638 SPJLEROCOCCOIDE.E. Heringict. 



poro oblique terminal! ;i|)ortum. Placenta centralis, a Uil>o costoe 

 f'onnata, clavata, ultra medium coccidii extonsa, (ila gemmidiifera 

 numerosissima emittons. Gemmidia in lilis subclavatis a placenta 

 i|iio(|uovorsum radiantibus formata et seriata, terminalia proecociora, 

 inferiora sensim minus evoluta et angustiora. 



Spbrerosporoj in segmentis terminalihus congesUe numerosissim.T, 

 peripherico strata aliquantuliim mutato circumcirca immers.ie, ob- 

 lorigae, zonatim diviste. 



Genus a memetipso locis citatis indicatum magis quam defini- 

 luin cliaracteribus, descriptor! Algarmu Xatalensium dicatum. Duas 

 species Spb.ierococci, generis Agar.dhiani, qnarum imam inter Cbon- 

 dros, alteram inter Gelidia recepit Greville, typos generis in^icavi; 

 qtias vero species in unam conjungendas esse liodie censeo. 



A Dicranemate aliisque aftinibus proesentia tubi centralis, a 

 Spha^rococco dilTert Ileringia structura costaj sirapliciore, et sphne- 

 rosporis certo loco conjunctis. 



Species ilaque Generis hodie unica, jua j oras Capenses inliabitat. 



\. H. MIRABIMS (Ag. de Metam. Alt/.) fronde subsetacea requali 

 dicbotomo-decomposita, segmentis alterne brevioribus, laferali- 

 bus terminalibusijtie llabellato-fastigiatis. 



Sphaeroc. mirabilis Ag. in Diss. de melamorph. Aly.; Icon, ineil. tab. 

 1. Sp. A/g. p. 294. Syst. p. 230 ! 



Heringia mirabilis J. Ag. Alg. mcd. p. 08 in not. Harv. Ncr. auslr. 

 tab. LH 



Gelidium mirabile Ifarv. Gen. South. A/r. I'l. sub. n:o XXYIl! 



Sphacrococcus roslratus Ag. Sp. Alg. p. 254 et Syst. p. 218. 



Khynohococcus? roslratus Kiilz. Sp. Alg. p. 755. 



Fucus subverticillatus Mert. mscr. 



Spha3rococcus confcrvicola Cham, in Verli. der Ges. Nalurf. Fr. Ber- 

 lin I. 3 p. 177 tab. 5! Rudolph, in Lin. 1831 p. 173. 



Gelidium confcrvicola Kulz. P/tyc. gen, p. 406 el Sp. Alg. p. 767! 



llab. ad Cap. b. Spei (De-la-Lande! Chamisso! Gaudicbaiid ! Har- 

 vey! Pappe!) in Conferva hospita, Spongiis etc. 



Frons 1 4-polIicaris, crussitie punnam passerinam noiucquan.s, inferne 

 leretiuscula, supernc complanata, ramosissima, ramiiicatione dichotoma, 

 crecto-patonti, nunc tola flabellato-fastigiata, iiiuic segmentis alternis ul- 

 rinquc brevioribus alterne ramosa, rarius segmentis oppositis instrucla. 

 Ooccidia diamelro frondis, in segmcnlis latcralibus indivisis singula, in 

 fnrcntis bina, paulo supra dicliotomiam intlata, apiculo longituclincm cocri- 

 dii plcrumqiie hand altingente superata. Sphonrosporac in apicibus in- 

 cras-;iitis segmcntorum circumcirca immersa'. 



