THE MAKINE ALGJil OF NEW ENGLAND. 155 



ill cavities on the branehlets; cystocarps sessile on the brauehes, ovoid^ 

 with a (listimt tt'rminal carpostoine. 



Var. FiLii uK.Mis, Ilarv., 1. e. 



Sleiuler, elongate, with longer and less arching branches. 



On wharves, sponges, v^'c, below low-water mark. 



(^>uinc\, Mass., llarvci) ; coinnion from Capo Cod sonthwanl. 



A (.■(uiiniou ami tharattoristic spocirs of L«mi<^ Island Souiul, fonninj^ very tlonsoly 

 hraiioliiiii; tul'ts. Tho braiuhrs are usually aivhol backwanls and boarsocund branrli- 

 It'ts which aiv nnuh const ricted at base. The airan^^onicnt of the tct rasporcs in cavi- 

 ties can easily be seen in fresh or alcoholic specini«>ns, but not well in pressed plants. 

 It is principally on the authority of Zanardini that our species is united with his C. 

 uncinata, and as he ha<l plenty of material for conipariscui his opinion is probably cor- 

 rect. The Adriatic specimens of C. unciiiata which we have examined corresponded 

 better with the \iiY. jUi/ormiH than with the more common secund form of Long Islan<l 

 Sound. 



L. ROSEA, (IFarv.) Tlinret. {Chryftymcnia rosea, Ilarv., PbjT. Brit., PL 

 ooS a. — Chylocladia rosea, Ilarv., Xer. Am. Bor., Part II, p. IvSO.) 



Fronds rose-colored, compressed, hollow, triangnlar in ontline, main 

 divisions simple or once or twice forked, one and a half to three inches 

 long, an eighth to a (pnuter of an inch broad, tapering at the apex, i)in- 

 nate with simple or pinnate, opposite, distichous branchlets, which are 

 nuicli contracted at the base ; tetraspores tripartite, sunk in cavities in 

 the cortex of branches. 



On stones and shells in ten fathoms. 



Portsmouth, X. U. ; Newport, P. 1., Harvey ; Gay Ilead, \V. G. F.; 

 Northern Enro[)e. 



A rare and beautiful species, easily distinguished from the last by being broader and 

 flattened, with beautifully regular, opposite, distichous pinna?. As far as we know, 

 'he cystoeaqiic fruit of this species has never been seen. It is tolerably abundant on 

 liells o{ Mytilus, in company with ScinaiafurceUata, off Gay Head. 



CUAMPIA. 



(In honor of J/. Dcschamps, a French botanist.) 



Fronds fdamentous, branching, hollow, nodose, formed of one or more 

 layers of roundish-angular cells with cellular diaphragms at the nodes, 

 traversed internally by a few longitudinal filaments; tetraspores trii)ar- 



ite, scattered in the cortex; cystocarps as in Lomentaria. 



A small genus, comprising about a dozen species, most of which arc tropical or Aus- 



lulian, our species, C.parvnla, being the most widely dilfused. The genus resembles 

 f 'unentaria very closely in the cystocarpic fruit. Tho fronds, however, arc not only 



•nstricted at the joints, but are nodose throughout, a diajdiragm composed of a sin- 

 gle layer of cells extending across the nodes. The tetrasi»ore8 are not contained in 



;»nken cavities as in Lomentaria. A secticm of the cystocarps of ('. ;}rt;rM/rt and X. 



I'cinata shows the same arrangement of the spores, but in th<; first-nauied speciea. 

 the carpogeuic cell is larger and pr(»jects further into the couceptacle. 



