Mr. Newport on the Class Myriapoda, Order Chilopoda, 417 



This is a very distinct species, readily identified. It has the basilar segment large, but nar- 

 j rowed posteriorly ; mandibular tooth small ; dental plates large, with the external angle 

 : elongated, twisted and punctured ; teeth six, very large, black, acute, triangular, ser- 

 rated on the margins, and with deep longitudinal sulci. Basilar joint of the posterior 

 pair of legs with five black, acute, alternating spines on the internal superior margin, 

 and six, arranged in two longitudinal series, on the inferior surface, three in each 

 series ; those of the inner one irregular. Lateral appendages slightly elongated, with 

 the apex bifid, and a single spinula on the inferior margin, with five on the upper. 

 Preanal scale subquadrate, narrowed posteriorly, with the margin slightly excavated. 



7. Heter. flava, corpore pedibusque laete flavis, segmento cephalico viridi, antennis auranti- 



acis, dentibus 6 minutis nigris, pedum postremorum articulo basali gracili subquadrato 

 tibia longiore in superficie interiore spinis 5 nigris armato. — Long. unc. 3, 

 Hob. In Nova HoUandia, ad fluvium Cygnorum. {v. in Mus. D. Hope.) 



This species is allied to H. sulcicornis, but differs in having the posterior legs longer and 

 more slender, and the spines larger, more acute, slightly hooked, and of an intense 

 black. Those on the superior margin are arranged in equidistant alternating series. 

 On the inferior surface there are six spines, three of which form a single longitudinal 

 series on the external, and three on the internal margin ; the middle one of the latter 

 coalescing at its base, with the corresponding one in the outer series. The lateral anal 

 appendages have each two spines on the side, and from three to four small ones on 

 the superior edge. The preanal scale is subquadrate, with the border sUghtly emar- 

 ginated. 



8. Heter. megacephala (Tab. XL. fig. 9.), corpore brevi olivaceo, capite magno convexo, 



antennis mandibulis labio appendicibusque analibus lateralibus rufescenti-olivaceis, 

 dentibus 6 triangularibus acutis, pedum postremorum articulo basali tibiali longiore : 

 spinis in margine interiore 5 longis acutis 6que in superficie inferiore magnis e quibus 

 5 longitudinaliter biseriatis sextus intermedins. — Long. unc. 3^. 



Scolopendra megacephala, Newp. I. c. p. 99. sp. 35. 



Hab. In Nova HoUandia ad Portum Essington, Gilbert, {v. in Mus. Brit.) 



The distinctive characters of this species are the size of the head and the general shorts 

 ness of the body, as compared with other species. The cephalic segment is very con- 

 vex, large, rounded anteriorly, with the posterior margin straight ; antennae reddish 

 olive, and pubescent at the apex ; basilar segment very large, convex, almost quadrate ; 

 mandibular tooth small, with a deep incision at the inner side of the joint. Labium 

 smooth ; longitudinal suture distinct ; dental plates large, reddish olive, with the pos- 



3 I 3 



