KONGL. SV. VET. AKADEMIENS HANDLINGAE. BAND 32. N:0 I. 37 



Genus 6. Camptolithus n. 



Tnstead of tabnla^ the caliclcs are provided witli a vesicnlar tissue like that of the 

 coeneiichyma. 



Species 36. papillatus Rominger. 



Genus 7. Dij)loepora. Q.uenst. 



Coenenchyma partly vesicular, partlj' bacular. 

 Species 37. Grayi E. H. 



Tribus III. Pycnolithiiia}. 



Genus 8. Pycnolithus n. 

 Coenenchyma dense or compact, of granular texture. 

 Species 38. bitidus n. 



Subfamily Coccoseritlje. 



Septa short, thick, central area of the calicle filled with columnar baculi the pointed 

 tops of which form papilla; on the bottom of the calicle. Coenenchyma bacular with no 

 or narrow tubes, in which few tabulee. 



Genus 1. Coccoseris. Eichwald. 



The sclerenchyma entirely composed of baculi, no tabulte. 

 Species 1. Ungerni Eichw. 



2. microporus Eichw. 



3. megastoma M'Coy. 



4. var. minor n. 



5. micraster n. 



Genus 2. Protarcea. E. H. 



Thin, incrusting coral, sclerenchyma much resembling that of the preceding genus, 

 thongh moi'e incoherent as to the septa, and with a very scarce coenenchjana. 

 Species 6. vetusta J. Hall. 



Genus 3. Acantholithus n. 



Septa thin, but built upon the same ])lan as in Coccoseris, coenenchyma with a 

 few tabulated tubes. 



Species 7. lateseptatus n. 



8. asteriscus Ferd. Roemer. 



K. Sv. Vet. Akiul. Uniull. Biiml 33, N:o 1. 



