NO. 1 DURHAM, BARNARD: EASTERN PACIFIC STONY CORALS 69 



become obsolete at depth in the calice. The greater number of teeth on 

 the earh'er cycles of septa is also characteristic, as is the mode of growth. 



Dimensions of corallite: Height 9 mm, diameter 4.5 mm, depth of 

 calice 3 mm. 



Holotype: AHF no. 5, with 2 paratypes. 



Type locality: Sta, 719-37, off Consag Rock, Gulf of California, 

 10-25 fms. 



Material examined: The types and 5 other specimens from the 

 same station. 



Astrangia (Astrangia) equatorialis Durham and Barnard, 



new species 

 Plate 6, figs. 29a, b 



Corallites short, cylindrical, connected by a common basal coenenchy- 

 ma, individual corallites 1.0-2.5 mm in height, 2.5-3.5 mm in diameter; 

 calices circular to oval, 2.3 mm deep; septa 26-36, usually about 30, 

 interspaces 2-3 times as wide as the thickness of the primary septa; all 

 septa moderately exsert, narrow at the top, those of the first cycle slight- 

 ly more prominent than the remainder; inner edges descend sharply to 

 bottom of fossa; first cycle septa usually with 3 or 4 distantly-spaced, 

 elongate, slender, paliform lobes which project towards the center of 

 the calice, later cycles with a lesser number of paliform lobes ; first cycle 

 of septa projecting inwards about half the distance to the center of the 

 calice, second and third cycles of septa successively narrower, with third 

 cycle projecting in about one-third the distance to the calice center; 

 septal faces with relatively few and small granules ; costae corresponding 

 to septa, indistinct, at top of corallite represented by a narrow row of 

 granules which becomes wider a short distance below, where the costae 

 are represented by broad, low ridges composed of granules; costal inter- 

 spaces on lower part of corallum about one-fourth the width of the 

 costae, somewhat granulated toward the top of the corallum ; columella 

 moderately large but poorly developed, composed of 6-8 thin, distant, 

 elongate paliform teeth. 



Remarks: This species may be separated from A. {Astrangia) 

 gardnerensisj new species by the extremely deep calices and sparse, slender 

 paliform lobes. 



Dimensions of corallite: Height 2 mm, diameter 3 mm, depth of 

 calice 2.5 mm. 



Holotype: AHF no. 6. 



Type locality: Sta. 31-33, Gardner Bay, Hood Island, 4 fms. 



Material examined: The type and 2 fragments from the same 

 station. 



