74 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 16 



about half as prominent as first and second cycle members ; septa narrow 

 at top, inner edges descend sharply to bottom of calice, inner edges of 

 first and second cycle septa with about 5 moderately small teeth grading 

 into the columella at the bottom which is composed of about 10-12 

 anastomosing paliform lobes; other septa slightly dentate; septal faces 

 with moderately abundant fine granules ; costae equal, corresponding 

 to septa, broad, with narrow, shallow interspaces ; surface of costae with 

 moderately abundant small granules. Some of the corallites show a thin 

 calcicular epitheca arranged in rings. 



Rernarks: This species may be distinguished readily from all other 

 described Eastern Pacific species of Astrangia by the long, slender coral- 

 lites, the low, uniform costae, and the extremely deep calices. 



Dimensions of corallite: Height 7 mm, diameter 2.5 mm, depth 

 of calice 2.5 mm. 



Holotype: AHF no. 10, with 5 paratypes. 



Type locality: Sta. 948-39, off Medidor Island, Bahia Honda, 

 Panama, 30-35 fms. 



Material examined: Sta. 948-39 (7). Bottom sample 332 (numer- 

 ous worn specimens). Cat. nos. 34.1-34.2. 



Distribution: The type locality and Bahia Honda, off North 

 Island, 30-50 fms. 



Astrangia (Astrangia) lajollaensis Durham 

 Plate 7, fig. 34 



Astrangia {Astrangia) lajollaensis Durham (1947), Geol. Soc. Am., 

 Mem. 20, pp. 28-29, pi. 2, figs. 14, 15, 18, 20, 21. 



The diameter of this species ranges in size from 3 to 6 mm, the 

 largest specimens coming from the Marcy Channel locality. The latter 

 forms have more elongate corallites and shallower calices ; the septa are 

 more numerous (up to 48) and heavier, exhibiting a tendency toward the 

 Pourtales septal plan, with a columella only slightly papillose; the septal 

 granules are heavier and more abundant than in the holotype. Specimens 

 from Dewey Channel are intermediate in size between the holotype and 

 the Marcy Channel forms, having still shallower calices, thicker septa 

 and heavier paliform teeth. In the specimens from San Luis Obispo Bay, 

 the upper parts of the first cycle of septa are not divided into paliform 

 lobes. This character seems to vary in individual corallites. 



This species is reported as abundant from Point Conception south- 

 ward along the southern California coast to San Diego. It has also been 

 found as far south as Santa Margarita Island, Magdalena Bay. It is 

 found intertidally and in beach gravel. 



Hypotype: Cat. no. 35.1 (Sta. 885-38). 



