1921 PROPLANULITIDM 37 



P. apparatus, nov P. subcuneatus ; Tomquist, 1894, xlvi, 4 ; 

 Pourcandes, Mezi res, (Ardennes), France ; Callovian ; Holotype ; F. 61, 

 35, 26, 39-5 ; 92, 33, 23-5, 42-5 ; 22 ribs. S.l. very degenerate, Li at 

 23 mm., 17 per cent. 



C. 2, b. laterally obscuricostate (secondary ribs feeble). 



P. poitrcandiensis, Tomquist 1894, xlvi, i ; Holotype ; Pourcandes, 

 Mezieres ; Callovian ; F. 102, 40, 29, 30; 15 strong primaries, secondaries 

 obscure. Lobes like those of P. subcuneatus [= P. apparatus], Tomquist 

 dixit ; but great difference in style of ornament. 



D. E. Phaulomorphs ; body-ch., usually preserved, 3/4 whorl or 

 less ; with lat. auricle, or signs of it, and short rostrum ; max. not 

 100 mm. and decreasing; Li, c. 29 per cent, or less. D. 1. Venter 

 smooth, subcuneate, sometimes subtabulate towards end of body-ch. 



P. subcuneiformis, nov. P. subcuneatus, Teiss. iv, 12, (F. 71, 

 35. 27, 38 ; 22 ribs ; Li at 18 est., 30 per cent. ; Poland). Tutcher Coll. 

 Christian Malford, Wilts ; K. Clay (a) ; Holotype ; S. 71, 36-5, 26, 37 ; 

 82, 36, 25, 40 ; 22 ribs ; max. c. 94 ; Li at 19, 29 per cent. Cf. also 

 Am. koenigi; Damon, Geol. Weym., 1880, I, 1 ; F. ("reduced") 90? 

 (64-5), 34, — , 40 ; iq ribs. Number of ribs agrees with next sp. but 

 concentric umbilicus with this ; Weymouth ; [K. Clay]. Colomorphs, 

 Geol. Surv. Engl. 30529, Chippenham, Wilts ; S. 32, 39, 25, 24 ; 30536, 

 " Christian Malford ? " 



P. subcuneatus, Teisseyre, iv, 14, v, 14b, c ; Holotype ; F. 61, 41, 

 24-5, 34-5 ; Li at 25 est., 32 per cent., seems too much. Czerna, Poland. 



P. auriculatus, nov. Coarsely ornate, 17 ribs, mostly trifurcate, 

 occasionally extra intercalate ; excentrumbilication marked. Like 

 P. subcuneiformis (P. subcuneatus, Teiss., iv, 12), but has 17 ribs at 

 same diam. which are stronger, while periphery is quite obtuse towards 

 end of last whorl ; umbilicus also is smaller at first, the widening in last 

 whorl being rapid. Geol. Surv. Engl., 30526 ; Holotype ; Chippenham ; 

 S. 71, 35, 26(23), 37; Li, at 16 mm., 24 per cent. ; has lateral auricle 

 and collar. Id., No. 30528, Chippenham ; S. 72, 32-5, 25, 38 ; Li at 

 18 mm., 22 per cent. ; collar and base of lateral auricle : both Fell. 

 Clay (a). A fragment (cast) comparable with this sp., Geol. Surv. 

 Scotl., No. M.i656g., On shore, Lower Brora, Sutherland ; Roof Bed ; 

 shows peripheral interruption plainly. 



P. capistratus, nov. Small ; rather coarsely ornate, 17 ribs, 

 mostly bifurcate, one intercalate ; not much excentrumb. ; complete 

 with mouth-border (auricle and collar). Geol. Surv. Engl., 30532, 

 Holotype, Chippenham; K. Clay (a); S. 61, 32, 24-5(22), 40; Li at 

 145, 2i'5 per cent. This is a smaller edition of P. auriculatus, with 

 a similar number of strong primaries ; but it is thinner and much more 

 umbilicate. Paratype, G.S.E., ex Hudleston Coll., No. 30778 ; Gris- 

 thorpe, Yorkshire ; Kell. R., soft, ferruginous ; S. 54, 29-5, 25, 40. 



D.i. Venter subgibbous. a. Paucicostate. 



P. rudis, nov. Like P. subcuneatus, Teiss., iv. 14, but stouter, 

 fuller in venter, and with rather stronger ornament. Ribs mostly 

 trifurcate, with an occasional intercalate ; about radial, but slightly 

 flexed ; venter smooth. Geol. Surv. Engl., 30525 ; Chippenham ; 

 K. Clay (c) ; indications of lat. auricle and collar ; S. 61, 41, 28 (26), 36 ; 

 88, 34, 26, 39 ; 19 ribs ; Li at 19 mm., 25 per cent. A brephomorph 

 (this sp. ?), No. 30539, Wiltshire ; K. Clay. Another example ? 

 damaged ; G.S.E., ex Hudleston Coll., No. 30776 ; Loudon, Chippenham ; 



S. 52, 39. 27 + . 33 - 5- 



D. 2, b. Multicostate. 



