76 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 16 



Type locality: Pearl Islands, F. H. Bradley, collector. 

 Material examined: The lectotype and several other corallites on 

 the same rock. 



Astrangia (Astrangia) sanfelipensis Durham and Barnard, 



new species 

 Plate 7, figs. 37a, b, c 



Corallites small, cylindrical, up to 4 mm in height; calices circular to 

 subcircular, deep; septa 32-40, interspaces as wide as thickness of pri- 

 mary cycle of septa ; inner edges of all septa strongly and nearly evenly 

 dentate; first 2 cycles of septa with 4-6 teeth, later cycles with 6-7 

 teeth ; none of the teeth strongly differentiated from each other, merging 

 with a very small, concave columella ; septa moderately exsert, primaries 

 and secondaries equally so, later cycles slightly but successively less ex- 

 sert; septal thicknesses not as differentiated as in A. {Astrangia) dentata 

 Verrill ; septa slightly rounded above, descending almost vertically into 

 fossa; septal faces with moderately large, occasionally irregular pointed 

 granules ; costae variable in development, on one specimen almost obso- 

 lete, on another specimen moderately prominent, low, rounded, gran- 

 ulated ; costal interspaces very narrow, shallow. 



Remarks: This species is similar to A. [Astrangia) dentata Verrill 

 in the number of septa but has less differentiation in the size of the septa 

 of different cycles and none of the teeth are strongly differentiated from 

 one another as in that species. It is separated from A. {Astrangia) lajoll- 

 ensis Durham by the lesser number of paliform lobes. It is rather closely 

 related to A. {Astrangia) haimei Verrill but the fourth cycle septa are 

 strikingly set off from the first cycle both in their exsertness and width, 

 and the columella is considerably smaller. 



Dimensions of corallite : Height 4 mm, calice diameter 4 mm, 

 depth of calice 3 mm. 



Holotype: AHF no. 11, with one paratype. 



Type locality: Sta. 1071-40, San Felipe Bay, Gulf of California, 

 2y2 fms. 



Material examined: The types. 



Subgenus COENANGIA Verrill 



Coenangia Verrill (1870), Trans. Conn. Acad. Arts Sci., vol. 1, p. 530. 

 Subgenotype; Astrangia {Coenangia) conferta VerriU.. 



