128 Prof. M‘Intosh’s Notes from the 
Fig. 8. Porella princeps, Norman. 
Fig. 9. The same, to show the number of blind zocecia (“ kenozocecia,” 
Levinsen) and irregularly shaped zocecia around the ancestrula. 
Fig. 10. The same, operculum. 
Fig. 11. The same, in which the thick outer calcareous wall has been 
removed by acid, and a previously entirely concealed ocecium 
and the oral avicularium have been exposed to view. 
Fig. 12. Monoporella spinulifera, Hincks. A zocecium which has, like 
the last, been partially decalcified, and an ocecium has been 
brought to view. 
Fig. 18. Schizoporella cruenta, Norman. A zocecium which has been 
similarly treated, as the two previous species, with nitric acid, 
and an ocecium of which the existence was previously unknown 
has been brought to light. 
Fig. 14. Smittia lineata, Nordgaard. 
Fig. 15. The same. Operculum and outline of margin more magnified. 
Fig. 16. Schizoporella auriculata, Hassall. Operculum, for comparison 
with the preceding. 
VI.—Notes from the Gatty Marine Laboratory, St. Andrews. 
No. XXV. By Prof. M‘Inrosu, M.D., LL.D., F.BRS., &c. 
[Plates X.-XIII.j 
1. On the Eunicide dredged by H.M.S. ‘Porcupine’ in 1869 and 
1870. 
2. On Canadian Eunicide dredged by Dr. Whiteaves, of the Canadian 
Geological Survey, in 1871-1873. 
3. On Norwegian Eunicide collected by Canon Norman, D.C.L., 
Ieee 
1. On the Eunicide dredged by H.M.S. ‘ Porcupine’ 
in 1869 and 1870. 
A species of Diopatra was procured in the Expedition of 
1870, at Station 50, off the Algerine coast, near Cape Tenez, 
in 7-51 fathoms, which most closely approaches Diopatra 
neapolitana, Delle Chiaje. 
It consisted only of a fragment of a small example, about 
half an inch long, and comprising the head and about thirty 
of the anterior segments. The head is characterized by the 
great size of the tentacles, their enlarged ringed cerato- 
phores, and the presence of two short, spindle-shaped, frontal 
tentacles. The palpi have a tuberculated anterior border. 
The eyes have disappeared, whereas in the Neapolitan ex- 
amples they are present. The body is rounded in front, 
the first segment—which is no wider than the sueceeding— 
being devoid of feet. From its anterior border project the 
