t 
the Colony of Western Australia. 
330. CoDiDM laminarioides., n. sp. ; stipite brevi cuneato mox in frondem amplissimam (2-3 peda- 
lem) planam subsimplicem v. parce lobatam expanse. At Eottnest and King George’s 
Sound, on the under surface of table-shaped rocks. If this be only a form of C. elongatvm 
it is indeed an extraordinary one. The undivided frond is often three feet wide by two feet 
long, resembling a piece of green cloth (227). 
331. CODIUM spongiosum, n. sp. ; fronde sessili molli polymorpha varie lobata et spongioidea; fills 
interioribus laxiusculis in gelatina immersis, periphericis cylindraceis v. pyriformibus 
obtusis ; spermatiis fusiformibus basi et apice acutis. On shells and stones, &c., about low- 
water mark, common ( ). I do not wonder that this has not been brought to Europe, 
as it is almost impossible to prevent the spongy mass decomposing (with a very unsavoury 
smell) during the process of drying. 
332. CoDlUJi mamillosum, n. sp. ; fronde globosa vel reniformi puncto afiixa solida ; fills interioribus 
densissime intertextis arachnoideis gelatina subsolida obvallatis, periphericis maximis in- 
flato-cylindraceis, eorum apicibus ad superficiem frondis quasi mamillis directis, siccitate 
sericeo-nitentibus. Fremantle and King George’s Sound, cast ashore (162). It forms a 
very solid, green, mammillated ball, composed internally of very slender, densely packed 
threads, throwing off to all sides externally, radiating branches, whose apices, closely set 
together, give the mammillated appearance to the surface. 
333. Bryopsis australis, Sond. ? Very common on rocks, at Eottnest and Carnac (161). 
334. Bryopsis sp. On Zostera, Eottnest (175). 
335. Bryopsis sp. Perhaps B. foliosa, Sond. On sand-covered rocks, Eottnest (249). 
336. DiCTYOSPHiEEiA sericca, n. sp. ; fronde umbilicata medifixa varie lacera (nunquam vesicata) 
sericea; vesiculis minimis globoso-polyhedris. On rocks near low-water mark. King 
George’s Sound, Cape Eiche, and Eottnest (160). Very distinct from D.favulosa at all 
ages. 
Order II CONFEEVACEA:. 
337. Cladopiioea valonioides, Sond. Common on rocks and in shallow water (55). 
338. Cladopiiora sp. Sand-covered rocks. King George’s Sound (46). 
339. Cladophoea sp. C. anastomosans, MS. Cast ashore at Fremantle (163). 
340. Cladophoea sp. Fremantle (176). 
341. Cladophoea sp. Fremantle (177). 
342. Cladophoea sp. Near C. pellucida. Eottnest, on reefs (275). 
343. Cladophoea sp. Allied to C. glaucescens (333). I have neither books nor specimens at hand 
sufficient to determine whether these species have been previously described. 
Order III ULVACEAl. 
344. Phtcoseeis Ulva, Sond. Garden Island. 
345. Phycoseris latissima. Ulva latissima, Auct. I cannot say to which of Kiitzing’s species 
