•_".m; 



THE VOYAGE OF H.M.S. CHALLENGER. 



g.d. 



<jl.it. 



."■•-'■ 

 g.v. 

 h. 



h.i. 

 li.m. 



/'. 



i.e. 



i.l. 



i. v. 

 I. 

 I', 

 l.b.h. 



l.v. 



the genital ducts. 



tho subneural gland. 



the germinal spot in the ovum. 



the germinal vesicle in the ovum. 



the heart. 



the hepatic tubules. 



the horizontal membranes in the 



branchial sac. 

 the intestine, 

 the intestinal coecum. 

 the internal longitudinal bars in the 



branchial sac. 

 blood-vessel to the intestine, 

 the languets. 

 smaller languets. 

 the lateral brown bands in the endo- 



style. 

 the fine longitudinal (or inter- 



stigmatic) vessels in the branchial 



sac. 



sg. 



srjx. 



sp. 

 St. 



ts.v. 



t. 



t.a. 

 t.e. 

 t.e. 



t.1k 



t.k'. 



t.h.i: 



t.m. 



t.rn.c 



in. 



in., in". 



tn.m. 



t.p. 



ti: 



tr'., tr 



trab. 

 tr.x. 



t.i. 

 H.t'. 



t.v. 



V. 



v.d. 

 n\ e. 



w.l. 



the radiating vessels (angular) in 



the branchial sac. 

 the radiating vessels (interangularj 



in the branchial sac. 

 suspensor or connective between 



branchial sac and mantle, 

 the stigmata in the branchial sac. 

 the stigmatic or ciliated cells in the 



branchial sac. 

 the spicules, 

 the stomach. 



the spiral vessels in the branchial sac. 

 the test. 



the translucent area in the endostyle. 

 the small cells in the test, 

 the terminal enlargement of a blood- 

 vessel in the test, 

 the terminal knob on vessels in the 



test, 

 a modification of t.k. 

 cornified papilla on the test, 

 the matrix of the test. 

 a part of the test cornified. 

 a tentacle, 

 smaller tentacles, 

 the membrane on the branchial side 



of the tentacle, 

 a papilla on the outer surface of the 



test, 

 the transverse vessels in the bran- 

 chial sac. 

 smaller transverse vessels in the 



branchial sac. 

 the brown trabecular in the peduncle, 

 extra wide transverse vessel in the 



branchial sac. 

 a thickening of the test. 

 the same for the support of the 



viscera. 

 a testicular vesicle. 

 a blood-vessel in the test, 

 the vas deferens, 

 the white (or clear) edge of the 



endostyle. 

 the wide longitudinal vessel in the 



branchial sac. 

 the praebranehial zone. 



