A description of two new species of the genus Erenna (Siphonophora: Physonectae: Erennidae), with notes on recently collected specimens of other Erenna species
Pugh, P. R.
Haddock, S. H. D.
Zootaxa
2016
4189
3
401
446
7NYZS
Bedot, 1904
Bedot
1904
[238,483,1158,1184]
Hydrozoa
Erennidae
Erenna
Animalia
Siphonophorae
1
402
Cnidaria
genus
Diagnosis.Nectophores flattened in the upper/lower direction, with tapering axial wings; distinct upper and lower lateral ridges respectively form upper and lower margins of lateral surface, with short, perpendicular, vertical lateral ridge connecting them. Lateral radial canals straight, with or without additional small protuberances, spikes, or 'horn' canals. Bracts of two types, with bracteal canal ending distally below a cupulate process containing ectodermal cells, including nematocysts. Tentillum large, with hypertrophied, uncoiled cnidoband and, when present, rigid terminal process devoid of nematocysts. Gastrozooid with large swollen basigaster, but no obvious peduncle.