288 FAUNA HAWAIIENSIS 



Legs, including coxae, flavo-testaceous. 



Antennae with the first three or four joints (or more) yellow, joints 8 to 

 12 submoniliform, only a little longer than thick. 



Clypeus produced anteriorly into a broad rounded ledge ; mandibles 



rufous with black teeth 1^4) S. oahuensis. 



Clypeus normal, obtusely triangular anteriorly, but not produced into a 



projecting ledge (5) 5. testaceipes. 



5. Mostly flavo-testaceous, the abdomen never black 6. 



Mostly black, the abdomen always black. 



Pronotum alone yellow, rest of thora.x black ; legs yellow ; head very 

 distinctly longer than wide ; flagellum tapering off toward apex, the joints 

 all longer than thick {6) S. flavocollis. 



Prothorax, mesonotum and scutellum yellow (rarely with the scutellum 

 black), the head and rest of the thorax black ; all legs yellow, the anterior 

 and middle legs sometimes yellowish-white ; head not longer than wide 

 across the eyes ; antennae yellow, slightly obfuscated toward apex, the 

 flagellar joints a little longer than thick (7) S. coltaris. 



6. Ocelli, the eyes and tiie metathorax black ; all legs yellowish- white ; head large, 



very slightly longer than wide across the eyes ; antennae yellow, the flagellar 



joints moniliform, the intermediate joints not longer than wide {8) S. kauaiensis. 



7. Species, or at least more or less of the thorax, yellow 10. 



Species, or at least the thorax, always black. 



Legs testaceous or yellowish, at the most with only the anterior coxae and 



femora black or fuscous g. 



Legs, or at least all the coxae and femora, black, or the anterior femur 



and coxae beneath and toward ape.x reddish 8. 



8. Coxae and femora black, the trochanters tibiae and tarsi yellowish ; barely three 



joints of antennae yellowish, the joints beyond to the last moniliform, not or 



scarcely longer than thick (/) S. Uuconeura. 



Anterior coxae and femora beneath and toward apex, the trochanters, tibiae and 

 tarsi testaceous; basal two joints beneath reddish-yellow, the joints beyond 

 all distinctly longer than thick (2) S. monticola. 



9. Clypeus produced into a ledge anteriorly. 



Antennae yellow, with the 4 or 5 terminal joints more or less dusky, all 

 flagellar joints distinctly longer than wide, the first three about twice 



as long as wide {4) S. oahi/e?isis. 



Clypeus normal, not produced into a ledge anteriorly. 



Antennae yellow, faintly dusky toward apex, the flagellar joints 5 to 10 



submoniliform, not longer than thick {S) S. testaceipes. 



10. Abdomen black. 



Prothorax alone yellow {(,) S. flavocollaris. 



Prothorax, mesonotum and scutellum yellow {?) S. collaris. 



Abdomen never black. 



Body, except the metathorax, the ocelli and the eyes, wholly flavo- 

 testaceous (j>) 5. kauaiensis. 



