LAMPERN. 
1189 
Hist. Pise., p. 104, tab. G. 2, fig. 1 (4- Lamp, media, 
p. 106, tab. G. 3, fig. 2 + Lamp, cceca Baltneri , p. 107, 
lab. G. 3, fig. 1). Petromyzon unico ordine denticulorum 
minimorum in limbo oris, prseter inferiores majores ■+• Petrorn. 
corpore annuloso, appendicibus utrinque duabus in margine 
oris, Art., Ichtliyol., Gen. Pise., p. 64; Syu. Pise., pp. 
89 et 90; Spec. Pise., p. 99. Petromyzon pinna dorsali 
secunda angulata (Stiecis Neinoga, Westrobothniensibus Natting) 
+ Petr, pinna dorsali seennda lineari, labio oris snperiore 
pone lobato, Lin., Fna Suec., ed. I, p. 102. Lesser Lam- 
prey, Penn., Brit. Zool. (ed. 1776), vol. Ill, p. 70, tab. 
VIII, No. 28 + Pride, p. 71, tab. VIII, No. 29. 
A : forma major, pinnis dorsalibus minoribns, remotis. 
Petromyzon fluviatilis , Lin., Syst. Nat., ed. X, tom. I, p. 
230; Bl., Fisch. Deutschl., part. Ill, p. 41, tab. LXXVIII, 
fig. 1; Retz., Fna Suec. Lin., p. 303; Swartz, Svensk 
Zoologi, H. 6, No. 33; Pall., Zoogr. Boss. Asiat., tom. Ill, 
p. 66; Cuv., Regn. Anim., ed. I, tom. II, p. 118; Nilss., 
Prodr. Ichtliyol. Scand., p. 122; Ekstr., Vet. Akad. Hand]. 
1834, p. 70; Yarr., Brit. Fish., ed. 1, vol. II, p. 454; 
Kb., Damn. Fisk., vol. Ill, p. 1042; Nilss., Slcand. Fna, 
Fisk., p. 745; Hckl, Kn., Siisswasserf. Ostr. Mon., p. 
377; Sieb., Siisswasserf. Mitteleur., p. 372; Malm, Gbgs 
Vet., Vitt. Samh. Handl., Ny Tidsf.. VIII, p. 88; Mgrn, 
Finl. Fiskfna (disp. Helsingf. 1863), p. 72; v. Bemm. in 
Herklots, Bouwst. Fna Nederl., part. Ill, p. 392; Blanch., 
Poiss. d. eaux donees Fr., p. 515; Canestr., Arch. Zool., 
Auat., Fisiol., vol. IV, p. 185; Fna Ital., Peso., p. 31; 
Gthr, Cat. Brit. Mus., Fish., vol. VIII, p. 502; Coll., 
Forh. Vid. Selsk. Chrnia 1874, Tillfeggsb., p. 219; 1 879, 
No. 1, p. 107; N. Mag. Naturv. Chrnia, Bd 29 (1884), 
p. 122; Ltkn, Arct. Man. (Rupert Jones, 1875), p. 122; 
Malm, Gbgs, Boh. Fna, p. 632; Fedders., Naturh. Tidskr. 
Kbhvn, ser. 3, vol. XII, p. 94; Mor., Hist. Nat. Poiss. Fr., 
tom. Ill, p. 604; Bncke, Fisch., Fischer., Fiscliz. O., JV. 
Preuss., p. 196; Mela, Vert. Fenn., p 370, tab. X; Day, 
Fish. Gt. Brit., Irel, vol. II. p. 359, tab. CLXXIX, fig. 1 ; 
M6b., Hcke, Fisch. Osts., p. 161; Fatjo, Fne Vert. Suisse , 
vol. V, part. II, p. 512; Lillj., Sv., Norg. Fna, Fisk., 
vol. Ill, p. 693; L6nnb., Bib. Vet. Akad. Handl., Bd 18, 
Afd. IV, No. 2. 
Petromyzon argenteus , Bl., Ausl. Fisch., part. IX, p. 74, tab. 
CCCOXV, fig. 2; Bl., Schn., Syst. Ichtliyol., p. 532, tab. 
102, fig. 1; Couch, Fish. Brit. Isl., vol. IV, p. 400. 
Petromyzon pricka (ex Daubenton, Encycl. Meth.), Lacep., Hist. 
Nat. Poiss., tom. I, p. 18. 
Petromyzon Omalii, V. Ben., Bull. Acad. Sc. Belg., ser. 2, tom. 
II (1857), p. 549 cum tab. ad p. 554; tom. XX (1865), 
p. 46; Malm, 11. cc. 
