32 



ON THE CIIILOPODA OF NORTH AMERICA. 



extimis sejunctis; pedibus compressis; pari postrcmo subcylindrico, gracili ; articulo basali tibial! 

 lon<»iore, supra subcomplanato, intus subtusque bis vel trispiuoso, processu angulari elongato, cur- 

 vato, quadrispinoso, artieulis tibiali et tarsali fere sequalibus; appendioibus analibus rude punctata, 

 apieibus clongatis, acutis, bispinosis; squama preanali elongata, fere subtriangulari, medio canaliculato. 



Scuto-episcutal sutures traceable, sterno-episternal well marked. This species 

 differs from the preceding in the head not being so large ; the mandibles and their 

 teeth are also smaller, whilst the labial teeth are larger and more distinct. The late- 

 ral anal appendages are likewise very different, their apices being prolonged, acute 

 and scarcely curved downward at all. The three spines on the inferior aspect of basal 

 joint of posterior legs are arranged in a single row on its exterior portion. It is barely 

 possible that a suite of specimens would show that we have confounded two species. 



179 

 176 



Sandwicb Islands. 

 Oahu, or Kaiu. 



U. S. Expl. Exp. 



Unc. 4 

 " 3J 



S. dinodon, Wood, Proo. Acad. Nat. Sc. 1861, p. 12. 



185 | 1 | Singapore. | U. S. Expl. Exped. | | Unc. H \ 



S. INSIGNIS, Gervais, Ann. Soc. Entom. 1814, p. 29 ; Apteres, iv. p. 298, pi. 43, f. 4 ; Tabl. des Myriap. 

 (Exp. Amer. de l'Sud sept, part.) p. 32, pi. v. fig. 1. 

 8. insignis, Newp., Catal. British Mus. Myriap. p. 50. 

 S. cpileptica, Wood, Proc. Acad. Nat. Sc. 1861, p. 11. 



151 | 1 | ? | ? | 1 | ? | Unc. 10 | 



S. septemspinosa, Brandt, Recueil p. 60 ; Newp., Linn. Trans. six. p. 391 ; Gervais, Apter. iv. p. 269. 



8. sexspinosa, Newp. in Ann. and Blag. Nat. Hist. xiii. p. 96; Linn. Trans, xix. p. 392 ; Gervais, Apte- 

 res iv. p. 287. 



S. parvidens, Wood, Proc. Acad. Nat. Sci. 1861, p. 13. 



We think that there is scarcely a doubt that S. septemspinosa and S. sexspinosa are 

 identical species. To show our reasons as fully and briefly as possible, we throw the 

 principal specific characters of our specimens into a tabular form, followed by a 

 table of the characters of the two species as given by Mr. Newport. 





No. of spines on 







Spines on 







No. of 



supero-internal 



■Jo. of spines od 



No. of spines on 



angular 



Spines on lateral 



Remarks. 



labial teeth. 



margin. 



nternal surface. 



inferior surface. 



process. 



anal appendages. 





5 



1 



1 



2 



2 



3 



1 



5 



1 



2 



2 



2 



3 



1 Type specimens of S. 



5 



1 



1 



1 



4 



2 



[ parvidens. 



5? 







1 



2 



4 



1 



J 



5 



1 



2 



2 



4 



2 



) No. 36 Smithsonian 

 5 collection. 



5 



2 



2 



3 



4 



2 



6 



1 



1 



2 



2 



2 



1 



5 



2 



1 



2 



3 



2 



[No. 248 Smithsonian 



5 



2 



2 



1 2 



2 



2 



( Collection. 



5 



1 



1 



2 



2 



3 



J 



5 

 5 



2 



2 



9 



2 



9 



1 

 1 





~) S. septemspviosa, 

 [- Brandt, according to 

 ) Mr. Newport. 











5 



5 



1 

 1 



2 

 2 



2 

 2 



2 



2 





S S. sexspinosa, ac- 

 cording to Mr. New- 

 j port. 



