400 HENRY SIDE BOTTOM ON LA.GENAE OF THE SOUTH-WEST PACIFIC. 



is fractured in all the examples found, one cannot be certain of 

 its exact nature. The convex base apparently belongs to this 

 inner chamber (?). The drawings will explain better than any 

 written description. It may turn out to be a complex species of 

 a new genus. Locality: Nos. 3, 17, and one specimen (doubtful) 

 at No. 29. 



Lagena sp. incert. (PI. 17, fig. 6). 



There are only two examples of this doubtful Lagena. The 

 oval body of the test is slightly roughened, semi-transparent, and 

 apiculate. I am not sure if the apiculate process is tubular. In 

 both cases the long, tubular neck is fractured at the end, so we 

 are left in ignorance as to the nature of the aperture. The 

 Oolina lanceolata, Terquem, 1858, pi. 1, fig. 1, is the nearest in 

 outline to my drawing that I have noticed. Locality : No. 11. 



Lagena laevigata Reuss sp. 



Fissurina laevigata Keuss, 1850, p. 366, pi. 46, fig. 1. 



This common species is found at nearly all the stations, and the 

 specimens vary greatly. Some are very large and others minute, 

 A few are circular in outline and much compressed. The Fissurina 

 ohlonga Reuss, 1862 (1863), p. 339, pi. 7, fig. 89, is present, and 

 also a form similar in outline, which has the mouth placed at one 

 side and the entosolenian tube attached to the back of the test. 

 Specimens occur which are much flattened and have very short 

 necks. 



Lagena laevigata Reuss sp. var. (PI. 17, fig. 7). 



This form of Z, laevigata, with its curious orifice, appears to 

 be allied to Z. millettii, Chaster, -1892, p. 61, pi. 1, fig. 10. Most 

 of them have a very small pimple at the base. It occurs at 

 several stations. Locality : Chiefly No. 19. 



Lagena laevigata Reuss sp. var. nov. virgulata (PI. 17, fig. 8). 



There are four small, narrow, opaque markings on the test, 

 two on either face. They are placed rather below the middle, 

 and I think they are sometimes just raised above the surface. 

 The contour of the test varies both as to compression and length. 



