OF XnE NAVICULE^. 



901 



N. leptocephala (Rab.). — Small, lance- 

 olate, with eloug-ated, slender, obtuse, 

 somewhat clavate beaks ; striae wanting- 

 or indistinct. Eab D. p. 39, pi. 6. f. 69. 

 Em-ope. 



N. exiUs (K.). — Very minute, smooth, 

 lanceolate, wdth produced, obtuse apices. 

 KB. p. 95, pi. 4. f. 6. Germany. 



N. rostrata (E.). — Finely punctated, 

 broadly lanceolate, almost rhomboid, 

 rapidly tapering into acute beaks ; cen- 

 tral nodule large. EB. 1840, p. 18 ; KB. 

 p. 94, pi. 3. f. 45. Fossil. Santa Fiore. 

 1-216". Front \dew linear, with trim- 

 cate apices. 



N. Charontls (E.). — Elongated, smooth, 

 oblong-lanceolate, with the ends con- 

 tracted into conic beaks. EB. 184-5, 

 p. 239 ; EM. pi. 35. bb. f. 12. Fom- times 

 as long as broad. 



N. Otrantina (Rab.). — Oblong-lance- 

 olate, with rounded, slightly contracted 

 ends. Rab D. p. 44, pl."'6. f. 42. 



N. dirhynchus (E.). — Small, narrow- 

 lanceolate, vnXh. conic, rostrate apices ; 

 strite wanting or indistinct. EA. p. 130, 

 pi. 3. 1. f. 11. Falaise, Mexico. 



N. Garganica (Rab.). — Minute, lan- 

 ceolate, suddenly contracted into short, 

 thick, obtuse apices ; striae distinct, ob- 

 lique, reaching the median line, six near 

 the central nodide stouter than the rest. 

 =Pinmdaria Garganica, Rab D. p. 44, 

 pi. 6. f. 41. Italy. ^ 



N. amphiceros (K.). — Minute, broadly 

 lanceolate, with produced, rostrate apices, 

 and fine striae. KB. p. 95, pi. 3. f. 39. 

 Germany, Asia. 



^.stelligera (E., K.). — Rhomboid-lan- 

 ceolate, with the apices suddenly atte- 

 nuated into obtuse beaks ; the very fine 

 punctated pinnules distinctly radiating 

 from the orbicular, smooth umbilical 

 space. KA. p. 70. =Puinulanasfenigera, 

 EB. 1845, p. 364. Marine. India.' 



N. Petersii (E., K.) — Dilated, large at 

 each end, suddenly attenuated into a very 

 short beak j median line double, with a 

 naiTow, longitudinal umbilical space ; 

 pinnules very fine. KA. p. 70. =Pi?mu- 

 laria Petersii, EB. 1845, p. 304. Mouth 

 of the river Tagus. 



N. guttulifera (Rab.). — Minute, slen- 

 der, acicular, with a glass-like globe at 

 each apex. RD. p. 40, pi. 6. f. 74. South 

 Persia. 



N. pachycephala (Rab.). — Minute, 

 slender-lanceolate, constricted beneath 

 the capitate apices ; striae converging ; 

 central nodule stout, teiiuinal ones ob- 

 solete. = Pinmdaria pacliycepliala, RD. 

 p. 43, pi. 6. f. 40. Italy. 



N. cincta. = Pinmdaria cincta, EM. 

 pi. 10. 2. f. 6. Bohemia. This species 

 is figured as minute, lanceolate, yvith. 

 obtuse apices ; striee oblique, those oppo- 

 site the centi-al nodule radiant and stouter 

 than the others. 



_ N. Gregorii (Ralfs). — Small, narrow 

 linear-lanceolate, contracted at the ends 

 into miuute beaks ; stride distant, parallel, 

 scarcely reaching the median line. = 

 Pinmdaria apiculata, Greg. MJ. iii. p. 41, 

 pi. 4. f. 21.' Scotland. 



N. angustata (S.). — Minute, narrow- 

 lanceolate, constricted beneath the capi- 

 tate apices ; stiiae indistinct, 45 in -001". 

 SD. i. p. 52, pi. 17. f. 156. =iy dicephala /3, 

 KA. p. 76? Britain, Falaise. Front 

 view narrow-linear. 



N. cryptocephala (K.). — Very minute, 

 lanceolate, with globose, capitate apices ; 

 striae wanting or indistinct. KB. p. 95, 

 pi. 3. £ 20. Europe. 



N. Veneta (K.). — Very minute, lan- 

 ceolate, nither broad, with produced, 

 slightly obtuse apices; striae wanting 

 or indistinct. KB. p. 95, pi. 30. f. 76. 

 Brackish water, Venice. Resembles N. 

 cryptocephala, but is shorter and broader. 



N. Fusidium (E.). — Narrow-lanceo- 

 late, distinctly but slightly constricted 

 beneath the capitate apices. EM. pi. 5. 3. 

 f. 4. America, Asia. 



N. Jeptostylus (E.). — Lateral view 

 tm-gid-lanceolate, suddenly tapering into 

 short beaks "udth capitate apices. = N. 

 Platalea, EM. pi. 15 a. f. 42. 



N, cmiphirrhina (F,.) = Pinnulana am- 

 phirrhina, EM. pi. 15 a. f. 20. Lough 

 Mom-ne deposit, Japan, America. Ehr- 

 enberg figm-es this species as inflated- 

 lanceolate, rapidly tapering into subacute 

 beaks ; striae parallel. 



1^. amjyhirhynchus (E.). — Small; tm'- 

 gid-lanceolate, suddenly constricted at 

 the ends into short, subcapitate beaks; 

 striae indistinct or wanting, EA. pi. 3. 1. 

 f. 10 ; KA. p. 76. Em-ope, Asia, Aus- 

 ti-alia, Africa, America, (xn. 6.) 



N. amjyhistylus (E., K.). — Elongated 

 bacillar, with tiu'gid middle, attenu- 

 ated, filiform, obtuse apices, and deli- 

 cate pinnules. KSA. p. 7 o.= Pinmdaria 

 amphistyhis, EB. 1845, p. 79. Fossil. 

 Oregon. 1-372". 



N. ordinata (Breb.). — Minute, smooth, 

 connected in a parallel manner into 

 short, fragile filaments ; valves slender- 

 lanceolate, conti'acted at the ends into 

 short, often capitate beaks. Breb. = iV. 

 aponina /3, ELA. p. 69. Falaise. 



N. euryccphala (Rab.). — Large, ro- 

 bust, oblong, slightly contracted at the 



