OF THE NATICULE^. 



893 



roimded ends, a longitudinal median 

 fascia of lines, and a narrow pinnulated 

 horder. =Diplo?ieis? hi/alina, EB. p. 362. 

 Marine. India. May be more akin to 

 CymatopJeura Solea. 



N. hinodis (E.). — Smooth, minute, 

 narrow panduriform, -vsdth acuminated 

 rostrate apices ; median nodule very 

 distinct. EB. 1840, p. 18 ; KB. p. 100, pi. 3. 

 f. So. = Frar/{hinaf binodis, EA. p. 127. 

 Fossil, Santa Fiore ; recent in pools, &c. 



N. dupUcata (E.). — Smooth, small, 

 rather broad panduriform, with attenu- 

 ate subacute apices. EM. pi. 21. f. 35. 

 Cuba. In Ehrenberg's hg-ure the ends 

 are somew' 

 line simple. 



N. incurva (Greg.). — Small, smooth, 

 sublinear, with a shallow sinus on each 

 side, and ends suddenly contracted into 

 obtuse subcapitate beaks. MJ. iv. p. 8, 

 pi. 1. I 2Q. Scotland. 



N. comtricta, EM. pi. 38. 17. f. 3. 

 Volcanic ashes, Iceland. Ehrenberg re- 

 presents it as smooth, minute, panduri- 

 form ; ends rounded, each terminated by 

 a minute nipple-like point ; median line 

 simple. 



N. emarglnata, EM. pi. 39. f. 83. 

 Ehrenberg's figure is minute, smooth, 

 panduriform, with each end suddenly 

 contracted into an obtuse, broad, mam- 

 miform beak. 



N. paradoxa (E.). — Large, smooth; 

 oblong, slightly constricted at the middle, 

 with four longitudinal median lines and 

 somewhat obtuse cuneate ends. EA. 

 pi. 1. 3. f. 4. 6. Peru. 



N. imperialis (E., K.). — Dilated, with 

 constricted middle and subacute apices, 

 a simple series of conspicuous granules 

 accompanying the middle furrow, which 

 is smooth on both sides: lateral series 

 alike, two perfect ones inclosing an im- 

 perfect median sinus, all interrupted at 

 the middle. = Diploneis imperialis, EB. 

 1845, p. 362. Marine. India. Granules 

 large, pearl-like. 



N. Entomon (E.). — Large ; slightly 

 sinuato-constricted at the middle, with 

 oblong lobes and subacute cimeate ends ; 

 sti-ife 19 or 20 in 1-1200". EB. 1840. 

 = Pinmdaria Entomon, EA. pi. 1. 1. f. 3, 4 ; 

 Diploneis Entomon, EM. pi. 19. f. 30. 

 Marine. Fossil, Greece ; recent, Eu- 

 rope, Asia, Africa. Distinguished by 

 its shallow stricture and smooth striae. 



N. Conops (E., K.). — Small, panduri- 

 form, very finely striated, ^ath cordate 

 lobes and acute apiculate apices. =P«;i- 

 nularia? Conops, EA. pi. 3. 7. f. 20. 

 America. 



N. incurvata (Greg.).— Pandui-ifonn, 

 with roimded ends; stiiee 30 in -001", 

 minutely moniliform ; median line 

 straight, with dark shaded lines on each 

 side. TM. iv. p. 44, pi. 5. f. 13. Marine. 

 Scotland. 



N. splendida (Greg.). — Large, pan- 

 duriform, much constricted, with elliptic- 

 oblong lobes and obtusely triangular 

 ends ; strise distinctly moniliform. TM. 

 iv. p. 44, pi. 5. f 14.^ Marine. Scotland. 

 31edian line straight, and having on each 

 side a narrow blank space. 



N. Proserpincs (E.). — Veiy large, 

 deeply constricted ; lobes almost rhom- 

 boid, with subacute apices ; sides stri- 

 ated, lines decussating at a right angle, 

 a broad, pellucid, smooth median fascia 

 divided by two lines into three parts ; 

 umbilicus circular. = Diploneis Proser- 

 jnnce, EB. 1858, p. 13. Marine. ^F^gean 

 Sea. 



N. Musca (Greg.). — Small, panduri- 

 form, vr[\h tiu-gid lobes and acute cune- 

 ate apices ; strine rather distant, coarse, 

 moniliform, short, forming a marginal 

 band. GDC. p. 7, pi. 1. f. 6. Marine. 

 Scotland. Striae 18 in -001"; median 

 line and nodule distinct. 



N. Bomhus (E., K.). — Panduriform, 

 with subcordate lobes and subacute 

 apices ; striae dense, coarselv moniliform. 

 KSA. p. 83. = Pinmdaria Bomhus, ERBA. 

 1844; GD.pl. 1. f. 12; Diploneis Bomhus, 

 EM. pi. 19. f 31. Europe. 1-384" ; strise 

 21 in 1-1200". Granules of the largest 

 striae in fom*s. Median line broad, with 

 a square central nodule. Characterized 

 by its short turgid lobes and close, large, 

 pearly gi-anules. 



N. didijma (E., K.). — Rather broad, 

 slightly constricted at the middle, with 

 short suborbicular lobes and broadly 

 rounded ends ; striae distinct, gi*anulate. 

 KB. p. 100, pi. 4. £ 7 ; SD. i. pi. 17. f. 154. 

 — Pinmdaria didijma, EA. pi. 2. 4. f.-3. 

 Marine. Europe, Asia, Africa, America. 

 {ytl. 61; XV. 12.) 



N. dissimilis (Rab.). — Large, pan- 

 duriform, with broadly rounded ends ; 

 striae stout, curved, converging, not 

 reaching the median line ; front view 

 gibbous at the centre and tapering to- 

 wards the ends, which are trimcate.= 

 Pinnuhria dissimilis, Rab. p. 45, pi. 6. 

 f. 32. Persia. 



l>i. Pandu7'a (Breb.). — Large, elong- 

 ated panduriform, with elliptic lobes 

 and obtuse apices ; costae smooth. BD. 

 pi. 15. f. 4:. = Pinmdaria Pandura, GDC. 

 p. 17, pi. 1. f. 22 ; K nitida, TM. iv. 

 p. 44, pi. 5. f 12. Europe. M. de Br^- 



