VIII PROCEEDINGS OF THE NATIONAL MUSEUM vol. ei 



Page 



24. Left ramus of mandible of Periptychus gilmorei Gazin 44 



25. Left maxillary portion of Anisonchus dracus Gazin, type 46 



26. Portion of left ramus of mandible of Anisonchus onostus Gazin, type 47 



27. Left maxillary portion and portion of left ramus of mandible of Anison- 



chus oVujistus, new species, type 47 



28. Left maxillary portion of Haploconus inopinatus Gazin, type 49 



29. Portion of left maxilla of Haploconus? elachistus, new species, type 51 



80. Skull of Aciprion formosum Cope 72 



31. Skull and lower jaw of Aciprion formosvm Cope 73 



32. Anterior part of the skull of ExosUnus serratus Cope 7;") 



38. Distribution of the Mexican forms of Coniophanes flssidens (map) 109 



34. Map showing river systems of Liberia 126-127 



35. Camharus pellucidus au.slraUs, new subspecies 143 



30. CambaruH cahni, new species 147 



37. Diagram of the possible phylogeuy of Trimorphodon 151 



38. Distribution of the speei»'s of Trimorphodon 153 



39. The region of the western Eskimo (map) 173 



40. Distribution of .4 er//« (map) 441 



41. Diagram of Aegia carapace, illustrating some of the terms used in 



describing species 447 



42. 43. Aegla paid tia, new species, male holotype 459 



44. Aegla sanlorenzo, new species, male holotype 462 



45. Aegla platcnsis, new species, male holotype 465 



46. Aegla platensis, new species, male paratype 466 



47. Aegla urugnnyana, new species, male holotype 468 



48. 49. Aegla prado, new species, male holotjTpe 471 



50. Aegla castro, new species, male holotype 474 



51. Aegla franca, new species, male holotype 477 



52. Aegla jujuyana, new species, male holotype 479 



53. Aegla dcnticulata Nicolet, male neotype 481 



54. Aegla papudo, new species, male holotype 484 



55. Aegla odehrechtii Miiller, male neotype 487 



o6. Aegla odebrechtii paulensis, new subspecies, male holotype 491 



57. Aegla neuquensls, new species, male holotype 493 



58. Aegla afpMis, new .species, male holotype 496 



59. Aegla humahunca, new species, male holotype 499 



60. Aegla concepcionensis Schmitt, male holotype 501 



61. Aegla laevis (Latreille), male neotype 505 



62. Aegla laevis talcahuano, new subspecies, male holotype 509 



63. Aegla abtao Schmitt, male holotype 511 



64. Aegla riolimayana, new species, male holotype 514 



