532 PROCEEDINGS OF THE NATIONAL MUSEUM vol.84 



SUMMARY OF THE REDDISH, ROSE, AND VIOLET SPECIES OP ALLOPORA 



a}. Ampullae forming definite convex blisters on the surface of 

 colony. 

 5'. Ampullae with a ridged or corrugated surface (see also poly- 

 orchis and trachysioma) ; gastropore narrow, cylindrical; 

 gastrostyle small; dactylotomes 5 to 12 with clean-cut paral- 

 lel sides, as long as width of gastrostome stejnegeri 



b^. Ampullae not wrinkled or ridged but sometimes male ampullae 

 have low central tubercle, or several, 

 c'. Gastropore narrow, ordinarily cylindrical, deep, the mouth 

 rather constricted, not obviously broader than length of 

 dactylotomes. 

 d^. Cyclosystems larger, protuberant; septa encroaching upon 

 gastropore and decurrent as ridges on its side; gastro- 

 pore deep, curved (see also campyleca and trachystoma) ; 



cyclosystems not frequently incomplete brochi 



d2. Cyclosystems very small, not protuberant; dactylotomes 

 about as long as diameter of gastrostome, which is not 

 encroached upon by angles of septa; cyclosystems often 

 incomplete or with one or more isolated dactylopores_-boreopaciflca 

 <?. Gastrostome broader than length of dactylotome. 



d'. Colony white or buff (see also polyorchis) ; gastropore sub- 

 cylindrical with a definite style chamber and robust 

 style; male ampullae with a central low tubercle, or 



several moseleyana 



d^. Colony rose or yellowish rose; gastropore broadly funnel 

 shaped, curved, with a narrow style chamber; am- 

 pullae without tubercle scabiosa 



o^. Ampullae forming low inconspicuous convexities on surface 



(see also scabiosa). 



6'. Gastropore subcylindrical, the gastrostome encroached upon 



by septa angles and narrower than length of dactylotomes, 



which are not expanded at outer end; dactj'lotomes very 



shallow solida 



h^. Gastropore funnel shaped, its mouth not encroached upon by 

 septa angles, as wide as length of the dactylotomes which 



are expanded at outer (dactylopore) end (compare pacifica) verrilli 



a'. Ampullae sunken in coenosteum, not forming superficial blisters 

 (see solida and verrilli) . 

 bK Regularly one gastrostyle to each gastropore. 



c'. Dactylotomes not unequal in length (so that cyclosystem is 

 more or less asymmetrical) . 

 d'. Gastropore cylindrical, fairly deep, without a difi'eren- 



tiated style chamber (compare verrilli) paciflca 



d2. Gastropore relatively shallow, cup-shaped, the top of the 

 large gastrostyle partly hidden by constricted sides of 

 the pore; large style chamber nearlj' filled by the style. 



e' . Colonies branched venusta 



e*. Colonies encrusting (compare papillosa) petrograpta 



c2. Dactylotomes unequal; gastropore narrowly funnel-shaped, 

 d'. Colony normally large, branching; top of gastrostyle not 

 encroached upon by outgrowths from side of gastro- 

 pore; therefore no clearly differentiated style chamber. _ calif omica 



