HENRY SIDEBOTTOM ON LAGENAE OF THE SOUTH-WEST PACIFIC. 173 



late forms also occur. Locality : Nos. 4, 14, 15, 20, 24, 26, 38, 

 42-44, and a few others. 



PI. 15, fig. 24. This is closely allied to L. alifera Beuss, 1870, 

 p 467. Von Schlicht, 1870, pi. 3, figs. 15, 16, 21, 22. Locality : 

 Nos. 3. 10, and two or three others. 



PI. 15, fig. 25. This form, known as L. sulcata var. interrupta 

 Williamson, is hardly worthy of a varietal name, as it is not at 

 all uncommon for some of the costae or striae, both in L. sulcata 

 and L. striata, to be shorter than the others. 



Lagena plumigera Brady (PI. 15, fig. 26). 



Lagena plumigera Brady, 1881, Quart. Journ. Jficr. Sci., vol. 21, 



N.S., p. 62. 

 Lagena plumigera Brady, 1884, p. 465, pi. 58, figs. 25, 27. 



Two of the tests are similar to the one figured ; several others 

 are smaller and much damaged. Locality : Nos. 1, 2, 43. 



Lagena semilineata Wright (PI. 15, fig. 27). 



Lagena semilineata Wright, 1884-5, App. 9, 1886, p. 320, pl. 26, 

 fig. 7. 



Evidently a bold form of L. semilineata. Locality: Three 

 examples at Station No. 2. 



Lagena gracilis Williamson. 



Lagena gracilis Williamson, 1848, p. 13, pl. 1, fig. 5.. 



This protean species is found at many stations throughout 

 the whole series. All the forms represented in the Challenger 

 Report, 1884, appear to be present. No line of demarcation can 

 be drawn between this species and apiculate forms of L. sulcata 

 and Z. striata ; they are also linked with L. distoma Parker and 

 Jones. 



Lagena quinquelatera Brady. 



Lagena quinquelatera Brady, 1881, Quart. Journ. Micr. Sci., vol. 



21, N.S., p. 60. 

 Lagena quinquelatera Brady, 1884, p. 484, pl. 61, figs. 15, 16. 



I take this to be a variety of L. gracilis. 

 Two specimens only. Locality : No. 2. 



