henry sidebottom on lagenae of the south-west pacific. 379 



Family LAGENIDAE. 



Sub-family Lageninae. 



Lagena Walker and Boys. 



Lagena globosa Montagu sp. (PI. 14, figs. 1-6). 



^erpula {Lagena) laevis globosa Walker and Boys, 1784, Test. Min.y 



p. 3, pi. 1, fig. 8, 

 Veo'miculum glohosmn Montagu, 1803, Test. Ih'it., p. 523. 



In these gatherings, Lagena globosa is present in a great variety 

 of forms. Besides the strictly globular, sub-globular, ovate and 

 pyriform, there are specimens that run into L. laevis and 

 L. apiculata. The internal tube, when present, often differs in 

 character, and mav be free or attached to the test. The orifices 

 of the various forms also vary greatly. The tests are sometimes 

 wonderfully transparent, thin and highly polished, at other times 

 thick and opaque. 



PI. 14, fig. 1 is doubly entosolenian, orifice fissurine. 



PI. 14, fig. 2 is globular, and has the sides of the projecting 

 mouth much flattened, causing the orifice to be a very narrow slit. 

 There is a pinching in of the sides of the mouth at the centre, 

 which apparently divides the orifice into two parts. Locality : 

 Uncertain. 



PI. 14, fig. 3 has a circle of projecting points surrounding the 

 simple aperture. There is no internal tube. Very rare. Locality : 

 Uncertain. 



PI. 14, fig. 4 is globular, and has a hood in which the orifice is 

 situated. I cannot give the exact locality for this globular form, 

 but there is a variety, very similar, which occurs at many stations, 

 the chief difference being that the test is slightly elongate, tapering 

 towards the oral end, and so causing the hood to be less pro- 

 nounced. A few are very slightly compressed. Locality : Chiefly 

 Nos. 30, 32.* 



PI. 14, fig. 5 is the compressed variety of fig. 4. Locality: 

 Ohiefly Nos. 2, 17. 



Except that the tests are not partially carinate, these two 



* Note. The numbers thvoughout this work refer to my Chart on 

 pp. 376-8, where will be found the official numbers of the stations with 

 other particulars. 



