54 



ft-V>ic— |f!i>.,;rf;'>-f * i ^-S-:»^^ >r -<r> f.uäti: nidu 



icJtr 



146.'"' 'I'licsc ruimbcrs nrc ilcciilcdl}- s^rcntcr tlmn in L. uteris, in uliicl; they 

 arc is,\vcn to he 135 by Cuvicr and V'alcnciiincs,'"' Ii6-r30hy r.üntlicr,''' 125- 

 130 by Siuitt,''' ai;il 123 by Jordan and I'Acniiann ''^ The s;alcs of an oblique 

 row ninniii;^ from the anterior end of tlic tlorsal 

 fin anteriorly and wntrally nnmbcr from 35 to 

 37. Tlie (dicck is covered entirely vvitli scales, 

 of which the number seen.s not to be quite 

 constant, ran^nn;;- from 150 to 250. 'i'lie t;ill 

 cover has scales only in the dorsal ha!,', the 

 remaininc^ part beinr.^ quite naked. Their num- 

 ber ran;.fes from 70 lo 120 The squamation 

 of tlic head, tlius, places the form ver\' near 

 /,, /:/s:us, and separates it from other pikes. 



The branchios',e:,'al rays arc always 13 in 

 number. Dybo'wski '^i\'es them as to be 14''^ 

 vvliich is near the number found in L lucins. in 

 which Cu\'ier anil ("iiinther both slate to be \i, 

 J(M-dan and l'".vern;ann, 14-16, and Smilt, 13-15- 

 The \'ertebrae count 60 in the Siberian specimen 

 and G'^ in one of the Sakiiarin speciir.ens, those 

 of the precaudal re:';ion nu:r.bering 19 in the 

 for;r.cr and 21 in the latter. 



The parietal bones entirely .separate the !--»-•■■•!--•■■>'); mpt, metapteogoid ; 



■ ^ ' ml, opiniic; mx, maxillary; ocl, 



frontals from the supraocci]jital, a marked dif- 



ercnce from the respects in the osteology of 



what ^\■e have hitherto known of the pikes which 



]ia\<' the frontals joining the supraocipital (Fig. 



2). .Three specimens,' which were all tha: were 



I'ii;. 2. Liin'm )\ichtrtii. Upper 

 view 01' the skuH. x 2'3- art, arti- 

 cul:ir ; tU-, denial y ; cpl, mesoptery- 

 goid ; fr, fronlal ; j. jugular (sup- 



iccipital ; ocs, supraoccipital ; op, 

 optrcle : par, parietal ; pmx. inter- 

 maxillary; pol>, preorlntal ; pop, 

 preo;>crcl." ; pr, palatine; ptp, ptery- 

 ijoid : '|ii, quadrate ; Sep. i & 2, 

 supr.aelliinojd ; sop, subopercle: spl, 

 symnUctic; spo, s;)hei;otic; squ, 

 pleroii,. 



1) 1. c, p. 9,=;7- 



2) IIisto:vc naturell.,: des Pciisons, Tome XVIII, 1S46. p. aSfi. 



3) Calaloijue of the l'i*l-.es in the liriiish .Museum. Vol. IT. iSQf. p. 95S. 



4) Skandinaviens Fi^kar, Vol. II, 1S95, P- y9*>- 



5) Kishcs of Xortli and Middle America, i>t. i. 1S9G, p. 62S. 



6) 1. c, p. 957- 



