116 
114. 
THÉEL, NORTHERN AND ARCTIC INVERTEBRATES. I. SIPUNCULIDS. 
Plate VIII. 
Figs. 111—119. Aspidosiphon mirabilis THÉEL. Bohuslän. 
The animal with a part of the proboscis retracted. +. 
Dorsal view of the foremost part of the trunk and the hindmost part of the proboscis, 
showing the anus and the pre-anal shield of chitinous plates. +$. The same animal. 
View of the posterior shield of the same animal, showing the arrangements of the 
chitinous plates. +. 
Different views of hooks of a specimen from the »Jutska refvet». 249. 
115—116. Cutaneous glands with supporting chitinous plates from the neighbourhood of the 
> IN 
118. 
119. 
Figs. 
anus. Viewed from above. 130. Bohuslän. 
View of a cutaneous gland with supporting plates from the dorsal surface, about 5 mm. 
in front of the posterior extremity of the body. The same animal as before. 130. 
Sample of skin from the ventral surface, about 5 mm. in front of the posterior extre- 
mity of the same animal as before. 130. 
Cutaneous gland close to the posterior shield. The same animal as before. 130, 
120-—127. Physcosoma Lovenii (KOREN and DANIELSSEN). Type from Bergen. 
Sample of skin of the proboscis with its papille. Seen from above. 23. 
Sample of skin of the posterior part of the proboscis with its papille. Upper view. ?P. 
A papilla from the same place. The gigantic excretory cells are rendered invisible from 
superposing pigment-granules and plates. Seen from above. 130. 
Papille from the anterior and middle part of the trunk. 2. 
One of the same papillge. The gigantic cells are obscure owing to pigment, but are 
visible towards the periphery. 139. 
Papille of the posterior extremity of the body. Seen from above. >. 
One of the same papille, seen from above. The gigantic cells, obscure by reason of a 
layer of pigment arranged round the pore; they are visible towards the periphery. 130. 
A section through a gland from the posterior extremity of the body. 139.” 
c. cutiele. — e. ectodermic epithelium. — 1 m. longitudinal muscles, which are fused posteriorly 
and do not there form any bundles. — tm. bundles of transversal muscles. — p. layer of 
pigment. Exterior to the epithelium, which confines the glandular cavity, the cuticle shows a 
fine concentric structure. 
