IT APPENDAGES OF PHYLLOPODA yy, 
excluding the gnathobase) being very mobile and attached to the 
main stem by a definite joint. On the outer side are two pro- 
cesses ; a proximal “ bract,” a flat plate with crenate edges, partly 
divided by a constriction into two, and a distal process, cylindrical 
and vascular, called by Sars and others the “epipodite.” In 
other Branchipodidae we have essentially the same condition, 
except that the fifth endite often becomes much larger than in 
Artemia, throwing the terminal endite well over to the outer 
A B 
Fic. 8.—A, Thoracic limb of Chirocephalus diaphanus ; B, prehensile thoracic limb 
of male Hstheria. gn, Gnathobase ; 1-6, the more distal endites. 
edge of the limb; such a shift as this, continued farther, might 
well lead to the condition found in the Limnadiidae, or Apodidae, 
where the lobe which seems to represent the terminal endite of 
Artemia is entirely on the outer border of the linb, forming 
what most writers have called the exopodite (Lankester’s 
“flabellum ”).' In the two last-named families the basal exite 
or bract of the Branchipodidae does not appear to be represented. 
~The limbs of the Apodidae are remarkable in two ways: 
those in front of the genital opening (very constantly ten pairs) 
1 The nomenclature here adopted is not that of Lankester. 
