ia. sie fakes i Tig rae pbs nese ire east i a aunts i Braet ee RT ies So sti Mea Beale, reais Beet peat Bae) ashes) re ey ki ‘i ay 1 See Otdee eka z, bea Sa te - ee ST iiestaae f oa F i aN ; Se) ia GDL pel Wer ayare : nf era) Bs | a ae Sida heey Aa a RC 4 ra 3S = SS Ineecta aay “Arachnida $ Myriapoda A _ Eurypterida \ ‘ ei LO ga a 77 & = Lae We. Cyclostomata a oe bore annelida Onychophora Elasmobranchii v7 ~ / “ rie ‘ ’ st SU oye ly Ww <= 1 B Leptocardit \ Tardigrada Samer _ATunicata aN ON eS M7 beset Moy . i We V / SH | v t Pentastomida XY & H O™e, \ NA CE XK = Z) i Gastropoda Enteropneusta € \. CHORDATA ‘ / Oe \ / — Scaphopoda SS H yy 0 earxe ) L —— Phoronida VA ’ ye Polyzoa. Adin BS ee aw ws SS , \ 3 5 é. MOLLUSCOIDA sai / ain - + Echinoidea oe \. N Rotifera 1 Ce yi wi. Sle / = NO aah 3 0 XS s Asteroidea Hélothuroidea as i we / . y; = Xt TROCHELN sa car ELI MINTHES Fi aby “7 Acanthocephala Ophiyroides a \ / BAG be 1 4 - p 1 ! s a Fae } Meh ee Nematoda \ / 7 “4 Wise erre Yh F ee ‘ Dinophilea 7 it ss NEMATHELMINTHES ‘ ‘ 4 7 7 \ Ua 7a 7 iG angie \ / 7 ‘a Crinoidea \ eas Bre axial 5 eae Sy ph Wd x50 7 Chartognatha (CHINODERMATA Nil 4 7 Rea ECE DE A Wien Desmoscolecidas Lao Se = Wie ‘ Aten S YW fi setinp Sn « V L Coke XM ‘ x2s Tose ite pow ' ete Se ' Cheetosomide oo ~ va te Ta 1 U ae yea: ~ 4 - te ' ee, 1 a SS ! SA ‘ 1 7 Sy 4 RES \ 1 5 : N 1 ¢ : xe 1 ti Trematoda ‘\ if ca S 1 7 Turbellaria Cestada. 1 1 1 x t fogs oa 2 i “ pe See y, ae 1 pe J A 4 les ‘Actinoza. " S45 #5 Ege ni ! BG ea y Non-calcarea H bees Uaeeed Calcarea ! a 7 7 Pit Sean Ze ANG CELENTERATA \ \ Pe 7 Nas Nata a pire ence ed ele eas SNe xe SSR tA oe SA wa 235s" a SNe e8 Sa reteset X15 P vs . mEsoLoA ied N é The Phyla and Classes of Animals Ar- ranged to show their Supposed Relation- ships. Copyright, 1909, by W. P. Hay. isle Nore:—Classes which are entirely extinct are represented by name only; those which consist of minute or microscopic forms have the repre- The approximate degree of enlargement or reduction is indicated PROTOZOA ' ' ‘ by the small figures near each picture. sentative enclosed in a circle. Z