134 III. DIST. CHAR. Prototype. 



relate to parts which afford only temporary 



The LID of the Receptacle (Operculum} 

 Flat (planum) Convex (convexum) Concave (concavum) 



The DISSEPIMENTS (Dissepimenta) 



<z.)Horizontal (horizontalia) at right angles, with the stirplets 



which they connect. Tubipora musica, T. 27. Ellis. 

 Oblique (obliqua) neither horizontal nor perpendicular placed 

 in a diagonal direction, with respect to the connected stirplets. 

 We have observed this position in the dissepiments of some 

 fossil Madrepores. 



#.)Parallel (parallela) continuing in one direction. 



Promiscuous (promiscua) crossing each other in various direc- 

 tions 



c.)Straight (recta) Curved (curva) Sfc. 



rf.)Distant (distantid) remote from each other Approximate (ap- 

 proximata) near to each other Crouded (conferta) close to 

 each other ; touching. 



<-.) Smooth (lavia) Sulcated (sulcata} Striated (striataj Radi- 

 ated (radiata\ 



The VESICLES (Vesiculte), 



The secondary terms, applicable to the vesiculte, are nearly 

 the same as those by which the disposition, situation, and 

 form of the genuine receptacles are distinguished, v. terms 

 b. c. g. h. p. 124. 127. 128. c. 



Note, in the above table, the species enumerated for the pur- 

 pose of pointing out the application of precedent terms, have 

 generally been selected from the Natural History of Zoo. 

 pkytes, by Ellis and Solander. We preferred a reference to 

 that work, rather than to any other we were acquainted with* 

 as it contains most excellent figures, and may easily be pro- 

 cured by the English student. The references are, for the most 

 part, marked merely " Ellis." 



