X LIST OF ILLUSTRATIONS. 



Facing page. 



43. Gigantopterus americana, Wichita formation, Texas 516 



44. Gigantopleris americana, Wichita formation, Texas 516 



45. Gigantopteris americana, Wichita formation, Texas 516 



46. Gigantopteris americana, Wichita formation, Texas 516 



47. Gigantopteris americana, Wichita formation, Texas 516 



48. Gigantopteris americana with supposed polleniferous strobili 516 



49. Gigantopteris americana? supposed fructifications 516 



50. Squaliolus laticaudus 677 



51. Squalus philippinus 686 



52. Etmopterus brachyurus 686 



53. Nasisqualus profundorum 686 



54. Squaliolus laticaudus 686 



55. Map of Quarry 13 near Como, Wyoming 696 



56. Mounted skeletons of Camptosaurus 696 



57. Mounted skeletons of Camptosaurus 696 



58. Skeleton of Camptosaurus browni 696 



59. Moimted skeleton of Camptosaurus nanus 696 



60. Moimted skeleton of Camptosaurus nanus 696 



61. Skeleton of Camptosaurus nanus 696 



TEXT FIGURES. 



Page. 



Amia angustata 253 



Amia robusta 255 



Amia versicolor 258 



Amphithalamus lacimatus 263 



Amphithalamus iiiclusus 264 



Amphithalamus tenuis 265 



Telenomus abnormis. Outline of antenna of female 270 



Bephrata paraguayensis. Outline of antenna of female 274 



Sophencyrtus townsendi. Wing of female. Shading to show infuscation 275 



Leurocerus ovivorus. Outline of antenna of female 277 



Leurocerus ovivorus. Detail of wing of female showing venation 277 



Agiommatus sumatraensis. Outline of antenna of female 278 



Nodulus cerinellus 289 



Nodulus asser .•■ 290 



Nodulus helseyi 290 



Nodulus hyskensis 291 



Twelfth maxillary tooth of Brachychampsa montana. Natural size, a, lateral 



view; b, posterior view .' ^ 301 



Trichostrongylus falculatus . Bursa of male viewed from right side. d. r., dor- 

 sal ray; e. d., externo-dorsalray; e. L, extenio-lateral ray; I. v., latero- ventral 

 ray; m. I., medio-lateral ray; p. I., postero-lateral ray; v. v., ventro-ventral 



ray 364 



Trichostrongylus falculatus. Spicule and gubernaculum viewed from right side . 364 

 TVichostrongylus calcaratus. Bursa of male \'iewed from left side. d. r., dorsal 

 ray; e. (Z., externo-dorsalray; c. Z., externo-lateralray; ^u6., portion of guber- 

 naculum; L sp., portion of left spicule; Z. i;., latero-ventral ray; ?rt. Z., medio- 

 lateral ray; p. I., postero-lateral ray; v. v., ventro-ventral ray 365 



Triclwstrongylns calcaratus. Portion of bursa showing origin of dorsal ray; d. v., 



dorsal ray; e. d., externo-dorsal ray; p. I., portion of postero-lateral ray 3G6 



Trichostrongylus calcaratus. Spicules and gubernaculum. gub., gubernacu- 

 lum; I. sp., left spicule; r. sp., right spicule 366 



Trichostrongylus calcaratus. Posterior end of body of female viewed from left 



Bide 367 



