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



Lagena gracilis Williamson. 



Lagena gracilis Williamson, 1848, p. 13, pi. 1, lig. 5. 



This variable species occurs sparingly at a good many stations. 

 Forms similar to the Challenger illustrations, pi. 58, figs. 3, 7, 8,, 

 9 and 23, are present, besides some that tend towards the apiculate 

 form of L, striata. Locality : Chiefly No. 17. 



Lagena semistriata Williamson. 



Lagena striata var. ^ semistriata Williamson, 1848, p. 14, pi. 1, 

 figs. 9, 10. 



The tests, which are not very numerous, vary a good deal in 

 their contour. A few are of the L. clavata form ; and one or 

 two, with their projecting spines at the base, are very near to 

 Oolina striaticollis d'Orbigny, 1839, pi. 5, fig. 14. Locality:. 

 Chiefly Nos. 21, 22. 



Lagena thornhilli sp. nov. (PI. 15, fig. 26). 



Body of test globular or slightly ovate, round in section, with 

 long, tubular neck. Three wings, equidistant, run from the 

 orifice to the edge of the test and thence, as a small keel, down 

 to the centre of the base. In each of the three partitions are 

 two raised oval rings, slightly pointed at their ends, one within 

 the other. The wings are sometimes striated. The late 

 Mr. Thornhill was particularly interested in this handsome 

 Lagena, and often spoke of it as the " New Zealand Chief," 

 for it reminded him of the way in which a chief is decorated. 

 I have, therefore, named it after him. It seems to be a winged 

 and varied form of L. sulcata. The striae referred to above show 

 in another specimen, which is not in such good condition as the 

 one drawn. Five are marked on the chart as occurring. One is 

 very badly broken and is a doubtful specimen. Two others are 

 broken and not quite typical. Locality : Nos. 2, 3, 6, 7. 



Lagena striate -areolata Eymer Jones (PI. 15, fig. 27). 



Lagena valgaris Williamson var. striato-areolata Rymer Jones,. 

 1872, p. 53, pl. 19, figs. 21, 21a. 



Body of test ovate, neck long, four small wings start part way 

 up the neck and run down to the sides of the test. About three- 



