546 MESSES. E. HEEOX-ALLEN AND A. EAELAND ON THE 



yielded, on examination for purposes of comparison, practically all the distinctive 

 forms of the Kerimba dredgings, among which we may call attention to the following : — 



BilucuUna ringens, var. striolata Br. 



Spiroluculina crenata Karrer. 



Miliolina durrandii Millett. 



Miliolina rupertiana Rr. 



Articulina conico-articulata (Batsch). 



TextiUai'ia foliacea, sp. n. 



Bijarina mackinnonii, Millett. 



Pavonina flabelliforinis d'Orb. 



Bulimina eleyantissima, var. compressa 



Millett. 

 Bolivina limbata Br. (costate forms). 

 Bolivina simpsoni, sp. n. 



Sagrina tessellata Br. 



Sagrina striata Br. 



Discorbina reniformif:, sp. n. 



Discorbina pidvinata Br. 



Discorbina valvulata, var. granulosa, var. n. 



Truncatulina glabra, sp. n. 



Truncatulina rnstrata Br. 



Rotalia venusta Br. 



Rutalia murrayi, sp. n. 



Rotalia erinacea, sp. n. 



Nonionina boueana d'Orb. 



Polystomella milletti, sp. n. 



We may perhaps be permitted to call attention to the mystery surrounding the 

 curious form recorded by d'Orbigny from Mauritius as Rotalia duhia (TMC. p. 274. 

 no. 34) which now comes to light again after a period of ninety years. In this 

 respect its history is perhaps even more romantic than that of Pavonina flabelliforinis 

 (No. 181). 



When we first discovered the specimens at Stn. 11 we were unable to assign them 

 to any definite position, although their rhizopodal nature was unquestionable. Sub- 

 sequent research caused us to associate the forms with Fornasini's published figure, 

 representing d'Orbigny's original sketch of a form to which he gave this name in the 

 ' Tableau Methodique ' (d'O. 1826, TMC. p. 274. no. 34). Fornasini's opinion was that 

 the rhizopodal nature of d'Orbigny's organism was more than doubtful, his opinion, 

 however, being based entirely upon Berthelin's tracing of d'Orbigny's original sketch. 

 We thereupon proceeded to verify Fornasini's figure (F. 1908 SON. p. 46, pi. i. fig. 14), 

 and to compare our specimens with the original type-specimen in Paris, and we had 

 no hesitation in deciding that the two forms were identical, although d'Orbigny's 

 species is only represented by a single water-worn individual, whereas the Kerimba 

 dredgings have famished us with two or three distinct stages of growth. We have 

 now also identified specimens of the organism from Cebu, Philippine Is. (45 fms.), and 

 the Java Sea (50 fms.), so that it would appear to be widely distributed. The exact 

 affinities of the form are, however, still very obscure, and, pending further investigation 

 and the discovery of further specimens, we merely record it under d'Orbigny's original 

 name in our Table of Species and Varieties. It will almost certainly require the 

 establishment of a new genus. 



We have also taken the opportunity afforded us by the generous invitation and 

 encouragement of the Publication Committee of the Zoological Society, and the 

 profusion of the species and varieties of the genus Peneroplis, to coordinate the earliest 



