300 Messrs. W. K. Parker and T. Rupert Jones on some 



In the Norway dredgings the common Biloculince (such as 

 figs. 28, 29, 31) are numerous from 30 fathoms, and amongst 

 them there were two distorted specimens (such as fig. 30) ; three 

 specimens of similar smooth Biloculince, but larger in size, came 

 from the 70—100 faths. dredging; aiid three specimens of the 

 globular and striate variety (figs. 32, 33) occurred at 160 faths. 



25. Quinqueloculina Seminulum, Linn. sp. PI. X. figs. 34, 35, 36. 



Serpula Seminulum, Linn. Syst. Nat. ed. 12. p. 1264. 

 Vermiculum intortum, Montagu & Fleming. 



Quinqueloculina Seminulum, D'Orb. Ann. Sc. N. vii. p. 303. no. 44. 

 Quinqueloculina secans, D'Orb. ib. p. 303. no. 43 ; Moileles, no. 96. 



Triloculina ? oblonga, Montagu, sp. PI. X. fig. 37. 



Vermiculum ohlongum, Montagu, Test. Bi'it. p. 522. pi. 14. f. 5 ; Fleming, 



Weni. Mem. iv. p. 565. pi. 15. f. 4. 

 Triloculina oblonga, D'Orb. Ann. Sc. Nat. vii. p. 300. no. 16 ; Modeles,no, 95. 



Shell more or less oval or ovate, and compressed ; resembling 

 Biloculina in the whiteness and opacity of its substance, and in 

 its mode of building-up, except that the chambers are not set on 

 regularly on one plane, nor overlap so completely at their edges ; 

 the chambers not being expanded, as is usual in Biloculina, but 

 narrow and crescentic; and the overlap of their edges being 

 greater on one side than on the other. This asymmetry gives 

 rise to the exposure of parts of either the edges or faces of the 

 earlier chambers on the two surfaces of the shell ; and generally 

 one more chamber is visible on one surface than on the other ; — 

 as many as six or five on one, and five or four on the other {Quin- 

 queloculina), or as few as three and two (Triloculina). 



The aperture is semioval, with a tongue-like internal lobe, 

 which is frequently bifurcate. 



Quingue- and Tri-loculina are excessively variable shells*, both 

 as to shape and ornament, and are amongst the most common 

 Foraminifers in all latitudes and depths. 



We have no genuine Triloculina in the Norway dredgings. 

 Fig. 37 is the so-called Triloculina ohlonga of authors ; but it is 

 rather a contracted ill-grown Quinqueloculina than a true Tri- 

 loculina. It usually abounds with the Q. Seminulum. 



The Miliolce were as common in the Tertiary seas as at pre- 

 sent ; they appear to be rare in the Chalk ; but are not unfre- 

 quent (as Quinqueloculina), though of small size, in the Gault. 

 Various individuals are common in one or other of the Norway 

 dredgings. Fig. 34 is from 30 fathoms ; figs. 35 & 36 from 



* The plates 16-20 of the 'For. Foss. Bass. Vienne' offer a large series 

 of Milioline forms for study. 



