rOEAMINIFEEA OP THE KERIMBA AECHIPELAGO, 563 



chambers, which in the most advanced cases (especially at Stns. 2 a and 4) are 

 separated from their predecessors by deep sutural clefts. Such specimens may, for 

 purposes of classification, be separated under the name of Terquem's species ; they 

 probably represent a passage-form between M. tricarinata and M. contoria. Karrer's 

 TrilocuUna intermedia (K. 1868, MFKB. p. 138, pi. i. fig. 11) represents this dehiscent 

 form in a less advanced degree, as also does Costa's figure of TrilocuUna decipiens 

 Eeuss (C. 1853, etc., PEN. 1856, pi. xxiv. figs. 13 & 16), which, however, diflfers 

 greatly from the original figure of that species as given by Eeuss (R. 1849-50, FOT. 

 p. 382, pi. iv. (xlix.) fig. 8). 



39. Miliolina tricarinata, var. serrata, nov. (Pi. XLI. figs. 23-25.) 



2 Stations. 



At Stns. 7 and 1 X a few specimens were found of a very beautiful little variety 

 (which we figure), in which the marginal edges of the chambers were furnished with 

 regular serrate processes. They represent a somewhat dehiscent type of M. tricarinata, 

 in which four chambers are exposed round the circumference of the test. Somewhat 

 similar forms are figured by Brady, Parker, & Jones (B, P. & J. 1888, AB. p. 215, 

 pi. xl. fig. 33) under the name M. excisa, and by Millett (M. 1898, etc, FM. 1904, 

 p. 607, pi. xi. fig. 4), but these specimens are quinqueloculine instead of triloculine 

 as are ours. 



Length averages •25-"35 mm., breadth •18-'25 mm. 



40. Miliolina terquemiana Brady. (PL XLI. figs. 26-31.) 



Miliolina terquemiana Brady, 1884, FC. p. 166, pi. cxiv. fig. 1. 



„ tricarinata (striate var.) = il/. terquemiana Millett, 1898, etc., FM. 1898^ p. 503, 



pi. xi. figs. 10, 11. 

 „ ,, var. terquemiana Chapman, 1900, FLF. p. 174. 



„ terquemiana Dakin, 1906, FC. p. 230, pi. figs. 9, 10. 



5 Stations. 



Scantily represented, most abundant at Stn. 1. This is only a sulcate condition 

 of M. tricarinata, and bears the same affinity to that species as does M. insignis to 

 M. trigonula. 



Two forms occur, one a long narrow form with acute marginal periphery recalling 

 the M. funafutiensis of Chapman, the other resembling Brady's figure, but with 

 more inflated chambers, i. e. presenting a general conformation intermediate between 

 M. tricarinata and M. trigonula. 



41. Miliolina bertheliniana Brady. (PL XLI. figs. 32-35.) 



Miliolina bertheliniana Brady, 1884, FC. p. 160, pi. cxiv. fig. 3. 



„ tricarinata (reticulated form) =M. bertheliniana Millett, 1898, etc., FM. 1898, p. 503, 



pi. xi. fig. 12. 

 „ „ var. bertheliniana Chapmau, 1900, FLF. p. 174. 



