390 Mr. Newport on the Class Myiiapoda, Order Cliilopoda. 



lar joint of the posterior pair of legs rather broad, flattened, with the external margin 

 subacute ; internal margin rounded, with three acute spines, the second one placed on 

 the internal surface of the joint ; inferior surface rounded, with two spines on the ex- 

 ternal side ; second or tibial joint narrow, slender, of the same length as the femur. 



There is only a single specimen of Dr. Leach's species in the Museum cabi- 

 nets, and it is worthy of remark that most of the structural characters I have 

 given are to a great extent common to several species which most certainly 

 are distinct. I have been obliged, therefore, to seek a specific character in 

 what appears to have been the original colour of Leach's species ; this is a 

 good guide in recent specimens, but it is difficult to ascertain with precision 

 in dried ones; on this account I have given this part of the character with a 

 slight doubt. 



I must remark also that the right posterior leg of this specimen appears to 

 have been a reproduced one, as the spines on the inferior surface are obsolete. 



26. Scol. Placea, aurantiaca, tarsis scutorumque dorsalium margine posteriori saturate viri- 

 dibus, capite labio mandibulisque rubris, dentibus 10 minutis distinctis, squami prae- 

 anali angusta elongata margine rotundata, pedibus postremis gracilibus. — Long. unc. 5. 



Hab. In Brasilia, [v. in Mus. Brit, et D. Miers.) 



The cephalic segment of this species is subtriangular, cordate ; labium convex, smooth ; den- 

 tal plates short, transverse, distant, with the margin rounded ; teeth ten, distinct, but 

 very small; legs with the metatarsal joints green, tarsal yellow, and claw black. Body 

 elongated and elegantly formed. Posterior pair of legs elongated, with the superior 

 surface of the basilar joint flattened, with three acute spines on the internal margin. 

 Internal surface with two spines which form an oblique ascending series with the su- 

 perior apical spine. Inferior surface rounded, with two spines; second joint slender, 

 compressed. Preanal scale subtriangular, elongated, margin rounded. Lateral anal 

 appendages with the apex elongated and acute. 



This species resembles S. subspinipes. 



27. Scol. Gervaisii, capite mandibulls labio appendicibusque analibus lateralibus saturate 

 rubris, segmentis ferrugineis marginatis, pedibus antennisque flavescentibus, laminis 

 dentalibus rotundatis ; dentibus conspicuis, pedum pari postremo elongate spinis tribus 

 acutis quarum secunda prope articulationem tibialem. — Long. unc. 5|. 



Scol. subspinipes? Gerv. in Ann. Sci. Nat. Janv. 1837. Brandt, Mem. Ins. Myriap. p. 59. 



Lucas, Hist. Nat. Anim. Art. t. iv. p. 544. sp. 5. 

 Hab. In Brasilia, {v. in Mus. Brit.) 



