THE MAKlNi: ALCi.E OF NKW ENGLAND. 139 



lasii^uito, apic'i's iniuh incurved, branches beset tbiou^nhout with very 

 short incurved or recurved branchlets, cells in upper part scarcely as 

 long as broad, two to three times as long below, corticating cells form- 

 ing a sharply detined band at the nodes; tetraspores and favellai? 



lu eight leet of water. 



Cauarsie, L. I., Mr. A. B. Young. 



This curious species has uufortunately never been found in finit. Wt- liavc only 

 •^t>en three specimens, which were all collected by Mr. Younj;. The lar;:;<'st was about 

 ;liree inches high and the tilamcnts were coarser than those of C. iUapUanum and C. 

 trklum. It is easily recognized by the numerous short incurved branchlets which 

 iriso singly or in twos and threes at the nodes. It is jmssiblo that a largo series of 

 >pecimens would have shown that tho present is a form of some other species, but 

 when received from Mr. Young in I87b it seemed so distinct that the name C. Toungii 

 was given to it, and under that name it was mentioned in the Rex)oi-t of the U.S. Fish 

 Commission for 1675, but without any description. The Ilonnoceros Capri-Cormi of 

 Keinsch, from Anticosti, judging from the plate and description in the Contribntiones, 

 published in l>T4-'7r), is apparently the same as f. YouiujU, and the name of Keinsch 

 has the priority. 



Suborder SPYRIDIE.E. 



Fronds filiform, mouosiphoiious, formed of longer branching filaments 

 of indeterminate growth, from which are given off short, simple branches 

 i»f determinate growth, cells of main filaments corticated throughout, 

 the secondary branches corticated only at the nodes; antheridia borno 

 < )n the secondary branches, arising from the nodes and finally covering 

 the internodes ; tetraspores tripartite, borne at the nodes of secondary 

 branches ; cystocarps subterminal on the branches, consisting of obovate 

 masses of spores in dense whorls around the central cell, with a pericarp 

 formed of monosiphonous filaments i^acked together in a gelatinous 

 substance. 



An order consisting of a single genus and a small number of species, most of which 

 ire tropical. The systematic position of the order is a matter of dispute. The fronds 

 lesemble closely those of the C'(raink(r, as do also the tetraspores, but tho cystocarps 

 ire peculiar and not closely related to those of any other order. A section of the ma- 

 ture fruit, which is usually either two or three parted, shows a monosiphonous axis, 

 around the njiper cells of which the spores are arranged in irregularly whorled groups. 

 The whole is surrounded by a wall, which is formed by the union, by means of a jelly, 

 of the elongated tips of subdichotomous filaments which arise from the cortical cells 

 of the nodes just below the sporiferous cells. Tho antheridia are first formed at tho 

 nodes, but soon extend over the internodes for a considerable distance. The devel- 

 opment of the frond is fully given by Cramer, 1. c. In the Nereis the order is placed 

 next to Ctramiaceo', and in the Epicrisis of Agardh between the iJiimontiacca and tho 

 Jrc8choutji€(v. 



