254 APPENDIX. \ 



cells. This arrangement of the interior of the tubes is not 

 unlike, in principle, to that of some of the multilocular 

 shells, such as Spirula for instance, but the diaphragms 

 are less symmetrical and of a more acute concavity. The 

 communication between the neighbouring tubes is another 

 remarkable character of this fossil genus, which, however, 

 it possesses in common with Favosites and a few other 

 genera, but these lateral openings are few in number, and 

 do not seem to exhibit any regularity in their distribution, 

 Linn6 would probably have placed this fossil in his genus 

 MiLLEPORA, but its proper situation in the modern system 

 is probably next in order to Favosites. 



Specific Character. 



C. intricata. Tubes cylindric, small, separated in the 

 mass by nearly the distance of their diameters ; siphuncle 

 very obvious at the opening of the tubes on the surface, 

 and placed on one side. PI. 14, fig. 1, nat. size, a. magnified. 



B. CLASS PISCES. 



PLATIROSTRA EDENTULA, Lesueur. 



In addition to the detailed description by Mr. Lesueur, 

 in the first volume of the Journal of the Academy of Na- 

 tural Sciences of Philadelphia, the following characters may 

 serve to complete the descriptive representation of this sin- 

 gular fish, as it appears in the living state. 



Colour above livid-brown, immaculate on the body, but 

 with small blackish spots placed in circles or ovals on the 

 head as far back as the gill opening, on the upper part and 

 sides of the rostrum, about the eyes and on the unwrinkled 



