88 



HENRY MCELDERRY KNOWER 



ILLUSTRATIONS 



The illustrations for this paper are reproductions of drawings by Miss Lisbeth 

 Krause of the Osborn Zoological Laboratory of Yale University, except where 

 indicated, as follows (see also statement under Appendix, p. 83) : 



Figures 6, 7, 13, 23, 24 and 24a were drawn by Miss M. E. Brinton, contributed 

 by the Elizabeth Thompson Science Fund. (See Appendix, p. 83.) There are 

 five text figures: figure A by Mr. Geske; figure C by Miss Krause; figures B, 

 D and E are reproductions of figures in Hoyer 's papers as indicated in the text. 



All drawings are from injections of B. palustris unless otherwise stated. 

 ABBREVIATIONS USED IN ALL FIGURES 



A.C., anterior cardinal vein 

 Ant.Ab.V., anterior abdominal vein 

 Ant.Ac.Dsl.L., anterior accessory dorsal 



lymphatic system 



Ant.Bw.L.Prn., anterior body wall lym- 

 phatics and pronephros 

 Ant.Bw.Plx., anterior body wall plexus 

 Ant.Bw.Prn.L., anterior body wall pro- 



nephric lymph plexus. 

 Ant.Cn., anterior connective 

 Ant.Col.D., anterior collecting duct 

 Ant.Col.L., anterior collecting lymphatic 

 Ant.Confl., anterior confluence of affer- 

 ent lymphatics 



Ant.Ht., anterior lymph heart 

 Ant.L.H., anterior lymph heart 

 Ant.L.Ht., anterior lymph heart 

 Ant.Vt.V., anterior vertebral vein 

 Ao., aorta 



Cb.Plx., cerebral plexus 

 C.Dsl.L., caudal dorsal lymphatic 

 Cent.Sx.S., central submaxillary lymph 



sinus 

 Cn.D., central lymph duct of central 



sinus 



Cn.S., central lymph sinus 

 Co.L., circum-oral lymphatic 

 Cut.A., cutaneous artery 

 Cut.V., cutaneous vein 

 Cut.V.V., cutaneous veins 



D.Cv., duct of Cuvier 



Dp.Phgl.L., deep pharyngeal lymphatic 



Drsl.Ao., dorsal aorta 



Dsl.A., dorsal artery 



Dsl.A.A., dorsal arteries 



Dsl.C.L., dorsal caudal lymphatic 

 Dsl.Cn., dorsal connective 

 Dsl.L., dorsal lymphatic 

 Dsl.L.Plx., dorsal lymph plexus 

 Dsl.Plx., dorsal plexus 

 Dsl.R.D., dorsal reception duct 

 Dsl.Seg.A.A., dorsal segmental arteries 



Ex.Ct., external carotid artery 

 Ex.Jugl., external jugular vein 



F.Ct.V., facial connecting vein 

 F.V., facial vein 

 F.V.V., fin veins 



Hd.G.Bnd., hind-gut bend 

 Hd.G.B., hind-gut bend 



Inj.Prn., injected pronephros 



Int. Fix., intestinal flexure for first coil 



of intestinal spiral 

 Int.Jgl., internal jugular vein 

 Int.Vscl.L., internal visceral lymphatics 



Jgl.L., jugular lymphatic 

 Jnx.L.-V.L., junction of lateral and 

 ventral lymphatics 



L., left 



Lat.B.L., lateral body lymphatic 

 Lat.C.L., lateral caudal lymphatic 

 Lat.C.L. & Post.L.Hts., lateral caudal 

 lymphatic and posterior lymph hearts 

 Lat.C.V., lateral caudal vein 

 Lat.L., lateral lymphatics 

 Lat.L.Plx., lateral lymph plexus 

 Lat.V., lateral vein 



