1886.] Xi J [Meinert. 



racles is said to be 19 on each side, but in the other genera no 

 more than 10 pairs are found. 



I. Segmenta pedifera 23. 



1. Gen. Scolopocryptops. 



Scolopocryptops Newport.* Trans. Linn. Soc. Lond., xix, p. 407. 



Lamina cephalica larninani primani dorsalem partim obtegens. 



Oculi null:. 



Antennae tenuiusculos, subfiliformes, 17-articulatse. 



Labri fimbria longa, intus e setis ad apicem fissis facta. 



Labii processus subteretes, barba e setis partim fissis facta instructi ; 

 palporum fimbria e setis paulum uncinatis vel cl a vat is facta. 



Palpnrum maxillarium unguis in latere interiore dentibus 13-15 mani- 

 festis armatus ; fimbria digitalis unguem procul explens, setis parum 

 uncinatis. 



Mandibular ante pectinibus 8 juxta et pone lamellam singulum, latam, 

 dentatam coarctatis instructs. 



Metameri quarti sternum integrum, robustum; prosternum parum promi- 

 nens subtruncatum, vel in angulos breviores productum ; pedes prensorii 

 articulo secundo et tertio minimis, interrupts. 



Segmentum septimum absque spiraculis. 



Spiracula profunda, magna, subrotunda vel breviter ovalia, perpen- 

 dicularia. 



Pleura? posticaa infra porosoe, in spinam longam post productse. 



Pedes anales elongati, quinquearticulati, articulo primo(femorali) spini- 

 gero, ungue minus curvato, subgracili, ad basis unguiculis binis minimis 

 armato. 



1. Scolopocryptops sexspinosus. 



Cryptops sexspinosus Say, Journ. Acad. Nat. Sci. Pbilad., ii, p. 112. 

 Scolopocryptops sexspinosa Newport, Trans. Linn. Soc. Lond., xix, p. 407. 

 Gervais, Walckenaer Ins. Apt., iv, p. 297. 



Wood, Journ. Acad. Nat. Sci. Pbilad., new ser., 



v, p. 37. 

 Wood, Trans. Amer. Phil. Soc, xiii, p. 172. 

 Kohlrausch, Arch. f. Naturg. Jahrg., 47, p. 54. 

 Porath, So. Vet. Akad. Handl. Bih., B. 4, p. 26. 

 Scolopocryptops spinicauda Wood, Journ. Acad. Nat. Sci. Philad., new 



ser., v, p. 39. 

 Wood, Trans. Amer. Phil. Soc, xiii, p. 174. 



*This name is formed by Newport against the chief rules of nomenclature; 

 yet it has always been received, and therefore I also shall make use of it. 



