424 Ona remarkable Cysticercus from a Dolphin. 
As regards the long neck of the ecysticercus, it would 
appear to be one of those apparently useless structures so 
frequently met with in the animal kingdom, of which no 
satisfactory explanation is forthcoming. As Moniez remarks: 
“Tout ce développement se fait en pure perte, car il est bien 
impossible que la téte du ‘T'énia puisse se dévaginer.”” In all 
probability all but the portion surrounding the scolex is 
thrown off and lost when the animal finds its way into its 
tinal host. 
The host of the Cysticerecus Teniie Grimaldii, Moniez, 
though its specific name is not given, would appear to have 
been the common dolphin (Delphinus delphis), as was also 
the host of Gervais’s Stenotenta delphint. The worm is now 
recorded for the first time in Layenorhynchus. 
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