Introduction to A niinal Morphology. 2 1 9 



with albumen, and in a common capsule ; eyes none ; blood 



red ; mouth unarmed. Lumbricus, the common earthworm, 



has two-rowed hooked bristles, three salivary, several oeso- 



phagcal glands on the thirteenth ring, and a muscular 



mach behind the provcntriclc or crop in the fifteenth ring ; 



it has two pair of testes and live pair of capsuligenous glands. 



Pontoscolex lives in the sand of the Red Sea. Phreoryctes 



lives in wells. IIypo^:vn reaches an enormous size, as does 



iscolex. 



2. Gymnocopa {Grube) body long, flat, not sharply seg- 

 mented, in front broad ; parapodia only developed in front, 

 two lobed, without bristles, but the two or four short frontal 

 feelers and the two long tentacle's arc bristled; eyes two; 

 mouth with no epipharynx nor teeth ; segmental organs with 

 a rosette-like opening ; dioecious ; marine. This includes one 

 family and two genera, Tomopteris and Eschscholtzia.* 



3. Notobranchiata (Schmarda] gills various or rudimental, 

 appended to the notopodia, vascular ; eyes and cirri various ; 

 parapodia usually present. Family i. Polyophthalmidaef 



.11, marine, free, with few segments, no parapodia; head 



three-lobed, with no cirri ; a protrusible unarmed epipharynx ; 



9 before described ; they are passage forms between 



Naidida? and Serpulidce. 2. Halelminthidse parapodia, ap- 



5 and ryes absent; body in a membranous tube, ex. 



tella. 3. Maldanidae long, round, unequally segmented, 



living in tubes in sand ; prostomium flattened, with entire 



(Clymene) or split margin ; no eyes, gills, nor feelers ; para- 



:!>bed ; rpipharvnx club-shaped, often papili- 



4. Choetopteridae zonites heteronoinous ; 



I into three re-ions, living in h-athrn or stony 



: -mcnts with three feelers : eyes i 



(C'h , or nonr (Spiochaetoptems) ; larva niesotroclial. 



5. f ' ; with no jtarajiodia, lint with ajipcnda^ s and 



. with caudal, branchial appi-nd. Aplir<- 



(litidit uiii-ijual, with (i . : cld-likr rhtrar : 



T 



mailc th'- 

 us. 



