710 MESSES. E. HEEON-ALLEN AND A. EAELAND OJST THE 



1 Station. 



A good many fine and well-developed specimens at Stn. 11. The records of this 

 very striking species appear to be confined to the seas round New Guinea and the 

 tropical Pacific, and its occurrence on the farther side of the Indian Ocean is very 

 noteworthy. 



393. Truncatulina tubulifera, sp. n. (Pi. LII. figs. 37-40.) 



4 Stations. 



At Stns. 1, 6, and 7 a few somewhat poorly developed specimens were found, of a 

 type with which we have been acquainted for many years as occurring somewhat 

 rarely in shallow-water tropical gatherings. At Stn. 11 many very fine specimens were 

 found. It is undoubtedly closely allied to T. reticulata Czjzek, but differs in the 

 character of its aperture, which is normally truncatuline instead of being situated on a 

 produced neck. 



Test free, biconvex, consisting of two to three convolutions, all visible on the 

 superior face, the last convolution only on the inferior. Six to seven chambers in the 

 last convolution. Sutures flush, but thickened. The walls of the chambers between 

 the sutural lines are coarsely perforate, each perforation often produced into a raised 

 tube. These tubes may coalesce so as to form a cristate growth following the curve 

 of the chamber and opening at the top into a crater. The tubular outgrowths are 

 especially marked on the superior face, often wanting on the inferior. Aperture a 

 curved slit on the inner edge of the terminal chamber. Umbilical portion sometimes 

 marked by a solid mass of shell-substance, but this is flush with the surface, and does 

 not project as a stud. 



The best examples of this form have been found in the late Capt. Seabrook's 

 dredgings from the Macassar Straits — 45 fms. Other good examples occur at 

 'Challenger' Stn. 185 (Paine Island, Torres Straits — 155 fms.); smaller but typical 

 specimens at Vavau, in the Friendly Islands (Pacific) — 16 fms. The species is probably 

 widely distributed all over the tropical Pacific and Indian Oceans. 



The specimens illustrated were selected from the Macassar gatherings as being the 

 most typical in our possession, the drawings having been made before the equally 

 good specimens from Stn. 11 had been found. 



Average width -4 mm., height '25 mm. 



394. Truncatulina reticulata (Czjzek). 



Rotalina reticulata Czjzek, 184'8, FWB. p. 145, jjl. xiii. figs. 7-9. 

 Siphonina fimbriata Terrigi, 1880, SGP. p. 212, pi. iv. fig. 69. 

 Truncatulina reticulata Brady, 1884-, FC. p. 669, pi. xcvi. figs. 5-8. 



Chaster, 1892, S. p. 66, pi. i. fig. 16. 



Egger, 1893, FG. p. 402, pi. xvi. figs. 42-44. 



Flint, 1899, RFA. p. 334, pi. ixxviii. fig. 3. 



