76 Cincinnati Society of Natural History. 



the most of them being equivalent to his sections. All are 

 arranged under Algse, and a number of new genera are pro- 

 posed. For example, we find that Rhodoinelitcs is proposed 

 for Fiuoidcs strictus. Chondrites is proposed for the group 

 Gigartinites of Brongniart. Sphcsrococcitcs, Halymenitcs, 

 Munsteria, Haliserites, Zonarites, Cystoseirites, are among the 

 new names. Fucoides taxi/or jnis Sternb., 1825, is referred to 

 Cystoseirites; and Fucoides dichotonius Reich (in litt), is 

 referred to Haliserites. The species referred to Chondrites 

 are as follows : 



C. targionii, Br. C. antiquus, Br. 



dilForniis, Br. circiniiatus (!), Br. 



aequalis, Br. laxus, vSternb. 



intricatus, Br. obtusus, Br. 



recurvus, Br. turbinatus, Br. 



furcatus, Br. discophorus, Br. 



Of these, the ist, 2d, 5th, 6th and 7th, we have referred 

 above to the genus Gi^artinites. The others are for the 

 present left in Chondrites, although it is not improbable that 

 they will be subsequently referred to other genera. Some of 

 them are of undoubted algal origin. In the same year (1838) 

 Conrad* changed Harlan's Fucoides allegJianiensis to F. har- 

 lani, and at the same time mentioned several other species of 

 Fucoides, but without descriptions. Among them was F. 

 demissus, which was subsequently described by Hall as Phy- 

 topsis tubu/osa, and is now generally recognized as a coral. In 

 the same report (p. iii) Fucoides cauda-galli was named. 

 This species was afterward referred to Spirophyton by Hall, 

 but it .should probably be placed in the genus Taonutiis. 

 This question we hope to discuss another time. In 1840, S. 

 S. Haldcmannt published a description of a fossil referred by 

 him with a ([uery to the genus Fucoides, coining for it, how- 

 ever, in the next paragraph, the new genus Sco/ithus. This is 

 evidently a worm burrow, and ever since its description has 

 been considered the type of Sco/ithus. It need not be further 

 considered. 



■'id Ann. Kept. Geol. Sur. N. Y., 1S38, p. 113. 



tSupplcment to No. i of " A Monograph of the I.iinniades or Fresh Water Shells 

 of North America." 



