ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 481 



Notes on Tintinnoina.* — C. A. Kofoid publishes some notes on 

 these minute Protozoa of the high seas which buikl for themselves 

 beautiful vase-shaped or bell-shaped houses or loricae of delicate texture, 

 elaborate patterns, and wide range of form. In 1873 Haeckel figured 

 the mitre-like Didyocysta tiara, wliich has not been seen since in spite 

 of much searching. Kofoid gives reasons for believing that Haeckel's 

 figure represents a large lorica of D. Jepida, with ten instead of the 

 usual eight fenestra, which had shrunken in the aboral region as the 

 result of desiccation. He figures a lorica in which the aboral contraction 

 due to shrinkage was observed as the formalin in the preserved sea- 

 water containing the specimens was allowed to evaporate. 



Kofoid establishes Petalotricha entzi sp. n. on the strength of two 

 figures given to Entz of an Adriatic form which he mistakenly referred 

 to P. ampulla ampulla. The new species is wholly distinct, and is 

 peculiar in the submerging of the oral shelf by the thickened wall of 

 the nuchal region, as also in the fluted oral shelf and ridged bowl. 



♦ Publications Univ. California (Zool.) xvi. (1915) pp. 63-9 (8 figs.). 



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