CLASS MYRIAPODA. 



245 



Sub Ord. I. SCHIZOTARSIA. 



Antennae multiarticulata;, corpore multo longiorcs. Scnta singula segmenta duo obtc- 

 gentia. Oculi compositi. Tarsi multiarticulati, longissimi. 



Fam. Schizotarsia, Brandt, Recueil, p. 26. 



Tribe Schizotarsia, Neioport, Linn. Trans., vol. xix, p. 274. 



Fam. 1. CERMATIIDiE. Scuta 8, singula stigmata mediana posticc instructa. 



Fam. Cermatides, Leach, Linn. Trans., vol. xi, 1815, p. 381. 



Fam. ScutigeribvE, Gray, Cyclop. Anat. et Physiol., vol. iii, 1847, p. 546. 



Fam. Scutigerid^e, Gervais, Apt., vol. iv, p. 56. 



Fam. Cermatiid.<e, Newport, Linn. Trans., vol. xix, p. 275. 



Sub Ord. II. HOLOTARSIA. 



Antennae 12 — 60 articulate, corpore haud longiores. Scuta singula segmento unico 

 obtegentia. Oculi simplices yel nulli. Tarsi 3 articulati, breves. 



Fam. Holotarsia, Brandt, Recueil, p. 26. 



Tribe Holotarsia, Newport, Linn. Trans., vol. xix, p. 275. 



Fam. 2. LITIIOBIIDiE. Scuta 15, inacqualia; in seriebus duabus alternantibus dis- 

 posita. 



Fam. LiTiiOBiiDyE, Newport, Linn. Trans., vol. xix, p. 275, et auctores. 



Fam. 3. SCOLOPENDRIDiE. Scuta 21 — 23, in serie unica disposita. Pedum pos- 

 tremorum coxa; magna;, incrassate, armatse. 



Fam. ScolopendridtE, Lead), Linn. Trans., vol. xi, p. 381 (partim). 

 Fam. Scolopendrid/e, Newport, Linn. Trans., vol. xix, p. 275, et Gervais. 

 Fam. SCOLOPENDRIDiE, Gray, Encycl. Anat. Physiol., vol. iii, p. 547 {partim). 



Fam. 4. SCOLOPENDRELLTDiE.* "Corpus pedesque breves, appendicibus styli- 

 formibus. Segmenta inequalia ; scutis 16 dorsalibus imbricatis. Antennas elongate, arti- 

 culis ultra 16." 



* 1 have never seen a specimen of this family, and give the characters assigned by Mr. Newport. 



