34 BCLLETIN : MUSEUM OF COMPAKATITE ZOOLOGY. 



cus) ■ a form from the Eifel Devoniau, described below ^Dpelmenm; 



phlrm Trantschold; AsUrolepis Memica Barra^de (herema ter 



2 Xd a D. Men.!cus); DiuiM.,.: and lastly, the genus T,ian- 

 ■1/ 'wh h is so closely allied to DinicHhy. as to pass for a mutat.on 



ifSification of the same. TUa.icU,.y. is, e-otial.j^ a uge ^».,c^ 

 thm with iK'hter bones and a degenerate dentition. I .s presuraable 

 tt hel°the osteology of BrontiMys G.ryonicM,s M^^o^-^ 

 Tr„cko.teus, and related genera, shall ha>-e "--« X™-/ '"^J^'^; ^^ 

 DmicMys. their affinities with one another w,ll be fo™^ '»'';" "* 

 closer than with the more primitive Coccoste.ds. ^ewbeny was m 

 U::dto regard these forms as constituting a distinct f-'y; '"jf ^ 

 nichlhyid^; bnt that wonld rather overreach the mark. \\ «^™'"'= '° 

 adopt the middle conrse, and assign to the forms enumerated above the 

 rank of a subfamily, known as the DimM.yum. 



As already remarked, we may regard the presence of a cannal process 

 as s^ffldent^gronnd for referring detached dorso-median pla es o th 

 Dinichthyin., instead of the Cocco.,e,d^ in general J"; J"™;". 



ace aUspIcies fonnde'd upon such dorsal shields for J^e -e being a 



D. trautscholdi, D. pehnensis, and D. pustidosus. 



Dinichthys livonicus nomen nov. 



T • lonri r H Pander. Ueber die Placodermen des devon- 

 Coccosteus aus Livland, C ±l. ranuer, 



cr:r:S'T;:.sc™;H ^.'erlceosteas „,e.a.op.er.., etc. .Zei.sohr. 



^-«f •r'-''"ct'Ila"ote""'"- on the Dor».. Shields 

 Dlnichthys hvomcus, C. K. basiman v^ 



in the Dinichthyids (Amer. Geol., Vol. XVni. p. -22). 



• • w P...1pr', Plite B, Fie. 4, of his Placodermen des devonischen 



The original of Pander s Plate a, i^i. ^^ ^^g^^^. 



Systems, may he taken as the tjT>e of thi^ specie and J g^.,^ 



ah^ly associated .ith_itthe^sp.^^^^^^ H. p. .93. 



^^.^ ^;;^:2;::tLe of th^ ;^f -;;2::t:^;= 



1857. 

 1889. 

 1896. 



