KONOL. SV. VKT. AKADEMTRNS HANDLINCiAK. RANI) 27. N:() 3. 63 



Var. Coiiperi Bail. (1850). — V. slightly constricted in tho middle. — Pinnul. (Jouperi 

 Bail. Smiths Contr. II p. 39 PI. II f. o3. 



Marine: Florida (Bail.). 



Var. Kittoniana A. S. (1874). — V. l)roadly lanceolate. L. 0,07:. to 0,ir, ; B. 0,(.4 to 0,08 

 mm. Strite 7,.'j to 10, puncta 10 to 15 in 0,oi mm. — N. Kitfoniana A. S. Atl. II f. 10. 



Marine: Brazil (Deby Coll.)! Porto Segnro (Deby (!oll.)! (Jolon (Deby Coll.)! Pensacola! 

 Campeaohy Bay! Sierra Leone (Deby Coll.)! Red Sea! C^eylon (Lend. Fortm.), Seychelles (Van 

 Heurck Coll.)! Mauritius (Deby Coll.)! 



81. N. tiirgidula Pant. (1893). — V. broadly elliptical with rounded ends. L. 0,o4 7; 

 B. 0,03.3 mm. Lateral areas narrow, broader in the middle and convergent at the ends. Stri* 

 13 in 0,01 mm. coarsely punctate. — Pant. Ill Pl. XXXII f. 4(r2. 



Marine: Hungary, fo-ssil (Pant.). 



32. N. Lyra Ehb. (1843). — V. elliptical with rounded or rostrate ends. L. 0,o!s to 0,i8; 

 B. 0,o2f. to 0,06 mm. Lateral areas narrow, linear, con.stricted in the middle, or not, divergent at 

 the ends or not. Striae 6 to 14; puncta 7 to 18 in 0,01 mm. 



Var. cUiptica A. S. (1874). — V. elliptical, with rounded to subrostrate ends, or subhexa- 

 gonal. L. 0,12 to 0,1 8 ; B. 0,04 to 0,06 mm. Lateral areas linear, convergent towards the ends. 

 Striee 6 to 7, puncta 7 to 11 in 0,oi mm. — N. S. D. PI. I f. 39. Atl. II f. 29. V. H. Syn. X 

 f. 2. Janisch Gazelle Exp. XV f. 23. 



Marine: North Sea! Mediterranean Sea! Red Sea! Ceylon! Madagascar! Seychelles (Van 

 Heurck Coll.)! Sumatra (Deby Coll.)! Philippines! Singapore! Fossil: Moravian Tegel! 



Forma hullata Norm. (1861). — L. 0,i3 to 0,i6; B. 0,o6 to 0,07 mm. Areas with a row of 

 large puncta. Striffi 6, puncta 11 in 0,oi mm. — JSf. hullata Norm. T. M. S. 1861 p. 8 PI. II f. 7. 

 A. S. Atl. Ill f. 8—9. 



Marine: C'eylon (Letonrneur Coll.)! Macassar Straits ((rrove Coll.)! Japan (Atl.), Australia 

 (Norm.), Samoa (Atl.). 



Var. Ehrenbergii Cl. — V. elliptical, with rostrate ends. L. 0,0.5 to 0,i6.t; B. 0,o26 to 

 0,0.54 mm. Lateral areas constricted in the middle, with divergent ends. Striae 9 to 12, puncta 

 16 to 21 in 0,01 mm. — N. Lyra Ehb. Am. I: i f. 9 a. Grkg. D. of Clyde PI. IX f. 13 h. Jan. 

 Rabh. Honduras D. Ill f. 7. Janisch Guano PI. I A f. 2&. Donk. B. D. p. 14 PI. II f. 7. 

 A. S. Atl. II f. 11, 16, 2.5. V. H. Syn. p. 93 PI. X f. 1. Janisch Gazelle Exp. XV f. 13. N. Gre- 

 goryana Grey. M. J. V. p. 10 PI. Ill f. 7 (1857). 



Marine: North Sea! Mediterranean Sea! Red Sea! Madagascar! China! Japan! Sumatra! 

 Au.stralia! Samoa! Galapagos Islands! Honduras (Jan. Rabh.). Brazil! Florida! New Yoi*k! Fossil: 

 Baltchik! 



Var. dilatato, A. S. (1874). — V. elliptical, rostrate. L. 0,08; B. 0,044. Latei^al areas 

 slightly convergent. Strift 11, puncta about 14 in 0,oi mm. — Atl. II f. 26. 



Marine: Gulf of Mexico (Atl.). 



Var. (hnudata Grun. Ms. — V. elliptic-lanceolate. L. 0,i; B. 0,045 to 0,o5 mm. Lateral 

 areas as in the var. Ehrenbergii, but dilated as they reach the margins of the valve. Strise 10, 

 puncta 17 in 0,oi mm. 



Marine: S:ta Monica, Calif, fossil! 



Var. atlantiea A. S. (1874). — V. elliptical, with parallel margins and cuneate ends. L. 0,o6 

 to 0,1; B. 0,026 to 0,032 mm. Lateral ai'eas not reaching to the margins of the valve. Striae 9 

 to 11 in 0,01 mm. Puncta very close. — N. S. 1). I f. 34. Atl. II f. 33? N. (Jouperi Atl. II 

 f. 12? N. Lyra dilataia perimtiiUa Pant. 1 p. 27 PI. XVII f. 150. N. Lyra var. clUptira A. S. 

 N. S. D. PI. i f. 35, 38. 



Marine: North Sea! Hungary, fossil (Pant.). 



This var. graduates into A', rnmicrfrns Grun. 



