21 8 



THE MYRTAPODA OP NORTH AMERICA. 



SiMicK.xus I'AltADKHMUH. 



Dorsum modice convexum. Lamina} laterales magnse, — horizonti ad libellam respondentes. 

 Dorsum convex. Lateral laminae large, horizontal. 



1'. ERYTHROPKtUS. 



1'. olivaceo-castaneus; scutis postiee aurantiaeo maeulatis ; laminis lateralibus aurantiaeis; scuto anale vix tri- 

 angulares appendicibus masculis modice robustis, spina tcrminale gradatim curvata, spinulo breve lato acuto 

 annate, ultima bifida. (Fig- 46.) 



Olive-chestnut; scuta posteriorly maculate with orange; lateral laminae orange ; anal scutum scarcely triangular ; 

 male appendages moderately robust ; their terminal spine gradually curved, distally bifid, armed with a short, 

 broad, acute spine. 



P. ERYTiiaopyaus, Brandt, Recueil, p. 134. 



" Oervais, Suit, a Buffon, Aptercs, vol. iv, p. 106 ; Exped. L'Amer. du Sud (Castelneau), 



Myriapoda, p. 6. 

 " Saussure, Mem. Soc. Nat. Hist. Geneva, vol. xv, p. 290. 



P. Oarolinensis, Saussure, Mem. Soc. Nat. Hist. Geneva, vol. xv, p. 295. 



" Gervais, Exped. L'Amer. du Sud (Castelneau); Myriap., p. 14. 



The general color of tins elegant species is an olive-chestnut; in some individuals the 



olive overpowering the other tint, and approaching some- 

 times to a slate color ; in others the chestnut predomi- 

 nating. The color is not uniform, it shading darker and 

 darker towards the maculae. The latter are somewhat 

 semicircular, bright orange, and placed on the posterior 

 margin of the scuta. In most specimens there is a well- 

 marked, black dorsal line. The vertex furrow is strongly 

 pronounced. The anterior surface of the head has a pair 

 of almost obsolete punctiform impressions, and is scarcely emarginate. The antenna 

 are coarsely pubescent, and not clavate. The first scutum frequently has an orange 

 spot on its anterior margin. The last scutum has its posterior portion very broad, 

 thin, and of an orange line. The lateral laminse are larger than in P. hispidipes ; and 

 their edges, though thickened, arc not so much so as in that species. They are bright 

 both on their upper and under surfaces. The feet are somewhat hairy, and, with the 

 under surface of the body, of a dull-yellow color. The terminal spine of the male appen- 

 dages has something of .the swan-neck curve ; on one of its surfaces there is a thorn-like 

 spinule; distally it is shortly bifid. The female appendages (Fig. 47) are composed of a 



Pig. 46. 



Pig. -17. 



