PLATE 1 
EXPLANATION OF FIGURES 
Nectonemertes mirabilis 
1 Mature male cleared in cedar oil after staining with borax carmine, showing 
the internal anatomy, with the flattened caudal fin at the posterior end of the 
body, the horizontal fins, and the tentacles. The slender, slightly convoluted 
proboscis is attached posteriorly near the end of the proboscis sheath. Anter- 
iorly the specimen shows the cephalic loop (cv) of the lateral vessels above the 
rhynchodeum, the relation of dorsal ganglia (dq), lateral nerves (Jn), the cephalic 
nerves, and the number and position of the retort-shaped spermaries (sp). Near 
the posterior end of the body is seen the common union of the two lateral blood- 
vessels (lv) and the median vessel (mv), and the posterior anastomosis of the lat- 
eral nerve cords (/n’) above the intestinal diverticula (id). & 6. 
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