744 THE AMERICAN NATURALIST. [VoL. XXXV. 
dj. Three eyes 
er. Eyes in a transverse row near the posterior end of the 
brain . . . 122, Z?ZopAhthalmus dorsualis Ehr. (Fig. 88) 
e2. One large eye on the brain (‘ cervical Fee two smaller ones 
on the front Eosphora 
fr. Body — broie tehid? convex doii; ; head 
separated from the body by a neck, and bearing two 
prominent auricles ; foot slender ; toes short, acute 
123, E. aurita Ehr. (Fig. 89) 
d4. Eyes two 
ez. Eyes frontal; body usually swelling behind and tapering 
toward the head; toes cesa large; jaws prominent, 
forcipate . Diglena 
SH A PETE fei Vibe or hook-like proboscis hanging 
onto the face from the dorsal margin of the anterior end 
gi. Body massive, subcylindrical, dorsum convex, swollen 
ehind; corona a ventral ciliated area; foot a single 
large joint ; toes parallel-sided, abruptly pointed 
4, D. grandis Gosse (Fig. 90) 
£2. Body cylindrical, stout, obtuse at each end, not 
swollen behind ; corona a long ventral area ; toes long, 
curved, somewhat enlarged at base 
125, D. forcipata Ehr. (Fig. 91) 
Eyes colorless ; body slender at each end, swollen in 
the middle; proboscis acute ; toes long, slender, curved 
strongly inward and downward . . 126, D. cércinator 
Gosse (Fig. 92) 
J?. No proboscis 
gt. Body cylindric, long, slender ; front broadly truncate 
(obliquely) ; foot short, ves toes long, straight, slender 
27, D. caudata Ehr. (Fig. 93) 
g2. Body short, cylindric, dicia truncate at each end ; 
toes short, straight, acute, projected from the ventral 
side, nearly at right angles to the body ax 
128, D. catellina ‘Ebr. (Fig. 94) 
£j. Body oblong, swollen posteriorly ; head larger than 
neck ; toes long, slender, straight, perfectly even in 
thickness pointed ; eyes very close together; jaws Pro 
trusile ; alimentary canal large, always filled with green 
matter . . . . . 129, D. biraphis Gosse de ig. 95) 
e2. The two eyes cervical in position  . . Distemma 
Jr. am a slender cone ; toes stout, Vai toothed at 
o, D. forficula Ehr. 
B2. Cuticula stiffened, to forts a an armor or lentes Sober LORICATA 
41. Foot absent 
