Species of Porphyrops. 359 
basi fasciis interruptis flavo-diaphanis, hypostomate nigro. 
(Mas. ) 
Long. corp. 2 vel 3 lin. 
Antennarumarticulus 3"* brevior quam in precedente: Frons argenteo- 
micans ; Hypostoma et barba nigre: Thorax viridi-aureus argenteo- 
micans: Abdomen argenteum nec ut in precedente nigro-pilosum, seg- 
mentum 1™¥™ basi viride, 2%%™ 34™ et plerumque 4'"™ flavo-diaphana 
linea dorsali et incisuris nigris argenteo micantibus: Coxe et femora nigro- 
fuse anteriora apice pallida: Tibie pallide ferruginee, postice apice 
nigre : Tarsi postici toti, antici apice, concolores. 
Differt a P. diaphano etiam alarum nervo 4*° vix leniter sinuato, 
pedibus gracilioribus et filis analibus vix emergentibus. 
Confer P. argyreum, Meig. IV, 46,2, hypostomate (atque ut credo 
etiam barba) argenteo; etiam Muscam semiargenteam, Donovan et 
Turton, pedibus ferrugineis. 
q Ibid.] 
10. versicolor. Meig. IV, 50, 9. 
q The female, ibid. very rare.] 
11. Jeucocephalus. Meig. IV, 42, 8. 
Segmentum 24"™ macula laterali flavo-pellucida obsoletiore. 
| The female ibid.] 
12. vestitus. Meig. IV, 48, 5. 
§| Two males ibid.] 
D. Antennarum seté dorsali nudd prope basin articuli tertii insertd. 
(Bina Genera?) 
13. annulipes. Meig. IV, 56, 25. 
4{ Common on the coast at Holywood. ] 
14, flavicoxa. Meig. IV, 57, 27. 
4] Near Holywood in moist meadows. ] 
15, flaviventris. Meig. IV, 58, 28. 
q Ibid.] 
MEDETERUS. Meig. IV, 59, CXXVIIL. 
A. Femoribus anticis obclavatis subtus spinulosis, coxvis elongatis 
Antennarum set mediocri vel brevi. 
