. III. DIST. CHAR. Prototype. 113 



87. FrondalCfrondak} deriving its form from a 

 frond, or the peculiar leafing of Ferns and 



Trichotomous (trichotoma) branched; dividing by threes. 



Corallina tridens, Ellis. T. 20. f. a. 

 Pinnate (pinnata) branched; the branches lateral, regularly 



placed in two single, opposite rows. Sertularia frutes- 



cens, Ellis. T. 6. f. a. A. 

 Netted\y-bmnched(reticulato-ramosa s.retiformis) branched; 



the branches uniting with one another, so as to form a 



kind of expanded reticulation or net-werk. Gorgonia 



Flabettum, T. 17. ?. Millepora reticulata, T. 26\ f. 5. 1 



Ellis. 

 Flatly-branched (in piano ramosa) dividing in one direction 



only, so as to exhibit a flat, or fan-like expansion of 



branches. Gorgonia pretiosa, T. ]3. f. 3. 4flammea, 



T. 11. Ellis. 

 fc.)Jointed (articulata) as in Isis, Corallina, Sec. 



Nodous (nodosd) swelling or protuberant at the junctures of the 



joints; as in Isis ochracea. Gmel. p. 3793. n. 3. 

 Continuous (continua) without joints. 



ft.)Cauliform (cauliformis) long, slender, and more or less flexuose, 

 like the stem or stalk of a plant with or without branches. 

 Antipathes spiralis, T. 19. f. 1. Gorgonia viminalis, T.12* 

 f. 1. Isis Hippuris, T. 3. f. 1. Ellis. 



Scapiform (scapiformis) erect, straight, without branches; like 

 the shaft of a column ; which may be cylindrical, prismatic, 

 c. &c. Madrepora musicalis. Tubipora musica. We are 

 not acquaintd with any recent species, except the above, to 

 refer to, as an example of this term ; but the form is com- 

 mon in the fossil subjects, particularly in aggregate fold* 

 ments. 



Turbinate (turbinata) inversly conical small at the base, and 

 increasing upwards, Madrepora- Cyathus, Ellis. T. 23. 

 f.7. 



