SYSTEMATIC INDEX. 



INTRODUCTORY REMARKS ... 1 



CLASSIFICATION 1 



HISTORICAL REVIEW OP BRITISH 



SPECIES 3 



Group I. — Integridorsata 4 



Sinuites ... ... ... 4 



— anceps (Salter, MS.) ... 5 



— balclatchiensis, sp. uov. t! 

 — ■ bilobatus (Sowerby) ... 7 



— cryptic us, Reed ... ... 8 



— discoides, sp. nov. ... !) 



- elongatus (Portlock) it 



- inaecallumi, sp. nov. ... 1(1 



— pseudocompressus, sp. nov. .. 11 



- pusgillensis, sp. nov. ... ... 12 



- semirugosus (Salter, MS.) ... 13 



- soudleyensis, sp. nov. ... 13 



- subrectangularis, sp. nov. ... 14 



- ? ramseyensis (Hicks) ... 15 



- ? separatus, sp nov. ... ... 16 



- ? spheroidalis, sp. nov. ... 16 



- sp ... 17 



Sinuitopsis ... ... ... ... 17 



— congruens, sp. nov. ... ... 18 



Oxydiseus ... ... ... ... 18 



— aoutus (Sowerby) ... ... 19 



— bougangensis, sp. nov. ... ... 20 



— hunteri, sp. nov. ... ... 20 



- perturbatus (Sowerby) ... ... 21 



- ? llanvirnensis (Hicks) ... 22 

 Cyrtolites 23 



— budleigliensis, sp. nov. ... .... 24 



- craigensis, sp. nov. ... ... 24 



— nodosus (Salter) ... 25 



— var. nov. llandoveriana ... 26 



— tliraivensis, sp. nov. ... ... 26 



Isospira ... ... ... ... ... 27 



— huttoni, sp. nov. ... ... ... 27 



Bucaniella 



— trilobata (Sowerby) 



- quadrisulcata, sp. nov. 



Group II. — FlSSIDORSATA ... 



Bucania ... 



- evoluta, sp. nov. 



- gravida, sp. nov. ... 



- playfairi, sp. nov. ... 



- cf. punctifrons (Eminons) 



— sp. ... 

 Kokenospira 



— credibilis, sp. nov... 



- euphemoides, sp. nov. 



- latidorsata, sp. nov. 



- lingualis (Salter) ... 



var. nov. girvanensis 



- maccullochi, sp. nov. 



- nrullochensis, sp. nov. 



- nicholsoni, sp. nov. 



- secunda (Reed) 



- subdecussata (McCoy) 

 Tetrauota 



- carrickeusis, sp. nov. 



- var. nov. craigensis 



- — var. nov. etheridgei 

 hippopus (Salter) ... 



Conradella 



— girvanensis, sp. nov. 



- sladensis, sp. nov. ... 



- ? multilineata, sp. nov. 



- fimbriata, Ulrich and Scofield 

 Temnodiscus 



— fletcheri, sp. nov. ... 



- monilifer, sp. nov.... 



— murchisoni (D'Orbignv) 



— salopiensis, sp. nov. 



- solitarius, sp. nov... 

 Bellerophon 





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.field .. 



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