60 Prof. Allman on the Hydroida. 
beautiful Harbour of Glengariff, this very distinct hydroid was 
obtained. 
Tubularia humilis, Allman, n. sp. 
Trophosome.—Hydrocaulus attaining the height of about one 
inch, simple or sparingly branched, the main stems springing 
at distinct intervals from the creeping ramified stolon; periderm 
with nearly obsolete transverse corrugations : polypites supported 
on collar-like expansions of the ccenosarc, they measure in full- 
sized specimens about two lines from tip to tip of the extended 
proximal tentacles, and have about twenty proximal and fifteen 
distal tentacles ; body of polypites scarlet, periderm light yellow. 
Gonosome.—Gonophores (male*) borne on very short branch- 
ing peduncles, forming erect clusters of scarlet sporosacs, usually 
about three in each cluster; summit of gonophore with three 
rather large tentaculiform tubercles. 
I obtained 7. humilis during the autumn, attached to the 
rocks close to the level of low-water spring tides near the mouth 
of Kinsale Harbour. It resembles 7. ellis in its mode of growth 
and in the shortness of its hydrocaulus; but is at once distin- 
guished from this species by the absence of distinct annulation, 
and by the smaller size and less-appressed form of the polypite. 
Tubularia attenuata, Allman, n. sp. 
Trophosome.—Hydrocaulus attaining the height of three or 
four inches, slender, obscurely corrugated, very irregularly 
branched, with the branches given off at a wide angle: polypite 
supported on a collar-like expansion of the ccenosarc; distal 
tentacles about one-third as long as the proximal ones ; body of 
polypite deep vermilion between the two tentacular verticils, and 
thence becoming paler coloured towards the enlarged base, peri- 
derm light straw-colour. 
Gonosome.—Gonophores (male+) borne on short erect 
branched peduncles, with usually five to eight in a cluster ; ten- 
taculiform appendages of gonophores long, in mature individuals 
nearly equalling in length half the height of the gonophore. 
T. attenuata is 2 deep-water species; I have dredged it from 
about 15 fathoms in the Firth of Forth, and from about 50 
in the Shetland seas. It differs from 7. coronata chiefly in its 
more diffuse habit and the short erect peduncles of its clusters 
of gonophores, while from the 7. simplex, Alder, it is easily 
distinguished by its branched hydrocaulus and by the greater 
length of its distal tentacles. 
* All the specimens examined were males. 
+ Only male specimens have been examined, 
