

ON THE FOSWI- PIIYI.LOPODA OF TIIK rAI.KOZOIC ROCKS. 



75 



[Two otlier Reports road in Section B, having been unavoidably delayed, 

 will be found immediately before the Papers printed in exletisn.'] 



Second Report of the Committee, conslsfiiifj of 'Mr, R. ETn'<:Rin(iK, 

 Dr. H. Woo! -Mil), and Professor T. Ri TEiiT Jones {Secretary), 

 on the Fossil hyllopoda of the Pahcozoic Hocks. 



In our former Report (1883) we offered a Synopsis of the known genera 

 of the Fossil Phyllopods, and we have not found reason to modify the 

 classification tliere proposed, as far as the univalve genera are concerned, 

 except (1) that the term 'flat-shield' is incorrect for a group in which 

 several forms are slightly convex or subconical ; (2) that one (Di])- 

 terocarifi) is bent along the back in a ridge-likc manner; (3) possibly 

 Pinnocaris is really bivaived, without a I'ostral piece, and not merely 

 sutured along the back ; (4) probably Crcscentilla may be placed near 

 Pterocan-f and Vqitcrocaris. Last year we offered observations on some 

 genera that have bent or folded carapaces (Hi/menocaris), and on somo 

 that are bivaived (Cari/ocaris and Liinjulornris') ; but we have now to take 

 up the tkt-shielded or subconical forms, excepting the Ditlii/wcarides. 



I'^xaniining all the species of which specimens or figures are within 

 reach, we find the following genera and species; and we have briefly 

 described or re-described them on one uniform plan, so that comparison 

 may be the more easily made. 



List of thi; Simx'ies ov thi: Fnssii, Univalved Phtllopoda 



(EXC'KI'TING DlTilYUOCAUls). 



I. Shield not sutured alonrj the hach. 



1. Posterior vuiryhi riitirr. 



1. DiscrsocARis, II. Woodward, 18CC. 

 .1. Krowniana, II. W. 

 2. dubii, F. A. Koeincr. 

 :!. lata, II. W. • 

 •t. triasica, IIcus.k. 



.■). >|1. iiov. 



(>. iMMigcncr, Clarke. 



7. / Ki.^'i*^) ff- ^^'^• 

 '2. Spathiocauis, Clarke, 1882. 



1 . Emcr.sonii, Clarke. 



2. )inj,fulina, Clarko. 



;}. ruoLADOCAUls, H. Woodward, 1882. 



1. Lceii, H. W. 



2. sp. nov. 



4. LisoocAUis, Clarke, 1882. 



1. laitheri, Clarke. 

 ."). Ellu'socaui.s, II. Woodward, 1882. 



1. Dewalquei, II. W. 



2. sp. nov. 



Vosfrr'wr marfjlii. trvvratr, indented, 

 or gliyhtlij notched. 



Caudiocauis, H. Woodward, 1882. 



1 . Koenieri, H. W. 



2. bipartita, II. W. 

 ;;. Veneris H. W. 

 4. Koeueiii, Clarke. 



8. Posterior margin- deeply notched. 



DiPTEROCAKis, Clarke, 1883. 



1. pes-cervie, Clarke. 



2. vetusta, d'Arch. i: de V. . ,.• . 

 ;(. procne, Clarke. ; 

 4. pennsu-dicdali, Clarke. 



(■). Etlieridgei, nobis. 

 I'TKRocAais, Harrande, 1872. 



I. bolieinica, Itarr. i f 



Crescentii.la, ISarrande, 1872. » 



1 . pugnax, Uarr. . ' 



