172 



THE MYRIAl'ODA OF NORTH AMERICA. 



Gen. 8. SCOLOPOCRYPTOPS, Neap* 



Ocelli nulli, scmenta podophora 23, postremum angustum ; segmentum ccphalicuru imbricatura. Labium 

 edentulum. Antennae 17 articulatse. 



Eyes none; feet-bearing segments, 23 ; the last narrow; cephalic segment imbricate. Labium edentate. An- 

 tennae, IT articulate. 



Fig. 12. 



Fig. 13. 



S. SEX8PINOSA. 



S. saturate aurautiaca ; pedibus flavis, subcompressis ; antennis flavis, intcrdum aurantiaeis, pubescentibus ; 



capite labio mandibulis scutis sternisque punctatis; segmento cephalico 

 subovato ; labii margine antico fere recto ; scuto postremo angusto, longo ; 

 pedibus postremis elongatis, baud pilosis; articulo basali tibiali longiore, 

 spina unica magna in superficie inferiore et altera minore medians in 

 margine superiore interno et rare altera articulari minutissima; appendi- 

 cibus analibus lateralibus valde elongatis, profunde dense punctatis, singula 

 spina apicali unica alteraque minutissima in angula superiore posteriore ; 

 squama preanali postiee vix emarginata. (Fig- 12.) 



Deep orange; feet yellow, somewhat compressed; antennae yellow, 

 sometimes orange, pubescent; head, labium, mandibles,'scuta, and sterna punctate; cephalic segment subovate; 

 anterior margin of the labium ( Fig. 13) nearly straight; last scutum narrow, long ; last feet elongate, not pilose ; the 

 basal joint longer than the tibial, with one large spine upon its inferior surface, and another smaller median on its 

 inner superior margin, and rarely a third very small articular; lateral anal appendages very elongate, densely pro- 

 foundly punctate, each with a single apical spine, and another very minute one upon their superior posterior 

 angle ; preanal scale posteriorly scarcely emarginate. 



Cbyptops sexspinosus. S<iy, Journ. Acad. Nat. Sci., ii, p. 112, 1S21 ; Id. (Lequien ed.) (Euvres Entom. i, 



p. 24; (iervais, Ann Nat. Janvr., 1S37, p. 51. 

 " " Lucas, Hist. Nat. Anim. Art., p. 547. 



" " Newport, in Ann and Mag. Nat. Hist., xiii, p. 100. 



SrjOLOPOCRYP. SEXSPINOSA, Newport, Linn. Trans., xix, p. 407. 



" " Gervais, Apt. iv, p. 297, et Tabl. Myriap. Amcr. ( Exp. Ameriq. de Sud, part. 



scjit.), p. 36. 

 " Wood, Journ. A. N. S, 1863, p. 37. 



In this species the superior spine of the lateral anal appendages is very minute, and 

 occasionally present only on one side. The color varies from milk-white to a dark reddish 

 orange. The Lighter shades are found in those individuals which have recently shed their 

 skins. The color given in the diagnosis may he considered as that which characterizes the 

 species, being the one to which it finally attains. The inferior surfaces of the posterior 



' I. inn Trans , vol. xix, pp •!'■<, 105 



