456 SCUDDER OX CARBONIFEROUS ARACHNIDA. 



as if Kiista had more than one species befoi-e liim, as his figures i and iv differ remark- 

 ably, fig. I liaving a cephalotliorax scarcely half so long in proportion to its breadth as 

 fig. IV, and its abdomen is strongly constricted at the base, while in fig. iv the latter only 

 tapers gently in front. Our own species has the abdomen much broader and larger than 

 the cephalothorax, and tapers in front considerably bnt not so rapidly as in Kusta's fig. 

 IV. More recently Kusta has described other species, but they seem no nearer ours. 



EXPLANATION OF PLATES. 

 Platk 39. 

 Figs. 1 ami 3 are by J. Henry Blake; flgs. 2, 5-8, 10 by Mrs. Katheriue Peirson Ramsay; figs. 4 and 9 by J. H. Emsrton. 

 Geralinura carbonaria ^. 

 I'oliiicherci punctulata f . 

 Geralinura carbonaria J. 

 The same ^. 

 Oeratarbus scabrtim |. 



Puliochera punctulata \'^; a fragment from the middle of the abdomen to sho%y surface structure. 

 Anthracomartus trilobilus f . 

 The same f . 

 7 he same ^. 

 The same f. 



Plate 40. 

 Figs. 1, 3, 4, 7, 12 are by J. H. Emerton; figs. 2 and 6 by S. H. Scudder; figs. 5, 8, 11, by Mrs. Katherine Peirson Earn- 

 say ; and figs. 9 and 10 by J. S. Kingsley. 

 Geraplirynus carbonarius f. 

 Graeophonus carbonarius f. 

 The same f . 



Architarhus elongatum -f. 

 Anthracomartus pustidalus f ; front view. 

 Graeophonus carbonarius t- 

 Kustarachne tenuipes f . 

 Anthracomai tus pustulatus }. 



Geraphrynns carbonarius 'f; a portion of the first broad abdominal segment, to show the surface structure. 

 The same j. 

 Geralarbus lacoei f. 

 Geraphrynus carbonarius j. 



