CONTRIBUTIONS TO ANIMAL CHROMATOLOGY. 77 
only examined Nemertes neesii; this had a streak down 
its ventral surface of a reddish tint, which showed some shading 
in the blue end of green, but no oxy-hzmoglobin bands. The 
dorsal surface was brownish, but this was found not to be due 
to heematoporphyrin, which as I have shown colours the dorsal 
streak of Lumbricus terrestris. 
In Nereis Dumerillii the blood gave a single band like 
_ that of reduced hemoglobin, not the double band of other 
species, and I could not see the two bands anywhere in this 
worm. In some parts a band like the first of oxy-hemoglobin 
was seen in the blood-vessels, but on making an aqueous solu- 
tion of the blood a faintly yellow solution was obtained showing 
two feeble bands; the first was like that of the first of oxy- 
hemoglobin, but the second was rather narrower than is the 
second blood-band. These bands read approximately: the 
first from X 584°5 to X 574, and the second about A 550°5 to Xr 
536, and a third one at the blue end of green from about A 507 
to \ 474 (?) was visible. Sulphide of ammonium caused these 
bands to disappear, but I could not then detect that of reduced 
hemoglobin. 
Chlorocruorin! exists in Sabella bombyx as well as in 
Sabella ventilabrum and Siphonostoma (Lankester) and 
Serpula. 
The lipochromes and hemoglobin are very uniformly dis- 
tributed among worms. Krukenberg? observes: ‘‘ Chloro- 
phane und Rhodophane tragen auch bei Wiirmern in manchen 
Fallen viel zu einer lebhaften pigmentirung bei.” 
PoLyzoa. 
The colouring matters of Polyzoa have not yet been 
thoroughly examined, and I have had the opportunity of ex- 
amining only two species. 
Lepralia foliacea.—The fine orange-red colour of this 
species is evidently due to a red lipochrome. The colouring 
1 «Journ. Anat. and Physiol.,’? 1868, p. 114; 1870, p. 119; and ‘ Quart. 
Journ. Micr. Sci.,’ October, 1885. 
2 “ Grundzuge,”’ loc. cit., 8. 137. 
