n;.\i i'\ 

 11.. i 



Order < >STRA< '< >DA. 



Family I.KI'MKI U 1TI I 



am I.I:I'I:I;MTI \ iion.mit. 



ilMII.I. l-7>. M. in 



. i lui|i- E 



\nn. M.ik- N.u Ili-i , ".Hi 

 -.K-iiiKl KtRKBY, 181 



-'.'. .in, I I- 



i ii, 18M 

 - 



ipace limit- i,r |e convex, oft. Ml large, silbobloi. mnu.ite 1 11 i.llt line, 



with an oblique backward -wing; dor-al edge straight, often angular .it (In- extrem- 

 utr.il outline rounded, -ometimes a little produced at the ini-lillc; ^ivatest 

 tliickin . in tin- vi-ntral lialf. the lower il^ l - u-ually I'l-in^alMi Idiint; val\c~ uiif.|iial. 

 tin- n^'lit tin- larm-r anl overlapping tlic left ; ..\.-rlap cliii-tly ventral, >iinpli-. nr tin- 

 furl ln-r entrance of the ventral eil^e of the left valve i- pre\ent..l l.y two or more 

 |iai'ill.e -et within the overlapping edge of the ri^'ht; hin^o simple. Surface fre- 

 .|iiently horny in api>earan<-e. -.inooth in n -. ^'lanulose or niinub'ly puoctate 



in other-; .1 >mall ttiKerele or "eye-8lK>t" is generally pre.-i-nt on the antero-ilor-al 

 fourth, aii'l a larjze. ronmled -nlicentrally situated -miken iiin^e|e-pot i- seen on the 

 inner side of the valve> ami not iiifr'c|uently li-tin^ni>lialle on the exterior also. 



T\pe; L. lirittnnnii-'i Konanlt. 



An excellent account of tin- ^enn- i> ^iven \>\ I'r. 1 i . Si-hmiilt (lor. <-H.) in his 

 t\\.i paper- on the " IIu->icli-n Siliiriehen I.eper-lit ien." Aeeor-lin^ to I liat author 

 ami to IJoemer. /.. .//-<i//'//v Schrenek (L.tjiynnten Koenirr) attaine.l a length of 4:{ mm. 

 Thi< N the largest species of : :nl prol>alily the lar-e>t known ostracode. 



In most of the -lie length \ai> > mm. ami _'' mm., while inse\ 



other um|iie.>tionally . ric form- the maximum length i- le than I mm. 



a niimi>er of minute forms are referred here l.y I'r-.f. JOB68, my-elf 

 others, of which it is at least doiil.tfnl that they really belong to the genu- I'.. -cause 

 of their -mall -i/e and chietly perhaps l.ecanse of the imperfection of t IP 

 the ventral overlap of the right valve has not I.een estal.li-hed for them. Nor has 

 the "eye-tubercle" and other pecnliarititt of the typical -|..-i-ie- .n them. 



For some at any rate .I/ would otl'er a more natural reception. Finally, 



a number of comparatively .-mall -p.-.-ie- il -\ n--n. to :!.0 mm I which I have here- 



