574 MESSES. E. HEEON-ALLEN AND A. EAELAND ON THE 



suggests the Q. sagra of d'Orbigny (d'O. 1839, FC. p. 188, pi. xi. figs. 16-18), except 

 that in that species the reticulate markings are confined to the broad peripheral ridges 

 of the chambers, the sides being excavated in grooves. 



65. Miliolina parkeri Brady. (PL XLIII. figs. 11, 12.) 



'•■ Quiiiqueloculiiia with oblique ridges," Parker, 1858, MIS. p. 53, pi. v. fig. 10. 

 Miliolina jjarkeri Brady, 1879, etc., IIRC. 1881, p. 46. 



„ Brad'y, 1881, FC. p. 177, pi. vii. fig. 14. 



„ Chapman, 1900, FLF. p. 175. 



„ Chapman, 1902, CKA. p. 231. 



5 Stations. 



Typical specimens of 31. ])arkeri are curiously rare in the material, considering the 

 fact that it is an essentially coral-reef species. True individuals corresponding exactly 

 with Brady's figure occur at Stn, 11 only, weaker specimens at Stns. 6 and 9. At 

 many other Stns. specimens occur intermediate between M. parkeri and the very 

 characteristic form figured by Millett under the name 31. parkeri. This form, so 

 common at Kerimba, is so distinctive and different from the typical M. parkeri that 

 we have separated it under the name M. kerimhatica. Both Millett and Chapman 

 have expressed the opinion that M. parkeri is closely allied to, and is a robust 

 form of M. undosa, but it appears to us more likely that " undosa " is merely a con- 

 dition of growth affecting many different species rather than a true specific form, and 

 that M. parkeri, like other types, is subject to " undose " forms of growth. 



66. Miliolina kerimbatica, sp. n. (Pi. XLIII. figs. 13-23.) 



Miliulina parkeri ^v&Ay ; Millett, 1898, etc., FM. 1898, p. 507, pi. xii. fig. 4. 



13 Stations. 



Test free, quinqueloculine. The walls of the chambers thick, irregularly furrowed 

 in all directions with broad deeply gouged-out channels, running obliquely and 

 irregularly across the face of each chamber and generally connecting with a deeper 

 straight furrow excavated down the peripheral edge. This straight peripheral furrow, 

 when exposed on an earlier chamber in the centre of the test by the quinqueloculine 

 arrangement of the shell, affords a very striking appearance by contrast with the 

 transverse furrows on the surface of the surrounding chambers. Aperture large and 

 furnished with a prominent tooth. The oral end is usually but slightly produced, but 

 in some individuals the aperture is situated on a produced neck. The ridges between 

 the furrows are flat on the top, i. e., the furrows are cleanly gouged out of the shell- 

 substance. 



This rather protean form is one of the dominant features of the material, occurring 

 at nearly every Stn., and at some, no'tably Stns. 3, 9, 11, and 12, in great abundance 

 and attaining a very large size. Hardly any two individuals are alike in detail of 



