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



length, but this is not always present. One specimen has three 

 equidistant keels springing from the orifice and running well 

 down the test, and as the whole shell remains round in section, it 

 may be taken as the trifacial form. This was found at No. 7. 

 Locality : It is marked as occurring at the following : Nos. 3, 6, 

 9, 10, 15, 17. Very rare. As there are two tests on the square 

 which do not belong to the set, the respective localities become 

 uncertain. 



Lagena striatopunctata Parker and Jones var. nov. ftisiformis 



(PI. 16, fig. 13). 



There is only one specimen of this beautiful Lagena. It has 

 nine thin costae running lengthwise down the test. The per- 

 forations of the costae are very fine, and cause a slight bulging at 

 the sides. My drawing is not delicate enough in this respect. 

 The body of the test is a little roughened and semi-opaque, and 

 this is owing to innumerable fine pores. Locality : No. 1. 



Lagena striatopunctata Parker and Jones var. spiralis Brady 



(PI. 16, fig. 14). 



Lagena spiralis Brady, 1884, p. 468, pi. 114, fig. 9. 



Nearly one hundred specimens are on the slide. I remember 

 Mr. Thornhill remarking that he was tired of picking them out. 

 They vary greatly in their contour, and also in the amount of 

 *' screw " that the costae take on. In all cases these run a little 

 up the neck, the perforations ceasing before the costae. In one 

 or two instances the perforations are confined to the base of the 

 test, and one or two have the neck bent to one side, as is so often 

 the case in the type form. It is marked to occur at thirteen 

 stations. Locality : Chiefly Nos. 1, 2, 19, 21, 22. 



Lagena desmophora Pvymer Jones. 



Lagena vulgaris var. desmophora. Rymer Jones, 1872, p. 54, 

 pi. 19, figs. 23, 24. 



The examples are similar to the Challenger illustration, pi. 58, 

 fig. 43. Nine found. In all except one the decoration is confined 

 to the lower half of the test. L^ocality : Nos. 25, 31, 32. 



