430 BULJL,ETIN 100, UNITED STATES NATIONAL MUSEUM. 



species of d'Orbigny's, described in 1826, for recent material of his 

 from the Gulf of Marseilles. I have referred to it in a recent paper 

 (Bull. 71, U. S. Nat. Mus., pt. 6, 1917, p. 53), tropical and subtrop- 

 ical material from the North Pacific, from the Hawaiian Islands, 

 Japan, Hongkong, and Manila Bay. Its surface has a peculiarly 

 individual character, rugose, not from accretions of extraneous mat- 

 ter, but from what seems an eroded character; the test, especially 

 the outer wall, being conspicuously pitted and rugose. This char- 

 acter persists at various ages, and in the whole series of adults from 

 numerous stations, in fact, it is one of the most characteristic species 

 of the Philippine material. Heron-Allen and Earland in their 

 Kerimba paper " refer to this species as related to Q. contorta: 



Almost universally distributed, abundant, and attaining very fine proportions at 



some stations, especially at stations 9, 12, and ?X. There is, as usual, a considerable 



number of specimens passing into M. sclerotica, the essential difference 



§ between these two species being the nature of the superficial test. At 

 station 1 the individuals all closely resemble the figure of Quinque- 

 loculina rugosa given by Fornasini from the "Planches in^dites" (F. 

 1905, Mem. Accad. Sci. Bologna, ser. 6, vol. 2, pi. .3, fig. 13) but they 

 Fig. 24.— Qunj- have a porcellaneous texture, although, like all other specimens of M, 

 QUEi-ocuLiNA coutorta, the surface is matt. The nature of the shell of Q. rugosa 

 d'Orbigny Ea^st remain piu-ely speculative, the species having its origin in a 

 Aperture nomen nudum, the "Planche in^dite" giving practically no guide to 

 AND uNDi- tj^e texture. Schlumberger has identified d'Orbigny's specific name 

 TOOTH OF ''"'^^^^ with specimens from Marseille (M^m. Soc. Zool. p. 68, pi. 4, 

 EARLYSTAGE. (uot 2), figs. 91-93, text figs. 18, 19), which differ considerably from 

 X 150, FROM tiie "Planch^ in^dite" in external characteristics, but which are de- 

 s T A T I ON scribed as ha^^ng a rough surface ("Tdte d'apparence rugose"); they 

 D5164. appear, therefore, to be a form of M. sclerotica. 



However, in the Philippine material Q. contorta occurs at several 

 stations, but in all cases of depths from 200 to 300 fathoms (366 to 

 549 meters) or more, and while it has the matt surface it is never, in 

 this material, to be confused with what I have here called Q. rugosa. 



Moreover, the two are not found together at any station — a fact 

 which seems rather remarkable. Q. rugosa is more at home apparently 

 in shallow water, for it is there that specimens were most abundant 

 and of the largest size. It is not related to Q. sclerotica Karrer, as 

 the rugose character is not due in Q. rugosa to accretion of other 

 material, as in Q. sclerotica, but results from the peculiar character 

 of the original v/all, as already noted. It would seem to be a species 

 characteristic of comparatively shallow warm waters of the Mediter- 

 ranean and Indo-Pacific regions. Wiesner notes the relations of 

 Q. rugosa and Q. contorta in the material from the Adriatic. 



The Philippine records include 16 stations, ranging in depth from 

 18 to 375 fathoms (33 to 686 meters), the average depth being 55 



« Trans. Zool. Soc. London, 1915, vol. 20, p. 576. 



