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



Lagena lagenoides Williamson sp. (PI. 16, figs. 26-29, and 



pi. 17, fig. 1). 



Entosolenia marginata Walker and Boys var. lagenoides 

 Williamson, 1858, p. 11, pi. 1, figs. 25, 26. 



This and its numerous variations are well represented. PI. 16, 

 figs. 26, 27. I was tempted to place these under L. marginata, 

 but the appearance of the wing caused me to hesitate and to 

 submit a specimen to Mr. Earland for examination. He reported 

 that the wing was tubulated, being " infiltrated with amorphous 

 carbonate of lime subsequent to the death of the animal." Mr. 

 Millett considers that if tubuli are present " their affinity would 

 be with L. lagenoides rather than with L. marginata." Besides 

 the two forms figured, both large and small circular examples 

 occur in the same condition, only with the tubuli showing more 

 plainly. 



PI. 16, fig. 28 represents one of the small examples. There are 

 also specimens which are apparently of exactly the same form, in 

 which the tubuli, if present, must be extremely minute. It would 

 appear therefore necessary to submit all such forms to critical 

 examination. Locality : Nos. 5-7, 11, 14, 15, 18-22. 



PI. 16, fig. 29. In this instance the keel is twisted at the base. 

 Four specimens found. Locality : Uncertain, but after station 

 No. 22. 



PI. 17, fig. 1. The test is well compressed and the orifice also. 

 Entosolenian tube short and curled. Locality : Ncs. 42-44 ; 

 frequent at Nos. 43, 44. 



+ P1. 18, fig. 22. The form occurring is very similar to the 

 figure referred to. It is rather smaller and the keel is narrower 

 and thicker ; the neck and phialine orifice are the same. Locality ; 

 Nos. 1-3, 42-44. 



Six large specimens similar to the Challenger Report figure, 

 pi. 60, fig. 14, are also present. Very rare. Locality : Nos. 2, 

 22, 24. 



Another set is similar to +pl. 19, fig. 4, but the tests are not 

 striated. Frequent. Locality : Nos. 2-8, 11. 



+ PI. 18, fig. 23. See remarks, +p. 412. Locality : Nos. 2, 36, 

 38, 39. 



+ P1. 18, fig. 29. Typical examples are very rare and not so 



