(I) The polyp, when present, is without the strongly developed longitudinal retractor muscles, forming ridges (taeniolae) projecting into the digestive cavity, seen in the scyphistoma or scyphopolyp. (2) The medusa, when' present, has a velum and is hence said to be craspedote; the nervous system forms two continuous rings running above and below the velum; the margin of the umbrella is not lobed (except in Narcomedusae) but entire; there are characteristic differences in the sense-organs (see below, and Scyphomedusae); and gastral filaments (phacellae), subgenital pits, &c., are absent.   anvd [Please select]

The great _patio_ was covered with a sort of light-blue velum, and behind it were myriads of star-like lights.   anvd [Please select]

_ There are about 40 tentacles, the velum at the base of which extends upwards for a considerable distance without being festooned.   anvd [Please select]

Both the velum and the tentacular sheath bear numerous minute tubercles on the external surface.   anvd [Please select]

_ The polypide has normally about 60 tentacles, the velum at the base of which is narrow and by no means strongly festooned.   anvd [Please select]

There are about 90 tentacles, which are long and slender, the velum at their base being narrow and almost straight.   anvd [Please select]

_ The lophophore bears about 20-25 tentacles, which are very slender and of moderate length; the velum at their base is narrow; as a rule the lophophore is accurately circular.   anvd [Please select]