468 
THOS. H. MONTGOMERY jr., 
Explanation of Plates. 
Plates 37—43, 
All the figures have been drawn with the aid of the camera lucida. 
The following abbreviations have been employed in the lettering of the 
Figures: 
A. Cut areolar layer of outer cuti- 
cula 
Ar areole of outer cuticula 
Air atrium 
B.M basement membrane 
Cd.N caudal nerve 
Ceph. G cephalic ganglion 
Ceph. N cephalic nerve 
Chb. C chromophobic nerve cell 
Chb. N chromophobic nerve fibre 
Chl. C chromophilic nerve cell 
Chl. F chromophilic nerve fibre 
Chl.N nucleus of chromophilic 
nerve cell 
Cil ciliary tuft 
Cl. Ap cloacal aperture 
Cl. Cav cloacal cavity 
Cl. Cut cloacal cuticula 
Cl. Epi cloacal epithelium 
Cl. G, cloacal ganglion 
Cl. N cloacal nerve 
Cu.Cl cuticular region of cloaca 
Cut cuticula of body wall 
Dors. N dorsal nerve of cephalic 
ganglion 
Dors. N.B branch of dorsal nerve 
of cephalic ganglion 
D.T dorsal nerve fibre tract of 
nerve cord 
D.T.L dorsal tail lobe 
E. Cap eye capsule 
E. Cap. C cell of eye capsule 
E. Cav fluid cavity of eye 
E. Coag coagulated fluid of eye 
cavity 
E.Hyp anterior hypodermal wall 
of eye 
E. Hyp.C hypodermal cell of eye 
E. Hyp. C.2 rounded cell of hypo- 
dermis of eye 
F. Cut fibrous (inner) layer of cuti- 
cula 
Gen. N genital nerve of male 
G. Epi germinal epithelium 
Gl. C gland cell 
Gl. Cl glandular region of cloaca 
Gl. Secr glandular secretion 
H. Cut homogeneous layer of outer 
cuticula of body wall 
Hyp hypodermis 
Hyp. N nucleus of cuticular cell 
of hypodermis 
I. M.S intermuscular tissue 
Int intestine 
Int.S sheath of intestine 
L. Cav lateral body cavity 
L. H. N longitudinal nerve of hypo- 
dermis 
L. Par large-celled parenchym 
L.T.L lateral tail lobe 
L.V.T latero-ventral fibre tract of 
nerve cord 
