188 



THE MYRIAPODA OF NORTH AMERICA. 



Deep erange, polished ; body anteriorly strongly, but posteriorly slightly narrowed; head small; ecphalic seg- 

 ment suborbicular, impunetate; antennae rather long, filiform, not acuminate, sparsely pilose, articles somewhat 

 obeonic; mandibles thick, sparsely shortly pilose, obscurely tridenticulate ; anterior denticule on each side, large, 

 conical acute; labium broad, short, impunetate, scarcely cuiarginatc, impressed with an obscure median sulcus; 

 scuta without sutures ; feet rather long, slender, with a few short hairs, together with the ventral surface dirty 

 orange, on each side 71; last pair (in female only?) small, slender; sterna impressed with the sterno-cpisternal 

 sutures and a median sulcus. 



S. parviceps, Wood, Journ. A. N. S., new series, vol. v, 1863, p. 49. 



In the only specimen that I have seen the mandibles are perfect, with the exception 

 that they lack the mandibular tooth, probably the residt of an accident ; but it is rather 

 curious that both should be lost and the remainder of mandibles be uninjured. The head 

 appears to be destitute of punctations. Length, 2. 1 , inches. 



Hub. California. — Smithsonian Collection. 



S. EPILEPTIOA. 



8. polita; corpore anticc valde sed postice modice angustato, supra saturate sed subtus dilute aurantiaco; capitc 

 parvo; segmento cephalieo suborbiculare, albomaculato; segmento basali subbasali longioro ; antennis longis, fili- 



formibus, baud aeuminatis, partim pubesccntibus, ar- 



Fig. 21. 



Fig. 22. 



ticulis nonnihil obconieis; mandibulis crassis, distinete 

 tridenticulatis, denticulo antico magno, conioo, aouto; 

 labio convcxo, copiose minute albomaculato, anticc 

 levitcr cmarginato, sulco mediano impresso; scutis 

 longis, latis, sine suturis ; pedibus gracilibus, modice 

 longis, dilute aurantiacis, utrinque 8 1 ; pari postremo 

 (in femina solum ?) parvo, gracile, haud antenni- 

 f'orme; sternis suturis stcrno-epistornalibus ct sulco 

 mediano impressis. (Figs, 21, 22.) 



Polished; body anteriorly strongly, but posteriorly 

 moderately narrowed. Above deep, below dilute 

 orange; cephalic segment suborbicular, sparsely mi- 

 nutely spotted with white ; basal segment longer than 

 the subbasal; antennse long, filiform, not acuminate, 

 partly pubescent; joints somewhat obeonic; mandi- 

 bles thick, distinctly tridenticulate; anterior denticule 

 large, conical, acute; labium convex, copiously mi- 

 nutely spotted with white; anteriorly somewhat cmarginate, impressed with a median sulcus; scuta long, broad, 

 without sutures; feet slender, rather long, light orange, on each side 81; last pair (in female only ?) small, 

 slender, not autenniform ; sterna impressed with sterno-episternal sutures and a median sulcus. 



