192 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
SCOLOPENDRA EXPLORANS, Sp. nov. 
Dorsum dark olive, the plates being somewhat darker at the caudal 
borders and in a transverse row of areas or spots across the anterior 
half. Head darker excepting along the caudal border where it is 
much lighter, somewhat testaceous. Antennae olivaceous. Legs tes- 
taceous, excepting the posterior pairs, especially the ultimate, which 
are of a somewhat cherry-red color, particularly distad. Venter light 
brown. Prosternum dark brown; the prehensors somewhat rufous 
proximad of the black claws. 
Cephalic plate with two very fine submedian sulci diverging cepha- 
lad across entire length of plate. Very finely and subdensely uni- 
formly punctate. 
Antennae of moderate length. Composed of seventeen articles of 
which the first four are subglabrous and subdensely finely punctate; 
the other articles very densely clothed with fine brownish pubescence. 
Articles from the sixth distad not more than one and a half times 
longer than wide. 
Prosternum and prehensors subdensely punctate with fine punctae. 
With no median sulcus but with a distinct though fine transverse 
sulcus, caudad of which there is a mesal, shallow depression. Each 
dental plate with a large isolated tooth at ectal end and apparently 
three thoroughly fused teeth mesad of this, there being only slight 
indications of any divisions in the fused piece. 
First dorsal plate with a distinct cervical sulcus. Very finely 
punctate, the punctae being rather more scattered than on the head. 
No sulci detected on the second plate. The third to twentieth plates. 
with paired longitudinal sulci extending full length of plate, fine. 
Finely punctate like the first plate, but the punctae becoming fainter 
and fainter caudad. First indications of lateral margination shown 
on the eleventh to fourteenth plate, the margination becoming more 
and more strongly marked caudad. Last dorsal plate without a 
median keel. Not punctate. Convexly arched on anterior portion, 
the posterior being more flattened. Caudal margin rather strongly 
bowed out caudad, the border being depressed in front of the median 
portion of the margin. 
Ventral plates either wholly without sulci or with very short traces 
of these at anterior border. Punctae fine, becoming faint caudad. 
Last ventral plate narrowed caudad. Caudal margin subtruncate, 
being but weakly rounded; mesally slightly notched or incurved. 
Without median longitudinal sulcus. 
