Key

(from Allan Hancock Pacific expeditions vol. 1 1943)

Genus Emplectonema Stimpson

Key to Species

1. Dorsal surface green; central and accessory stylets curved; stylets long and slender; basis very long; body dark or pale green dorsally; whitish, yellowish, or very pale green ventrally....gracile
1. Dorsal surface brown or purplish; central and accessory stylets straight ....2

2. Stylets short, with swollen heads ; basis of central stylet swollen and rounded posteriorly; 11 proboscidial nerves; dark brown above, often with minute purple dots; flesh colored or yellowish white beneath....burgeri
2. Stylets without swollen heads, fluted longitudinally; basis of central stylet not swollen posteriorly; 16 proboscidial nerves; purplish or purplish brown from closely placed mottlings on dorsal surface ; ventral surface gray or yellowish....purpuratum