360 Mr. Newport o?i the Class Myriapoda, Order Chilopoda. 



rugosis margine parum undulatis : postice angustatis rotundatis profunde emarginatis 

 subdepressis, pedibus postremis corpore triplo longioribus ; metatarso femore tibiaque 

 tarso plus duplo, articulo metatarsali prirao secundo tertia parte, secundo tertio duplo 

 longiore. — Long. lin. 8. 



Cerm. Smithii, Newp. I. c. p. 96. 



Hab. In Sinu Insularum Novae Zealandiae. (v. in Mus. Brit.) 



This is the first species of Cermatia obtained from New Zealand, and agrees 

 precisely in its general characters with those from Africa and Asia. 



Family 2. Lithobiid.e, tnihi. 



The species of the genus Lithobius of Leach have many marked characters 

 that distinguish them at once from the Scolopendridie, with which they have 

 hitherto been connected. I have therefore separated the Lithobii as a distinct 

 family. 



The Lithobiidce, the common Centipedes of this and most of the northern 

 countries of Europe (Tab. XXXIII. fig. 27 to 34 ; and Tab. XL. fig. 2 and 3.) 

 have the cephalic portion (a) of the head very broad, depressed, cordate, and 

 almost covering the basilar portion, which exists only as a short narrow ring 

 (b, c). The eyes (*) are stemmatous, and vary in number and magnitude; 

 and the antennae are setaceous, elongated, and formed of a multitude of short 

 joints (d). The mandibles (g) are large and forcipated : the labium (b } c) is 

 broad, extended forwards, and divided by a deep median sulcus, and armed in 

 front (e) with distinct minute teeth. The body is formed of sixteen imbri- 

 cated, depressed, alternating, long and short segments (fig. 33.), that have the 

 posterior margin straight, or slightly excavated, and the angles of the ninth, 

 eleventh, thirteenth and fifteenth are acute and elongated. The seventh and 

 eighth segments are quadrate, and nearly equal. There are fifteen pairs of 

 legs ; the four posterior pairs are much lengthened, and their coxce (fig. 34 a) 

 have each a deep, elongated oval, transversely furrowed excavation f on their 

 under surface. The males are usually larger and more robust than the females, 

 and have the head much broader ; and the anal segment of the body is trun- 

 cated (Tab. XXXIII. fig. 34.), and has a single pair of minute styliform 



t This was first noticed in the common Lithobii of this country by Mr. Walker (' Entomologist,' 

 Jan. 1842, p. 239). I have since found it in all true Lithobii from every part of the world. 



