60 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 16 



Family Astrangiidae 



Genus ASTRANGIA Milne Edwards and Haime 



Astrangia Milne Edwards and Haime (1848), Comptes Rendus Acad. 

 Sci. Paris, vol. 27, p. 496. 



Genotype: Astrangia michelinii Milne Edwards and Haime. 



Key to the Species of Astrangia from the Eastern Pacific Ocean 

 1. No pali or paliform lobes present 2 



1. Pali or paliform lobes present 3 



2. Adjacent corallites with a common wall 



A. (Coenangia) conferta Verrill 



2. Corallites not adjacent, connected by base only .... 

 A. {Astrangia) tangolaensis Durham 



3. All septa narrow, not rounded at top of calice .... 4 



3. At least primary septa well-rounded at top of calice . . . 17 



4. Individual corallites submerged in a mass of coenenchyma . 

 A. {Astrangia) browni Palmer 



4. Individual corallites not submerged, united only by their bases 5 



5. Corallites elongated . A. {Astrangia) howardi, new species 



5. Corallites relatively short 6 



6. Uppermost paliform lobes larger 



A. {Astrangia) santelmoensis Durham 



6. Paliform lobes all of the same length 7 



7. Costae obsolete . . A. {Astrangia) hancockij new species 



7. Costae well-developed 8 



8. Septa 24 or less . . .A. {Astrangia) costata Verrill 



8. Septa 26-40 9 



9. Paliform lobes slender 10 



9. Paliform lobes stout 11 



10. Paliform lobes simple, elongated 



A. {Astrangia) equatorialis, new species 



10. Paliform lobes irregular in shape, fused, branched 

 A. {Astrangia) calif ornica, new species 



11. Paliform lobes 2-4 12 



11. Paliform lobes 5-10 15 



12. Primary septa thickest 13 



12. Septa subequal in size 14 



13. Corallites diverging . A. {Astrangia) coronadosensis Durham 

 13. Corallites not diverging, but somewhat submerged 



A. {Astrangia) gardnerensis, new species 



