LIST OF ILLUSTRATIONS. XI 



Page. 



122. Skull of prairie dog and bones and teeth of camels 642 



123. Skull of woodchuck and bones of camel 642 



124. Teeth of horse, bone of camel, and jaw of hyaena 642 



125. New nearctic spider mites 666 



TEXT FIGURES. 



Lateral line scale of Characilepis tripartitus, new species; type. The enlarged 

 drawing shows the sculpture. 2. Scale of Characilepis tripartitus, new species. 

 3. Scale of Characilepis tripartitus, new species. 4. Part of scale of Brycon- 

 americus hyphessus Eigenmann. 5. Part of scale of Acanthocharax microlepis 

 Eigenmann. 6. Details of sculpture in scale of Charax gibbosus (Linnaeus). 



7. Part of scale of Hyporhamphus unifasciatus (Ranzani) 20 



Iriartites raughani Berry. Gatun formation, 1^ miles northeast of Gatun, 



Canal Zone. 1,2. Lateral views. 3. View from below, showing large hilum . 22 

 Rhamphomyia enena. A. Part of wing. B. End of abdomen. C. Antenna... 31 



Asilus palaeolestes. Details of wing 31 



Sargus vetus. Part of wing 32 



Nemotelus eocenicus. Abdomen and part of wing 32 



Acanthomyites aldrichi. Diagrammatic figure of dorsal bristles of thorax 33 



Acanthomyites aldrichi. Anterior leg 33 



Delphax eterum. Scutellum 34 



Tilgidopsis haesitans. Wing 37 



Eoformica eocenica. Restoration of head : 38 



Clavulina nodosaria d'Orbigny. Specimen from 10 fathoms, Montego Bay. ... 54 

 Polymorphina cf. vitrea d'Orbigny. Specimen from 10 fathoms, Montego Bay. 54 

 Quinqueloculina agglutinans d'Orbigny. Apertural view of specimen from 



1 fathom, Bogue Islands, Montego Bay 65 



Quinqueloculina bidentata d'Orbigny. Apertural view of specimen from 



Runaway Bay 65 



Quinqueloculina lamarckiana d'Orbigny. a, side view of specimen; b, opposite 



side; c, apertural view of specimen from 9 fathoms, Montego Bay 66 



Quinqueloculina cuvieriana d'Orbigny. a, side view; b, opposite side; c, aper- 

 tural view. Apertural view of specimen from Runaway Bay 67 



Quinqueloculina dilatata d'Orbigny. Specimen from 1 fathom, Bogue Islands, 



Montego Bay. Side view 68 



Quinqueloculina dilatata d'Orbigny. Side view of another specimen from the 



same locality 68 



Quinqueloculina poeyana d'Orbigny. a, side view; b, opposite side; c, aper- 

 tural view. Specimen from 10 fathoms, Montego Bay 68 



Triloculina oblonga. a, side view; b, opposite side. Specimen from Montego 



Bay 69 



Triloculina quadrilateralis d'Orbigny. a, side view; b, opposite side; c, aper- 

 tural view. Specimen from 6 fathoms, Montego Bay 71 



Biloculina denticulata. a, front view; b, side view. Specimen from 6 fathoms, 



Montego Bay 74 



Peneroplis proteus d'Orbigny. Specimen from 6 fathoms, Montego Bay, show- 

 ing different forms of this species 76 



Balanus engbergi. External and internal views of the tergum, a, and of the 



scutum, b 113 



Balanus engbergi. a, labrum; b, maxilla; and c, mandible 114 



Crystal of Vivianite 416 



Greedite crystals, Type 1 421 



Creedite crystal, Type II 422 



