120 Proceedings of Royal Soeiety of Edinlnrgh. [sess. 
Class. 
Respiratory 
Pigment. 
Pigment in the 
Sipunculus, . 
Hirudo, 
Hcemophsis, . 
Lumhricus, . 
Sahella, 
Serpula, 
Arenicola, . 
Aphrodite, . 
Glycera, 
Terehella, 
ISJereis, 
Gephyrea. 
Hirudinea. 
Oligochseta. 
Polycheeta. 
? 5 
5? 
5? 
J J 
5 3 
Hasmerythrin. 
Haemoglobin. 
Chlorocruorin.* 
3 3 
Haemoglobin. 
J 3 
3 3 
Corpuscles. 
Plasma. 
53 
3 3 
3 3 
3 3 
3 3 
3 3 
Corpuscles. 
Plasma. 
3 3 
The percentages of saline matter contained in the blood of these 
Annelids are given in the following table : — 
I. 
II. 
III. 
IV. 
Average. 
Sipunculus, 
3-22 
3-20 
3-25 
3*27 
3-27 
Hirudo, .... 
3-23 
3-40 
3-32 
3-34 
3-32 
Hcemophsis, 
3-64 
3-59 
3-62 
3-61 
3-61 
Lumhricus, . . 
3-89 
3-91 
3-83 
3-82 
3-86 
Sahella, .... 
3-51 
3-56 
3-61 
3-55 
3-55 
Serpula, .... 
3-26 
3-19 
3-24 
3-24 
3-23 
Arenicola, 
3-92 
3*91 
3-87 
3-84 
3-88 
Aphrodite, 
3-77 
3*72 
3*71 
3-80 
3-75 
Glycera, .... 
3-65 
3-59 
3-62 
3-60 
3-61 
Terehella, 
3-44 
3-41 
3-45 
3-39 
3-42 
Nereis, 
1 
3-81 
3-83 
3'79 
3-82 
3-81 
Sipuncu- 
lus. 
Hirudo. 
Hcemoph- 
sis. 
Lumhri- 
cus. 
Sahella. 
Serpula. 
Iron oxide (PcgOg) 
Lime (CaO), 
Magnesia (MgO), 
Potash (K 20 )} • 
Soda (Na. 20 ), 
Phosphoric acid \ 
(P. 0 ,), . / 
Sulphuric acid \ 
(SO 3 ), . / 
Chlorine, 
0- 13 
3- 00 
1- 65 
5-02 
44-31 
4- 78 
2 - 86 
38-25 
0- 25 
3- 33 
1- 52 
4- 99 
43-98 
4-89 
2- 92 
38-12 
0-22 
3- 31 
1-60 
5-10 
44-11 
4- 80 
2-82 
38-04 
0-26 
3- 21 
1- 54 
5-00 
44-10 
4- 76 
2- 85 
38-28 
0-18 
3- 42 
1-22 
4- 03 
45-23 
4-56 
2-10 
39-26 
0- 17 
3- 40 
1- 26 
4- 10 
45-26 
4-55 
2-14 
39-12 
100-00 
100-00 
100-00 
100-00 
100-00 
100-00 
See Dr Griffiths in Comptes Renclus, t. cxiv. (May 30, 1892). 
