532 



INDEX. 



Isograptus gibberulus 

 Lasiograptidae 

 Lasiograptus ... 



cost at us 

 — fibratus 



Harkuessi 



52 



304 



318 



327 



.. 331; XXXIV, 5 

 325; XXXIV, 1 

 var. costatus 



327 ; XXXIV, 2 

 margaritatus . . . 332 ; XXXIV, 6 

 mucronatus ... 321 ; XXXIII, 6 

 — var. bimucronatus 



323 ; XXXIII, 8 

 var. inutilis 



322 ; XXXIII, 7 

 var. nobilis 



324 ; XXXIII, 9 



retusus 

 velatus 



Lateral branching 



Leptograptidae 



Leptograptus ... 



— antiquus 



capillaris 

 ascendens 

 flaccidus 



328; XXXIV, 3 

 .. 329; XXXIV, 4 



70 



103 



... 104 



134 



112: XV, 4 



117; XVI, 6 



106; XIV, 1 



var. arcuatus 111 ; XV, 3 

 var. macer ... 110; XV, 2 

 var. macilentus 



grand is 



latus 



validus 



109; XIV, 



var. spin iter, 108 



115 



116 



113 



var. incisus, 114 



Linograptus Nilssoni 



Loganograptus 



Logani 



Lomatoceras priodon 



Mesograptus ... 



foliaceus 

 ma gnus 

 modestus 



3, XV, 1 

 XIV, 2 

 XVI, 4 

 XVI, 5 

 XVI, 1 

 XVI, 2 

 ... 370 

 80 



81; XI, 1 



418 



T>\, 258, 293 

 ..221, 259; XXXI, 8 

 221, 266; XXXI, 14. 

 221, 263; XXXI, 11 

 var. diminutus 



221, 265; XXXI, 13 

 — var. parvulus 



221, 264; XXXI. 12 

 multidens 221, 261; XXXI, 9 



var. compactus 



221, 262; XXXI, 10 



argutus 

 atavus 



attenuates 

 Barrandei 



Becki ... 



boheniicus 



broughtonensis 



capillaceus 



eliimsera 



Microscope, Parkes-Lapwortli ... 3 



Monograptidae ... ... ... ... 359 



Monograptus 359, 496, 502 



aciuaces ... 364; XXXVI, 2 



acus 431; XLIII, 7 



approximates var. Geinitzi 



492 ; L, 5 

 argeuteus ... 388; XXXVIII, 5 

 — var. cygneus 



389 ; XXXVIII, 6 

 ... 408; XL, 3 

 403; XXXIX, 1 



436 



462 ; XLVI, 6 



452 ; XLV, 4 



S67 ; XXXVI, 4 



... 431 



458; XLVI, 4 



398 ; XXXIX, 3 



— var. Salweyi 

 400 ; XXXIX, 5 



— var. semispinosus 

 4(11 ; XXXIX, 4 



circularis ... 479 ; XLVIII, 9 



Clingani ... 463; XLVI, 11 



colonus 391, 395, 397 ; XXXVIII, 8 

 — var. compactus 



393 ; XXXVIII, 10 

 var. ludeusis 



394; XXX VIII, 9 



comis 381; XXXVII, 9 



communis ... 480; XLIX, 1 



— var. rostratus 



481 ; XLIX, 2 



concinnus 368; XXXVI, 5 



convolutus ... 467; XLVII, 1 



var. communis ... 480 



var. fimbriatus ... 483 



... 443 



.414; XLI, 7 



412 



435 ; XLIV, 3 

 456 ; XLV, 6 

 423 ; XLII, 9 



389 



XXXVI, 1 

 XLVIII, 4 



crassus 



crenularis 



crenulatus 



crinitus 



crispus 



cultellus 



cygneus 



cyphus 



fimbriatus 



... 362 

 482 

 var. similis 

 483 



XLVIII, 5 



