A A LL TS 
Vou. 2] Torrey.-Hydroids of the San Diego Region. 33 
Clark, the figures of which the without the slightest shadow of 
doubt typical of Trask’s species. There is as little question that 
my 8. filicula E. & S. (:04, p. 68, pl. 9, fig. 80) belongs with 
Trasks’s and Clark’s S. anguina; so I fail to see why Nutting 
placed it instead, though dubiously, with his Abietinaria filicula 
(Ellis and Solander). 
After expressing his inability to agree with me 
¢ 
‘in consid- 
ering this species identical with A. filicula,’’ Nutting at once 
adds in a footnote: ‘‘It is possible that the name anguina should 
be retained for the var. robusta of Clark, which 1s apparently 
distinct.’’ I take these statements to mean that if S. anguina 
and WN. filicula prove to be identical, the var. robusta should 
remain under Trask’s old name. Why Nutting is unable to see 
the identity of the two species he does not say and I am at a loss 
to discover. My reasons for uniting them lie in the faet that 
Trask’s figure of S. anguina, though erude and containing an 
error in showing 4 rather than 3 hydrothecae on the stem 
between the bases of successive branches, Murray ’s figure of NS. 
labrata, Clark’s figures of 8S. angwina, Hineks’ figures of S. fili- 
cula and my own observations of both trophosome and gonosome 
refer unmistakably to the same species; and they agree with 
Nutting’s figure (Pl. 34, fig. 1) of Abietinaria filicula (Ellis and 
Solander) and not, curiously enough, with his figures of Abveti- 
naria anguina (Trask) on the same plate, figs. 5-7. They agree 
also with the var. robusta of Clark in all details save stoutness 
of the stem, a difference which is probably referable to differ- 
ences of environment, not heredity. 
Fam. PLUMULARIIDAE. 
Gen. Aglaophenia, Lamouroux, 1812. 
35. Aglaophenia diegensis. 
Aglaophenia diegensis, Torrey, 1902, p. 71, pl. 9, figs. 84-86. 
Trophosome. Stem 150 mm. long, with short internodes. Hydro- 
cladia alternating, one to an internode; divided into equal internodes by 
faint nodes which may be wanting. Hydrothecae each longer than diame- 
ter of aperture; 9 irregular marginal teeth, median tooth sharp and 
recurved, adjacent teeth longest, smallest teeth next the hydrocladium. 
Mesial nematophore reaches level of hydrothecal aperture. Septal ridge 
