182 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Islands, Lower California, 28°12'35"N, 115°34'35"W, 69 fms, and 

 Raza Island, 28°48'00''N, 113°00'00"W, Gulf of California, 40 

 fms. Also at Middle and Hein Banks, Puget Sound, Washington, Dr. 

 J. L. Mohr, collector. 



Reginella mattoidea new species 



Plate 28, fig. 2 



Zoarium encrusting on shells, worm tubes and nullipores, dull white 

 (mattoid) like a delicate patina, even the youngest zooecia very little 

 shining. Zooecia of moderate size, 0.40 to 0.55 mm long by 0.35 to 0.40 

 mm wide, the smallest of our species. The pericyst is ventricose but less 

 so than in mucronata; costules usually 6 pairs (5 to 7), broad at the base 

 and narrowing nearly to a point at the center of the front, the lumen 

 pores small, 1 to 3 in number, often only the outer one present ; grooves 

 broad and extending in full width across the front, the lacunae 7 to 10 

 on each side, narrow and slit-like ; rarely there is a trace of a carina. The 

 costae forming the proximal border of the aperture are broad, with a 

 strong vertical raised rib across its upper surface and extending slightly 

 around the angles of the aperture. The aperture is comparitively small 

 (0.12 mm long by 0.14 mm wide in the infertile zooecia, and 0.16 mm 

 wide in the fertile zooecia). 



The ovicell is round, moderately large (0.26 mm in either dimension) 

 with numerous pores, roughened and with the same texture as the pericyst. 



It is more delicate and neater in appearance than the other species of 

 the genus ; the narrower aperture, the finer character of the pericyst with 

 a larger number of lacunae, are evident. No spines, no avicularia and no 

 dietellae. 



Type, AHF no. 46. 



Type locality, Hancock Station 1064, oflE Santa Barbara Island, Cali- 

 fornia, 33°39'01"N, 119°02'20"W, 27 fms, 7 colonies. Also at Stations 

 137-34, Clarion Island, west of Mexico, 57 fms, and 275, Raza Island, 

 Gulf of California, 28°48'00"N, 113°00'00''W, 40 fms. Albatross Sta- 

 tion 2994, Revillagigedo Islands, west of Mexico. 



((/ Reglnella spitsbergensis (Norman), 1903 

 Plate 28, figs. 5 and 6 



Cribrilina annulata var. spitsbergensis Norman, 1903:103. 



Cribrilina annulatUj Waters, 1900 :64. 



Cribrilina annulata var. spitsbergensis, Nordgaard, 1918:50. 



