nohilis, Paterson. Ceylon. 



5. — Hardwickei, mihi ; C. longicornis, Hardwicke. This is not the 

 longicornis of Fabricius. 



6. — longitarsis ? mihi. Scutella greenish, with a single light- 

 coloured fascia ; posterior legs thrice as long as the body. 



7. — duhia, mihi. Scutella with a median fascia, and two dark- 

 coloui'ed patches on the posterior margin ; basilar tarsal joint very 

 long. 



