118 . III. DIST. CHAR. Prototype. 



90. A.culeal (aculeale) having the form of an 



aculeus or prickle. 

 &c. &c. 



Twisted (contortum) as in Tubularia indivisa &c. 



Protuberant (tumidum) swelling; standing out beyond the joints 

 which it connects. The internode is often protuberant ; as 

 in Isis ochracea; but the knot or juncture of the joints may 

 be protuberant without an internode. Knotty (nodosum) 

 is the usual term for this structure of the geniculum; but if 

 we translate geniculum by knot (which cannot apparently be 

 avoided, as joint is constantly used for articulus by English 

 writers) the necessity of the change we have adopted is suffici- 

 ently apparent: a knotty knot is language by no means ad- 

 missible. Vide articulus, geniculum, and internodium. 



Contracted (constrictum) narrowed; less prominent than the 



connected joints; as in Isis Hippuris^T. 3. f. 15. Ellis. 

 &.)Short (breve} its thickness or diameter exceeding its length. 



Long (longum) its length exceeding its diameter 



Very long (longissimum) several times longer than thick. 



These terms short, long, and very long, apply, also, with the 

 same distinctions, to the joint; as articulus brevis, articulus 

 longus, &c. 



e .)Horny (corneum) of the consistence of horn ; as in Jsis Hippu- 

 ris. 



Spongy (spongiosum) soft and porous ; as in Isis coccinea. 



Fibrous (Jibrosum) consisting of small threads or fibres ; as in 

 many of the Corrallince. 



&c., &c. 



The SURFACE of the Stirp (Superficies) 



Smooth, or even (Items) Rough or scabrous (sealer) Striated 

 (striata) Sulcaled (sulcata} &c. &c. 



The MARGIN of the Stirp (Margo) 



Entire (integra) not divided Gashed or cut (wd*ff)divided. 



