( 159 ) XII. Synopsis of British Hymenoptera. Anthophila ; 2)art II., Apidae. By Edward Saunders, F.L.S. [Read March 5th, 1884.] Plates V— XIII. ACUTILINGUES. Div. II. — 1st joint of labial palpi many times longer THAN APICAL. (2) 1. 2nd and 3rd joints of labial palpi subequal . . Panurgus. (1) 2. 3rd joint of labial palpi much shorter than 2nd. (28) 3. 2nd joint of labial palpi more than half as long as 1st. (15) 4. Basal joint of labial palpi longer than 2nd. (8) 5. Anterior wings with two submarginal cells. (7) 6. Species dull ; tongue longer than the palpi ; inter-mediate calcaria in J very long and toothed like a saw . . . . . . . . . . . . Rophites. (6) 7. Species shining; tongue shorter than the palpi; intermediate calcaria in } short and simple Dufourea. (5) 8. Anterior wings with three submarginal cells. (12) 9. Maxillary palpi 6-jointed. (11) 10. Abdomen short and subclavate, blue or metallic Ceratina. (10) 11. Abdomen subovate, pointed at the apex, brown or black with yellow markings . . . . . . Nomada. (9) 12.-Maxillary palpi with one or five joints. (14) 13. Maxillary palpi with one joint only . . . . Epeolus. (13) 14. Maxillary palpi with five joints . . . . . . Melecta. (4) 15. Basal joint of labial palpi shorter than 2nd. (17) 16. Scutellum spined at the sides Ccelioxys. (16) 17. Scutellum not spined. (23) 18. Maxillary palpi 2-jointed. (20) 19. $ with the apex of the abdomen not denticulated or emarginate ; J without a ventral brush . . Stelis. (19) 20. ^ with the apex of the abdomen denticulated or emarginate ; J with a ventral poUen brush. (22) 21. Abdomen with yellow markings Anthidium. (21) 22. Abdomen without yellow markings . . . . Megachile. (18) 23. Maxillary palpi 3-or 4-jointed. (25) 24. Maxillary palpi 4-jointed Osmia. TRANS. ENT. SOC. LOND. 1884, — PART II. (jULY.) M
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