158 Mr. T. D. A. Cockerell — Descriptions and 



EXPLANATION OF THE PLATES. 

 Plate IV. 



Fig. 1. Bursa gnorima. 



Fig. 2. Alectnjon (Phroitis) aleimus. 



Fie/. 3. - (Hima) protruside?is. 



Fig. 4. ( ) gwatkinianus. 



Fig. 5. Pisania townsendi. 



Fig. 6. Mitra vaccinator. 



Fig. 7. (Pusia) iteina. 



Fig. 8. Lamellaria (Cltelgaotus) berghi, Desb. (juv.). 



Fig. 9. Melanella lampra. 



Fig. 10. Mueronalia aethria. 



Fig. 11. Turbonilla umbrina. 



Fig. 12. exilispira. 



Fig. 13. patruelis. 



Fig. 14. thryullis. 



Fig. 15. Stgloptggma clymenc. 



Fig. 16. Fulimella squarrosula. 

 Fig. 17. Cingulina secernenda. 



Fig. IS. Triphora incolumis. 



Plate V. 



Fig. 19. Amphithalamus psomus. 



Fig. 20. Rissoina {Chiliostigma) refugium. 



Fig. 21. Fossa r us eutorniscus. 



Fig. 22. — — ( Couthouyia) cancellarius. 



Fig. 23. Triphora interpres. 



Fig. 24. Leptothyra mittochrista. 



Fig. 25. Minolta charmosgne. 



Fig. 26. (Conotrochus) eutyches. 



Fig. 27. Euchelus xeniolum. ■ 



Fig. 28. Cylichna euthlasta. 



Fig. 29. O.rgno'e omega. 



Fig. 30. Oylindrobulla systremma. 



Fig. 31. Dentalium tomlini. 



Fig. 32. Phacoides malcolmeyisis. 



Fig. 33. Divaricella cyj)selis. 



Fig. 34. Cgpricardia vertumnalium. 



Fig. 35. Carditella concinna. 



XVII. — Descriptions and Records of Bees. — LXXIX. 

 By T. D. A. Cockerell, University of Colorado. 



Col/et es gig as, sp. n. 



$ . — Length about 17 mm. ; anterior wing 12 mm. 

 Black, including legs and antennae, the middle of flagellum 

 faintly reddish beneath ; tegula? clear ferruginous; hair of 



