218 THE ENTOMOLOGIST. 



(2) 1. Mouth-parts produced in the form of a beak Agathis, Latr. 



(1) 2. Mouth-parts normal and not produced. 

 (G) 3. Areolet present and distinct. 



(5) 4. First cubital cell coalesced with first discoidal 



MicRODus, Nees. 



(4) 5. First cubital cell entire .... Earinus, Wesm. 



(3) 6, Areolet entirely wanting .... Orgilus, Hal. 



Agathis. 



(2) 1. Abdomen centrally broadly red . .1. malvacearmn, Latr. 

 (1) 2. Abdomen entirely black. 



(G) 3. Areolet triangular. 



(5) 4. Mouth-parts longer than head ; wings nigrescent 



2. nigra, Nees. 



(4) 5. Mouth-parts shorter than head ; wings subhyaline 



3. angelica, Marsh. 



(3) G. Areolet quadrangular. 



(8) 7. Palpi red ; terebra longer than body . 4. rtijipalpis, Nees. 



(7) 8. Palpi black ; terebra as long as body . . 5. brevisetis, Nees. 



Agathis malvacearum. — Mr. Donisthorpe has given me this 

 species, which he once found in abundance upon Malva moschata 

 at Rye, Sussex, in August. 



A. nigra. — Not uncommon. Abinger Hammer, near Guild- 

 ford, in August, 1900 (E. A. Butler) ; Devon (Bignell) ; Green- 

 ings, in Surrey, August, 1871 (Wilson Saunders). 



A. angelica. — I possess one female from Dr. Capron's collec- 

 tion, probably taken at Shere, in Surrey. 



A. brevisetis. — Two females from Abinger Hammer, taken by 

 Butler, and one from Dr. Capron's collection. 



MiCRODUS. 



Second segment not longitudinally aciculate. 



Hind tibise red, with apices black. 



Abdomen laterally rufescent . . 1. linguarius, Nees. 



Abdomen entirely black. 



Hind femora black ; size 2| mm. . . 2. nugax, Reinh. 



Hind femora red ; size at least 3 mm. 



Size 6 mm. ; tegnlfe black . . 3. clmisthalianus, Rtz. 



Size 3-4i mm. ; tegulae testaceous . 4. tmnidulus, Nees. 



Hind tibifB black and white . . 5. cinguHpes, Nees. 



Second segment longitudinally aciculate. 



Third segment entirely smooth. 



Mesonoium rufescent • . . .6. calculator, Fab. 



Mesonotum black . . . .7. hrevicaiidis, Reinh. 



Third segment at least partly aciculate. 



Hmd coxse red 8. riijipes, Nees. 



Hind coxae black. 



Hmd tibiffi black and white . . 9. nigulosus, Nees. 



17] 18. Hind tibiae red, with apices black. . 10. mediator, Nees. 



