chamberlin: west Indian chilopoda and diplopoda. 229 



next running dorsad and then mesad above the blade of the upper 

 branch. 



The general color-pattern is as in A. dentatus but the black of the 

 latter species is replaced with chocolate-brown and the caudal yellow 

 line of the metazonites does not widen or extend forward at the middle. 

 The yellow area is present on the prozonites as in that species. The 

 antennae and legs tinged with red as in that species, but the color 

 obviously deeper on the legs. 



The teeth on the caudal margin of the keels are distinct but obviously 

 less produced than in A. dentatus. The caudal processes of the nine- 

 teenth keels are shorter and much more rounded than in that species. 



The species is also clearly more slender than A. dentatus. 



Length (female paratype), about 37 mm. ; width, 4.5 mm. 



181. Amphelictogon flavipes, sp. nov. 



Type.— 1^1. C. Z. 4,500. Paratypes.— 4:,bQl. Cuba: Guanta- 

 namo, Mt. Toro, subida a la "Hembrita." C. T. Ramsden. 



Differentiated at once from the species p^e^^ously described by its 

 bright yellow legs and antennae which show no trace of red. Dor- 

 sum deep chocolate to black. Keels yellow, the inner edge of the 

 light area running obliquely caudomesad from the anterior edge on 

 each keel, the areas smaller in posterior region. Posterior borders 

 of tergites vaguely and very narrowly lighter, obscurely reddish. 

 Head black above, the black area extending between antennae and 

 expanding in a small subcircular area below. Labrum and lower 

 sides of face pale as usual. 



Principal process on caudal margin of keel low, very broad and 

 obtuse, commonly rounded, often inconspicuous except as a weak 

 angulation of the margin. 



The gonopods of the male are very distinctive. The blade of the 

 upper branch curls strongly ventrad and proximad and then again 

 dorsad and distad, crossing that of the opposite gonopod. The style 

 curls in a similar manner close against the distal end of the ventral 

 branch, its distal portion curving back distad behind the blade of the 

 upper branch. The outer "shoulder" or angular projection of the 

 dorsal branch is much less pronounced than in A. pallidipes and is 

 farther proximad. 



Length (male type), about 29 mm.; width, 4.3 mm. 



