192 HENRY SIDEBOTTOM ON LAGENAE OF THE SOUTH-WEST PACTFIC 



They are heavily punctate at the base of the neck, and costae just 

 start to run clown the keels. Many small examples occur, which 

 come under this unsatisfactory species, but as they are mixed on 

 the various squares I can only give the stations for the whole 

 series. Locality : Nos. 1-8, 10, 11, 13, 14, 17, 21, 23-25, 29, 

 37, 39-41, 43. 



PI. 17, fig. 4. The keel splits near the top, and the space thus 

 formed is filled with shell-growth. The specimens are not in a 

 satisfactory condition for examination, so I cannot say if the 

 tubuli in the keel occupy the whole of the space. The punctate 

 border does not seem to be raised, and it shows clearer in substance 

 than the rest of the test. I believe this is the same as Challenger 

 Report, pi. 60, fig. 10. Locality : No. 44. 



PI. 17, fig. 5. T am inclined to believe that the keel has broken 

 away in these specimens, of which there are seven. They are all 

 in the same condition ; the drawing shows how the keel has 

 begun to split. Locality . Nos. 43, 44. 



+ PI. 18, fig. 24. I am now inclined to believe that in this 

 case also the keel has become fractured. 



PI. 17, fig. 6. This has a likeness to the preceding pi. 17, fig. 5. 

 The keel, which commences at the neck, soon splits and joins the 

 two borders ; the space between them is filled with shell-growth. 

 The test has a very compact look and the tubuli show clearly. 

 Rare. Locality : Nos. 42, 43. 



PI. 17, fig. 7. A solitary specimen in good condition. The keel, 

 commencing at the orifice, dies away about half-way down the 

 test. A few well-marked pores are scattered on each face of the 

 test. At the base are several short costae. Locality ; No. 37. 



+ P1. 19, fig. 9. See remarks, + p. 414. Frequent. Locality : 

 Nos. 1, 2, 10, 11, 14, 17-19, 22. Over twenty examples occur after 

 station No. 22, but the exact stations are uncertain. 



Lagena formosa Sch wager, var. (PI. 17, fig. 8). 



The drawing of this variety must be taken more or less as 

 diagrammatic. The test, which has three keels (the central one 

 commencing at the aperture) is in an opaque condition. The 

 spaces between the keels are filled with shell-growth. The tubuli 

 hardly show, unless the shell be moistened. The body of the test 

 has fine costae running lengthwise, and is finely pitted. There* 



