100 THE AMERICAN MONTHLY [May 
ppp p 
31. PLEUROTROCHA. II., 19. 
Toes moderately long, acute, straight. wee constrictor 
Toes slender, acute, slightly decurved.) ee ce cece leptura 
Toes tapering,long as body,bases separated. Parasitic.parasitica* 
Toes broad, Hearty Strate ye ee ae gibba 
32. NoTOMMATA. II., 20. Sup. 22. 
Brain more or less opaque, (a) 
Brain clear, (d) 
Body subcylindrical, (b) P 
Body saccate, long or slender, (c) 
Body vermiform, soft; alimentary canal apparently 
annulate; toes long, decurved limax. Sup 
Body rhomboid in outline; auricles large, globose: brain 
SR? RNR M RRA EP ante minieuy reli! pilarius 
Auricles invisible; brain intensely opaque; toes long, 
ON Oe i ak ee .crytopus 
Auricles small rounded; dorsum rounded; tail with basal 
knob; toes broad, conical... lie eee tripus 
Auricles small; corona long, oblique; neck large, swollen ; 
toes minute; brain 3-lobed.__..... 1s salpiaitidss seiebeaieea 1 hal ates collaris 
Auricles large; corona prone, long; body orange-brown; 
COCR SHOLT, COTMLCRE ee een na ice truncatat 
Auricles large; body ventricose ; head wide; tail minute... aurita 
Auricles large, stalked; body with transverse constric- 
tions; brain long ow). NOS, i ..torulosa 
Auricles large, dtathen ; corona dialer: with crenate 
fringe; each side of the body with rounded projec- 
CLOUT "COG QC ee ee aes ee aE monopus} 
Auricles large, enclosed by rounded membrane; corona 
prone; front with decurved process... ooo. ollie voraxt 
Body large, tapering to small foot ; toes minute; auricles 
itt | GRUMMAN MEME OPM RODE HAP EA 0 eT Ngan 8 (RANE PF Fv Date forcipata 
Body slender, both ends pointed ; face prone, very long, 
chin prominent cS ae ... 8accigera 
Body cylindrical, or cuneate, (e) 
Body fusiform, (g) 
Body flat, Oniscus-like; teeth many; toes rather 
UF Tg aaa aan eA MMA ESUN RAE: SINGH wnat STR TENG 8 onisciformis. Sup 
Body globose, very small; back arched; toes 2, 
CECUL VOU) ACHE vi ao ovulum., Sup 
Body obconical, hyaline; corona  trans- 
verse and prone; foot long, taper- 
ing to 2 short, acute toes.........., tuba. (Cyrtonia. Q., 1894, 433) 
* Jennings. Bul. U. S. Fish Com., 1899, 84, 
+ Jennings. Bul. Mich. Fish Com., 1894, 14. 
¢ Stokes. Ann. & Mag. Nat. Hist., 1897, 628. 
