STICHOPOGON.— PLANETOLESTES. 171 



. The only other described species from our region is : — 



Stichopogon (Dasypogon) candidus, Macq. Dipt. Ex. Suppl. i. p. 67 ; Bellardi, 

 Saggio &c. ii. p. 78. — Mexico. 



Syn. Dasypogon gelascens, Walker, Tr. Ent. Soc. Loud. n. ser. v. p. 277 [Bellardi] . 

 Dasypogon fasciventris, Macq. Dipt. Ex. Suppl. iv. p. 69, t. 9. f. 13 [apud Bellardi]. 



HOLCOCEPHALA. 



Holcocephala, Jaennicke, Neue exot. Dipt. p. 51 (1867). 

 Discocephala, Macquart (nomen prseoc). 



1. Holcocephala longipennis. 



Discocephala longipennis, Bellardi, Saggio &c. ii. p. 286, t. 1. f. 14 \ 

 Discocephala divisa, Walker, Trans. Ent. Soc. Lond. n. ser. v. p. 279 2 . 



Hah. Mexico 2 , Jalapa (Truqui x ) ; Costa Eica, Cache (Sogers). 



I have a single specimen from Costa Eica which agrees with Prof. Bellardi's type ; 

 the latter has the dark spot at the tip of the wings much larger than the figure 

 represents it to be. Walker's species is the same. 



The other species from Mexico hitherto described (there are none from other parts 

 of Central America) are : — 



Holcocephala (Discocephala) affinis, Bellardi, Saggio &c. ii. p. 86, 1. 1. f. 13. 



— — ( ) deltoidea, Bellardi, 1. c. p. 85, 1. 1. f. 12. 



( ) minuta, Bellardi, 1. c. p. 83. — Tuxpango. 



( ) interlineata, Walk. Trans. Ent. Soc. Lond. n. ser. v. p. 279. 



(Dasypogon) nitida, Wiedem. Aussereur. zweifl. Ins. ii. p. 603 ; Bellardi, 



1. c. p. 84 (Jalapa, Truqui). 



PLANETOLESTES. 



Planetokstes, Arribalzaga, Asilid. Argent, p. 3 (in Anal. Soc. Cient. Argent, viii. pp. 145-153) (1879). 



1. Planetolestes secabilis. 



Dasypogon secabilis, Walker, Trans. Ent. Soc. Lond. n. ser. v. p. 276 1 . 

 Dasypogon (Saropogon ?) secabilis, Bellardi, Saggio &c. ii. p. 63, tab. i. f. 4 2 . 



Hab. Mexico \ Tampico, Cuantla (de Saussure 2 ), Oaxaca (Salle 2 ), Cordova (Hoge) ; 

 (tUATEMAla, Teleman (Champion) ; Panama, Bugaba 800 to 1500 feet (Champion). 



I have compared the types in the British Museum and in the collection of Prof. 

 Bellardi in Turin. Walker's description is very imperfect : on p. 275, line 1, for 

 * front ' it should read ' face ' ; line 12, for [wings] * cinereous,' ' yellowish-brown.' 



In Prof. Bellardi's description the knob of the halteres is described as " black ;" of 



z2 



