PRIAPULOIDEA, a small group of vermiform marine creatures; they have been usually placed in the neighbourhood of the Gephyrea, but their position is uncertain and it is doubtful if they are to be regarded as coelomate animals.
Sma in amoun a B, Union of the vermiform nuclei cell consists mainly of a with the egg-nucleus and the two nucleus.
In some species (Spengelidae) there is a long capillary vermiform extension of the stomochord in front.
Foot expanded distally into a symmetrical disk with a crenate edge or simple and vermiform without well-developed lateral processes; shell often contracted towards the anterior aperture.
Both nuclei are elongated vermiform structures, and as they enter the embryo sac present a twisted appearance like a spermatozoid without cilia (fig.
Caecum very short and wide, with a vermiform appendage (see Wombat).
In association with this movement in a definite direction the body has become vermiform and bilaterally symmetrical.
Of Neomenia and Chaetoderma, vermiform animals destitute of shell, with the Chitons, and placed them all in a division of worms which he named Amphineura.
The eruciform larva of the Orthorrhapha leads on to the headless vermiform maggot of the Cyclorrhapha, and in the latter sub-order we find metamorphosis carried to its extreme point, the muscid flies being the most highly specialized of all the Hexapoda as regards structure, while their maggots are the most degraded of all insect larvae.
And Mesnil, a very long vermiform parasite, from eels (fig.