HENRY SIDEBOTTOM ON LAGENAE OF THE SOUTH-WEST PACIFIC. 381 



The tube is coiled back upon itself. The orifice is situated in a 

 small depression. A solitary specimen. Locality : No. 6. 



Lagena globosa Montagu sp. var. emaciata Reuss. (PI. 14, 



figs. 13-15). 



Lagena emaciata Reuss, 1862 (1863), p. 319, pi. 1, fig. 9. 



There is present in these gatherings a very fine series of this 

 elongate form of L. globosa. It occurs at many stations. There 

 is a complete gradation of forms right up to fig. 14, which 

 corresponds to L. ovum. As one would expect, several are pointed 

 at the base, as in fig. 15. In figs. 13 and 15 the aperture is 

 fissurine, and in fig. 14 it has three radiating fissures. The 

 internal tube is straight and free. Jjocality : Chiefly Nos. 

 19, 20, 29. 



Lagena apiculata Reuss. (PI. 14, figs. 16-20). 



Oolina ajncidata Reuss, 1851, p. 22, pi. 1, fig. 1. 

 Lagena apiculata Reuss, 1862 (1863), p. 318, pi. 1, figs. 1, 4-8, 

 10-11. 



Mr. Millett, in his Malay Report under this heading, remarks, 

 *' Bearing in mind that most, if not all, of the Lagenae have their 

 apiculate condition, it seems unnecessary to endow each with a 

 separate name ; but pending an entire reform of the classification, 

 it may cause less inconvenience for the present if these names be 

 retained." It is difficult to deal satisfactorily with the apiculate 

 forms in these gatherings. One cannot in many cases draw a line 

 of demarcation between the apiculate and non-apiculate forms, as 

 they pass insensibly into one another. I am not sure, however, 

 if some distinction may not have to be made when the apiculate 

 portion is a tube, instead of being solid. I do not think the 

 position, or nature, of the aperture, or the slight curving of the 

 test sufficient to warrant the giving of a specific name. For 

 those who take an opposite view there is a fine field open in these 

 S.W. Pacific gatherings. Beautiful examples occur like those 

 represented by figs. 16-18. I place them under this heading, but 

 to me they seem to be as follows : 



PI. 14, fig. 16. A doubly ectosolenian, and entosolenian form of 

 a typical Z. globosa. 