? Petromyzon plumbeus , Ayres, Proc. Calif. Acad. Nat. Sc. 1855, 
p. 27. Petr, ayresii, Gthr, 1. c., p. 505. Ammoccetes 
cibarius, Jord., Ford., Ann. N. Y. Acad. Sc., vol. Ill (1885), 
p. 292. 
B: forma minor, pinnis dorsalibus altioribus, approximatis. 
Petromyzon Planeri, Bl., Fisch. Deutschl., part. Ill, p. 47, 
tab. LXXVIII, fig. 3 (dub.); Lacep., 1. c., p. 30 (+ Petr, 
sanguisuga, tom. II, p. 101, tab. I, fig. 3 + Petr, sept- 
oeil + Petr, niger, tom. IV, p. 667, tab. 15); Osb., Vet. 
Akad. Handl. 1804, p. 181; Swartz, 1. c.; Cuv., 1. c., p. 
119; Nilss., Prodr., 1. c. ; Yarr., 1. c., p. 457; Kr., 1. c., 
p. 1052; Nilss., Fna, 1. c., p. 747; Kessl., Bull. Soc. 
Natur. Moscou, 1856, p. 390; A. Mull., Miill. Arcliiv 
1856, p. 325; Hckl, Kn., 1. c., p. 380; Sieb., 1. c., p. 
375; Malm, Gbgs Handl., 1. c., p. 92; Mgrn, 1. c., p. 
73; Blanch., 1. c., p. 517; Canestr., Arch., 1. c., p. 186; 
Fna, 1. c.; Langerh., Ber. Verh. Naturf. Ges. Freib. i. B., 
Bd VI (1873), H. 3; Fedders., 1. c., p. 95; Mor., 1. c., 
I>. 606; Bncke, 1. c., p. 197; Fatio, 1. c., p. 499; Lillj., 
1. c., p. 708. 
Petromyzon plumbeus (= P. septoeil, Lacep.) + Petromyzon 
bicolor (= P. niger, Lacep.), Siiaw, Gen. Zool., vol. V, p. 
263. 
Petromyzon branchialis ( + larva), Gthr, 1. c., p. 504 ; Coll., 
Forh. 1. c. 1874, Tillasgsh., p. 220; ibid., 1879, p. 107; 
Malm, Fna, p. 636; Mela, 1. c., p. 371, tab. X; Day, 
1. c., p. 362, tab. CLXXIX, figs. 2 (larva) et 3; Jord., 
Ford. ( Ammoccetes ), 1. c., p. 293. 
C: forma larvalis. 
Petromyzon branchialis, Lin., Syst., 1. c. ; Hi.., Fisch. Deutschl., 
1. c., p. 45, tab. LXXVIII, fig. 2; Swartz, 1. c.; Dum. 
(Ammocoetus), Dissert. Poiss. Cyclost. 1808; Cuv. ( Ammo - 
coetes ), 1. c., p. 120; Nilss. ( Petromyzon , subg. Ammo- 
ccetes), Proclr., p. 123; Yarr. ( Ammoccetes ), 1. c., p. 459; 
Kr., 1. c., p. 1060; Nilss., Fna, 1. c., p. 748; Hckl, Kn., 
1. c., p. 382; Cederstr., Ofvers. Vet. Akad. Forh. 1861, 
p. 91. 
Petromyzon ruber, Lacep., 1. c , tom. II, p. 100, tab. I, fig. 2. 
Petromyzon Unnbricalis, Pall., 1. c., p. 69. 
Acln. Ammocoetes aureus (Bean, Proc. U. S. Nat. Mus. 1881, 
p. 159; Br. -Goode, Fish., Fish. Industr. U. S., Sect. I, 
tab. 251), ex Alaska, Petrorn. fluviatilis simillimus videtur. 
Caput (fide descriptionis) perparvum, !l Vmon longitudinis cor- 
poris 1. 187 / ln00 distantife inter apicem rostri et originem pinme 
dorsalis primse, quod numquam in nostra specie vidi. Figura 
tamen citata has rationes non confirmat. 
The Lampern attains in Scandinavia a length of 
at least 4 x / 4 din. In Germany and France it is said 
sometimes to measure 5 dm. In this respect, however, 
there is great difference between the Larnperns of dif- 
ferent tracts within the same country, this species too, 
in its full development, being an anadromous fish, and 
requiring the bounteous resources and saltness of the 
sea, or at least of brackish water, to attain its most 
typical size and form. How variable the anadromous 
fishes are in this respect, we have seen most distinctly 
in the Salmons; but the Sea Lamprey here affords a 
comparison at closer quarters. Where the Lampern 
lives in brooks and other small collections of fresh 
water, it usually appears as a smaller form, about 2 
dm. long. The same differences may be observed in 
the size of the larvae. Sometimes the metamorphosis 
from Ammoccetes to Petromyzon takes place at a length 
of 1 din., sometimes larvae are met with at least 1 ' 2 
