VIII LIST OF ILLUSTRATIONS. 



Facing 



36. A new Paleocene mammal from North Dakota 436 



37-39. Fossil beetles from Florissant, Colorado 472 



40-41. Rotatoria from Los Angeles, California 478 



42-47. West American marine mollusks 682 



TEXT FIGURES. 



Page. 



Wings of Stictia Carolina Fabricius. — Veins : 1, costal ; 2, basal ; 3, dis- 

 coidal ; 4, subcostal ; 5, median ; 6, submedian ; 7, submedian cross= 

 transverse median of Cresson ; 8, radial ; 9, third cubital cross ; 10, 

 second cubital cross; 11, first cubital cross; 12, cubitus; 13, first 

 discoidal cross=first recurrent of Cresson ; 14, second discoidal cross= 

 second recurrent of Cresson. Cells: A, costal; B, radial; C, first 

 cubital; D, second cubital; E, third cubital; F, median; G, submedian; 

 H, second submedian=second discoidal of Cresson; I, first discoidal; 

 J, second discoidal=third discoidal of Cresson; K, anal; L, basal lobe; 

 M, basal sinus; N, anal sinus; R, retinaculum 4 



Figs. 1-G. — Wings of 1, StenioUa dupUcata; 2, Stictia Carolina; 3, Sticti- 

 ella rillosa; 4, Bicyrtcs ventralis; 5, Bcmhix similans; 6, Microbemhex 

 monodonta 144 



Figs. 7^4. — Eighth sternite of 7, StenioUa nigripes, ventral view ; 8, S. 

 duplicata, ventral view ; 9, S. albicantia, ventral view ; 10, S. obliqua, 

 ventral view ; 11, S. tibialis, ventral view ; 12, S. nigripes, lateral view ; 

 13, 8. duplicata, lateral view ; 14, S. albicantia, lateral view ; 15, S. 

 obliqua, lateral view ; 16, S. tibialis, lateral view ; Genital stipites of 

 17-19, StenioUa nigripes ; 20-22, S. dupUcata; 23-25, S. albicantia; 26- 

 28, S. obliqua; 2^-30, S. tibialis; Tibia and metatarsus of 31, StenioUa 

 obliqua, male ; 32, S. tibialis, male ; 33, S. tibialis, female ; 34, Seventh 

 tergite, Stictia signata, male ; 35, Lateral spine, seventh tergite, S. sig- 

 nata, male ; 36, Seventh tergite, S. caroliiia, male ; 37, Lateral spine, sev- 

 enth tergite, S. Carolina, male; Genital stipites, 38-39, S. signata; 40- 

 41, S. Carolina; 42, Middle femora, S'. Carolina, male; Antenna, 43, S. 

 signata, male ; 44, S. Carolina, male 145 



Figs. 45-85.— Genital stipites of 45-40, Stictiella pictifrons; 47-48, 8. for- 

 mosa; 49-50, S. mclanosterna ; 51-52, 8. scrrata; 53, 8. plana; 54-55, S. 

 tuberculata; 56, /S. calUsta; 57-58, 8. bituberculata ; 59-60, 8. emar- 

 ginata; 61-62, S. pulchella; 63-64, /S. speciosa; 65-66, 8. melavipous ; 

 67-68, 8. villosa; 69-70, 8. tcnuicornis; 71-72, -S. megacera; 73-74, 8. 

 exigua; 75, 8. pulla; 76-77, 8. femorata; 78-79, 8. diver gens; 80, Api- 

 cal segments, antenna of S. pictifrons, male ; 81, Antenna of 8. formosa, 

 male; 82, S. mclanosterna, male; 83, 8. serrata, male; 84, 8. plana, 

 male; 85, S. cullista, male 146 



Figs. 86-110. — Antenna of 86, Stictiella bituberculata, male; 87, S. ernar- 

 ginata, male ; 88, 8. pulchella, male ; 89, 8. speciosa, male ; 90, 8. tenui- 

 cornis, male; 91, 8. mergacera, male, basal part; 92, 8. exigua, male; 

 93, /S'. pulla, male; 94, 8. femorata, male; 95, S. divergens, male; 96, 

 Middle tibia and metatarsus of S. pictifrons, male; 97, S. formosa, 

 male; 98, Last segment, left anterior tarsus of 8. formosa, male; 99, 

 Middle tibia and metatarsus of ^'. mclanosterna, male; 100, S. serrata, 

 male ; 101, 8. tuberculata, male ; 102, Last segment right anterior tarsus 

 of S. tuberculata, male ; 103, Middle tibia and metatarsus of S. eallista, 

 male; 104, S. bituberculata, male; 105, S. emarginata, male; 106, /S. 

 pulchella, male; 107, S. speciosa, male; 108, 8. melatnpous, male; 

 109, Middle tibia of S. femorata, male ; 110, /S. divergens, male 147 



