S8 W. M. Bale .- 



The form from Bondi, figured by me in tlie Proceedings of the 

 Linnean Society of New South Wales for 1S88 (pi. 13, figs. 9-11), 

 corresponds pretty closely with Von Lendenfeld's specimens in size 

 and habit, but differs in the very regularly convex outline <<i the 

 hydrothecae, recalling, in the shorter ones, Allman's //. hemi- 

 spherica. The base of the gonotheca is mostly broadly rounded, l)ut 

 sometimes narrows more gradually into the peduncle. This form 

 may be provisionally distinguished as var. roiunda, but I think 

 it quite probable that the characteristic outline of the hydrothecae 

 may be an inconstant feature; if so, the specimens cannot be dis- 

 sociated from the type. 



The other Bondi form (Proc. Lin. Soc. N.S.W., 1888, pi. 13, figs. 

 12-15), is of more lobust habit, with larger hydrothecae, and stouter 

 peduncles. The hydrorhiza is about as wide as that of the type, 

 but with the internal channel wider. Its lateral branches, uK^st of 

 which are exactly at right angles, are excessively numerous. The 

 hydrothecae may attain the length of about .(JO nun., and their 

 lateral contours, as .seen in the broader aspect, are somewhat con- 

 cave, so that the lips appear slightly everted. The internal sinua- 

 tion, in which the foot of the hydranth rests, is not very deep. The 

 outside is characteristically marked, with irregular raised veins, 

 giving it a woody appearance. It may be distinguished as var. 

 veno>^a. 



Eucopella reticulata Hartlaub differs from my specimens mainly 

 in the gonangia, which are attenuated more aradually into the 

 peduncles, and in the size of the hydrothecae, which reach ovei- .75 

 mm. in lengtli, while those of .S'. aiinpauular'Ki i-arely reach .50 

 mm., and the average is about .40. Hartlaub's discription of the 

 hydrorhiza as wide-meshcd scarcely applies to tliat of the present 

 species. 



The forms liei'e described, wliile agi'eeing closely with sonit' othei" 

 species in regard to rlie ti'o])hosonie, may readilv lir distinguished 

 l)y tlie gonothecae. Wlu'tlu'r the thicc Austvalian forms art- jn'o- 

 perly i-eferred to a single species is perhaps ((ncstionable, and lui-- 

 ther investigation must decide;- Imt undoubtedly rach of tlifin ex- 

 hibits occasional resemblances to the otlicrs, as in tli</ size :\.un form 

 oi the hydrotliecae, the pi-esence of veining. and other rhaiactrrs. 

 The thick pciisarc of the hydrothecae seems to vaiy greatly in 

 density, and it is probable that much of the difference between those 

 of var. rotunda and var. rt'iiosa (the two cxtrein<'s) may be siinjdy 

 due to vai'ving degrees of contraction of the perisarc, caused by the 



