of the Family Tabanide. 297 
Silvius nitescens, 3, Walker. 
The only specimen; the type has Jost its abdomen and 
antennz, it is therefore impossible to judge if it is really a 
Silvius, it has more the appearance of a Pangonia; the spurs 
on the hind tibiz are present; it is simply labelled “ Aus- 
tralia.” 
The Mesomyia maoriorum, g, described by Bigot, in 
Mém. Soc. Zool. Fr. p. 621 (1892), is exactly similar in 
appearance to the male specimens of Walker’s Tabanus 
truncatus, from New Zealand, in the British Museum Col- 
lection, and after careful examination I can find no trace of 
real spurs on the hind tibizw; there are also no ocelli, and 
the markings of the abdomen are typical of the Tabani. 
Mr. Hutton, of Christchurch, New Zealand, informs me he 
has a female specimen of this species, and remarks, “ It 
agrees in the specific characteristics given by Bigot, but has 
an oval abdomen and no ocelli, thus differing from Stlvius.” 
There seems, therefore, no doubt that it must be regarded 
as a specimen of 7’. truncatus, Walker. 
From unknown Locality. 
Silvius vulpecula, 2, Wiedem., Auss. zweifl. Ins. i. p. 195 (1828); Walker, 
List Dipt. pt. i. p. 205 (1848); id. pt. v. Suppl. 1, p. 147 (1854) 
(Chrysops) ; Macq., Dipt. Exot. i. p. 111 (1838) (Ectenopsis) ; Loew, 
Dipt. Stidafrik. p. 15 (1860). 
Subgenus EsrnBecxi4, Rondani. 
Esenbeckia, Rondani, Archivio Canestrini, iii. p. 83 (1863). 
E. vulpes, $ 2, Wiedem., Auss. zweifl. Ins. i. p. 111 (1828); Walker, 
List Dipt. v. Suppl. 1, p. 274 (1854) (Szedvzws) ; Rondani, Archivio 
Canestrini, ili. p. 83 (1863).—Brazil. 
E. pangonina, 2, Wiedem., Auss. zweifl. Ins. ii. p. 623 (1828) (Sdeius) ; 
Rondani, Archivio Canestrini, ili. p. 88 (1868). [Stlvius Esenbeckiz, 
Wiedem., Z. c.|—The specific name was changed by Rondani, who 
made use of Wiedemann’s name of his species for the genus.—Brazil. 
J. Third joint of antenne simple. 
Dam O SOV CUO Wis. t~ aiiotavaty ceyalclstcrepeasy eye fs) = Oks 3. 
[Deas AOR MI, shoo ee redo ose Ons Oncmer 4, 
3. Reddish yellow. Posterior femora with 
blackepulbescenceh articles ecteteee eel oie © vulpes, $ 9, Wiedem. 
4, Brown. Abdomen with white transverse 
andes Es ots ors cus Fo tho cae aD SRLS pangonina, 9, Wiedem. 
GasTROXIDES, Saunders. 
Gastroxides, Saunders, Trans, Ent. Soe. iii. pt. i. p. 59 (1841); Loew, 
Dipt. Siidafrik. p. 15 (1860). \ 
