FAMILY 5. HYPERAMMINIDAE 87 



included sponge spicules ; apertures formed by the open ends of 

 the tubular chamber. 



Jurassic to Recent. Most abundant in deep cold waters but not 

 limited to such conditions. 



Genus DENDROPHRYA Str. Wright, 1861 

 Plate 6, figures 12, 13 



Genotype, by designation, DeTidrophrya erecta Str. Wright 



Dendrophrya Str. Wright, Ann. Mag. Nat. Hist., ser. 3, vol. 8, 1861, 

 p. 133. 



Test attached, consisting of a proloculum and tubular second 

 chamber, simple or branched, erect or with spreading arms; 

 wall with a chitinous lining and an outer arenaceous layer ; aper- 

 tures at the ends of the tubular portion. 



Cretaceous to Recent. The recent species are apparently con- 

 fined to cool waters at shallow depths. 



Genus DENDRONINA Heron-Allen and Earland, 1922 

 Plate 7, figure 3 



Genotype, by designation, Dendronina arborescens Heron-Allen and Earland 



Dendronina Heron-Allen and Earland, British Antarctic ("Terra 

 Nova") Exped., 1910, ZooL, vol. 6, no. 2, 1922, p. 78. 



'Test sessile or free, unseptate, built of fine mud, sand-grains 

 and sponge-spicules, agglutinated with varying proportions of 

 cement and furnished witli an internal or external chitinous 

 membrane. 



Initial portion of sessile specimens either a depressed amoebi- 

 form basal pad, with ramifying passages converging to a central 

 cavity, or a more or less turgid basal chamber, with simple or 

 labyrinthic cavity. From the basal pad or chamber rise one or 

 more tubular outgrowths, simple or branching, diminishing in 

 diameter towards the terminal apertures. 



In free-growing specimens the basal portion is bulbous with 

 entire or labyrinthic cavity, often of large size, from which 

 arise one or more tubular outgrowths developing as in the 

 sessile form. 



Very fragile in the dry condition, but probably more or less 

 flexible in the living state." 



