THE MOUNT DESEET REGION 337 



Smittina BELLA (Biisk), 1860. PI. 9, fig. 7; pi. 13, fig. 9; 

 pi. 14, fig. 11. (Whiteaves, 1901, p. 103 (PorelJa), references. 

 Gulf of St. Lawrence.) Not common, taken once at a shore 

 station, 12, and at dredging stations 58, 62, 71, 83, and 121. 

 The synonymy of this species has been greatly confused, and 

 I am not at all certain that it is completely untangled yet. 

 Nordgaard (1918, p. 67) gives a partial synonymy, with ref- 

 erences. The Mt. Desert Island specimens in every detail 

 agree well with the excellent figures of Levinsen (1916, pi. 24, 

 figs. 13 and 14). I have no doubt of the identity of Nord- 

 gaard 's and Levinsen 's material, nor of the identity of my 

 specimens with theirs, but if Hincks' figures and description 

 are correctly taken from Busk, there is a mistake somewhere, 

 as his description indicates deep sutures between the zooecia, 

 and a punctured ovicell. In the hella of Nordgaard and Lev- 

 insen and of the present paper, the zooecia are somewhat 

 rounded up on the frontal surface and with shallow marginal 

 depressions only for a short time in the young, while the 

 ooecium is imperforate except for a single pore of varying 

 size (often quite large) in the distal portion. Also, the sec- 

 ondary calcification (which appears very early) covers both 

 zooecia and ooecia with an almost level crust, with large tre- 

 mopores on the frontal surface and the large pore of the 

 ooecium. The secondary crust from the zooecia on either 

 side meets in the midline of the ooecium to cover the half 

 or more of the ooecium nearest the aperture, while the similar 

 layer of the distal zooecium grows backward to cover the dis- 

 tal portion of the ooecium. The large pore of the ooecium 

 may be at the junction of the three secondary layers, or it 

 may be surrounded by the layer from the distal zooecium. 

 Dissection shows this pore penetrating the primary layer of 

 the ooecium. The oral lyrula is distinct and squared, the 

 cardelles not well developed, though dissection shows them as 

 small pointed teeth. The operculum is thin, with a pair of 

 curved sclerites well within the border. 



In addition to the Mt. Desert Island specimens, I have one 

 from Gaspe Bay, Gulf of St. Lawrence, labeled "Whiteaves, 



