In association with this movement in a definite direction the body has become vermiform and bilaterally symmetrical.
Reduction in size is due to A, Two vermiform nuclei in the emthe absence of cytoplasm, bryo sac; one approaching the eggwhich is in some cases so nucleus, the other uniting with the 11 ~ ~h ~h upper polar nucleus.
25) - a vermiform podeiform Larva of larva, with soft, white, feebly-chitinized a Ground-Beetle cuticle and without either head-capsule (A epus marinus).
But in general we find that elaboration of imaginal structure is associated with degradation in the nature of the larva, cruciform and vermiform larvae being characteristic of the highest orders of the Hexapoda, so that unlikeness between parent and offspring has increased with the evolution of the class.
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.
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.
In some species (Spengelidae) there is a long capillary vermiform extension of the stomochord in front.
V.0, Vermiform organ.
The vermiform body is covered with cycloid imbricating scales, devoid of osteoderms. Limbs and even their arches are absent, excepting a pair of flaps which represent the hind-limbs in the males.
Ungulinidae.-Foot greatly elongated, vermiform, ending in a glandular enlargement.
- Shell globular, covering only a small portion of the vermiform body; heart on ventral side of rectum; a single aorta; siphons long, united and furnished with two posterior calcareous " pallets."
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.
Vermiform, with thick girdle and small valves; insertion and sutural plates strongly drawn forward, sharp and smooth.
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.
The body is elongated and vermiform; it bears a number of paired appendages, each terminating in a pair of claws, and all very much alike.
- Vermiform Larva (maggot) of House-fly (Musca domestica).
Cyclorrhapha: Larva vermiform (no head-capsule).
Larvae eruciform without thoracic legs, or vermiform without head-capsule.