two new Genera allied to Loftasia. 177 



tlie presence of the " opaque scarlet spherules," which are as 

 abundant in L. persica as in 8. Theohaldi^ and to be seen in 

 both in the chambers of foraminiferal tests (from which they 

 all originally come) as well as dispersed through the substance 

 of the body generally (figs. 5, a, and 4, 5). I could not 

 specify the kind of test in which they appear in S. Theohaldi, 

 for the fragments are too much broken down for recognition ; 

 but in the microscopic slice of Loftusia persica, about 2 in. 

 long by I in. in diameter, which Mr. H. B. Brady, F.R.S- 

 &c., kindly gave me several years ago, the instances are both 

 clear and numerous, among which I have* marked one for 

 observation of a discoid form in which four or five of the 

 chambers respectively present an opaque scarlet spherule 

 (fig. o), and another, a Textularia^ in which ten of the cham- 

 bers on one side and upwards of the same number on the 

 other each present an opaque scarlet spherule ; so that there 

 can be no doubt whatever that in both 8. Theohaldi and L. 

 persica the opaque scarlet spherules come from the chambers 

 of foraminiferal tests, as above stated, and thus are to be 

 regarded as foreign material in both respectively. And here 

 the difference in size of these scarlet spherules, to which I 

 have already alluded, may be explained, viz. by the spherule 

 when large often presenting the appearance of being com- 

 posed of a great number of much smaller ones of the same 

 kind in a spherical capsule ; so that the scarlet mass, both in 

 the chambers and out of them, may not only when breaking 

 up present an irregular form, but the opaque scarlet body 

 may vary very much in diameter. 



That these scarlet bodies are reproductive particles may be 

 learnt from what Max Schultze described and illustrated in 

 recent species in 1854 and 1857, all of which was summarized 

 and illustrated by Dr. Carpenter in 1862 (" Introduction to 

 the Study of the Foraminifera," Ray Soc. Publ. p. 37 (fee. and 

 pi. xiv.), while all was confirmed by myself, not only in recent 

 but in fossil forms, in 1861 (' Annals,' vol. viii. pp. 318, 325, 

 and 451, pi. xvii. figs. 12 and 13, 14 and 15, and l,o, respec- 

 tively). 



The beautifully infiltrated specimens by which the latter 

 was confirmed I have still by me, for at the time they were 

 obtained, now thirty-six years ago, I ground down their 

 surfaces, covered them with balsam, and attached them 

 to glass slips, through which their minute structure, from 

 its brilliant colours and clear definition, can even now be 

 seen not only as well as ever, from its imperishable nature, 

 but more satisfactorily than in the recent specimen, the shell- 

 structure remaining pure opaque white, the tubular structure 



