Howe: CHINESE MARINE ALGAE 139 
ENDOCLADIA COMPLANATA Harv. C, 969 p.p., forming a matted 
covering on rocks. The thallus is only slightly complanate, 
but it agrees with the plant distributed under this name by 
Okamura in Alg. Jap. Exs. 56. In herb. Cowdry the species 
is mounted with fragments of Symphyccladia gracilis, to 
which it may bear some superficial resemblance in size, color, 
and general habit. 
GYMNOGONGRUS FLABELLIFORMIS Harv. C, 546 and 547, in 
shaded rock pools. A narrow form, the thallus segments only 
about 0.6-0.8 mm. broad (when soaked out) except under 
the dichotomies where they may reach a width of 1.2 mm. 
Suringar, who, like us, had not seen Harvey’s type, makes 
the laciniae 3 mm. broad, and Cowdry plant would seem to 
accord better with Suringar’s G. japonicus (Alg. Jap. 36. pl. 
24 A), which appears to differ from G. flabelliformis only in 
its narrower segments and generally smaller.size. However, 
the Chefoo plant is no narrower than the Japanese plant dis- 
tributed by Okamura as G. flabelliformis in the Algae 
Japonicae Exsiccatae no. 10. Possibly G. japonicus should 
be considered a synonym of G. flabelliformis. 
GRACILARIA CONFERVOIDES (L.) Grev. P, 287 and 2886; C. 538 
Under 287 are elongate sparingly branched tetrasporic 
plants 20-32 cm. long; under 538 are a few smaller more 
branched plants, tetrasporic and cystocarpic. 
GRACILARIA LACINULATA (Vahl) M. A. Howe. P, 290. Two or 
three small fragments. 
CHAMPIA PARVULA (Ag.) Harv. C, 556. Very similar to Euro- 
pean and American forms in habit, but the superficial cells 
of the thallus cortex are somewhat smaller and less clearly 
defined and the cystocarps are often slightly larger and more 
globose. Mrs. Gepp has reported the species from Wei-hai- 
wel. 
cen igh ee sinensis sp. nov. Plants small, 2-3 cm. high, flaccid, 
what gelatinous, intertangled, dichotomous below, the 
main hires irregularly — with an aay 90006 branch 
in another plane, mostly 0.3-0.6 mm. in diameter, the 
branches and reaches Nightly coeairisted at base, other 
constrictions rare, the ultimate branchlets ovoid-fusiform to 
digitiform; thallus wall thin, mostly 30-65 u thick; cells of 
the superficial layer mostly 12-24 y. in maximu m diameter in 
surface view, often broader than bik in cross sections of the 
