ACANTHINA. 41 



ACANTHINA. 



Acanthina, Wiedemann, Aussereur. zweifl. Ins. ii. p. 50 (1830). 



l. Acanthina argentea, sp. n., <j. 



Body covered with a silvery fur, especially dense on the upperside of the thorax, less so on the underside,. 



where the black ground-colour is visible through it. Face reddish. Antennae reddish, darker at the tip. 



Legs brownish-yellow ; tibiae and tarsi more brownish. Wings hyaline, the veins pale yellow ; central 



cross-veins and a part of the fifth vein a little darker ; stigma brownish-yellow, connected with a brownish 



cloud on the central cross-veins ; a slight grey shadow on the apex. 

 Length 6 millim. 



Hab. Costa Rica, Cache (Rogers). — Colombia (Berlin Museum). Two males. 



The following is a list of species of Stratiomyidse from Mexico and Central America 

 described by earlier writers, and not mentioned by me in the above descriptions 

 (whenever no locality is given, Mexico is understood) : — 



Macroceromys fulviventris, Bigot, Ann. Soc. Ent. Fr. 1879, p. 187. / 



Neoeocaireta rufipalpis, Wiedem. A. z. Ins. ii. p. 619 ; Macq. Dipt. Ex. i. 1, -"* / 



p. 172 (Liphysa) ; O. Sacken, Catal. &c. 1878 (Neoexaireta). ° A / 



Beris mexicana, Bellardi, Saggio &c. i. p. 20, 1. 1. f. 6 (Oplacantha, according 



to Rondani) ; WilHston, Canad. Entom. 1885, p. 123. -■• , : 



Oplacantha Umbaia, Bigot, Ann. Soc. Ent. Fr. 1879, p. 196. / < v «/ 



Histiodroma flaveola, Bigot, 1. c. p. 205. /'"/■■ 



Macrosargus smaragdiferus, Bigot, 1. c. p. 226. 

 Sargus aureus, Bellardi, Saggio &c. i. p. 42, t. 1. f. 20. 



ccesius, Bellardi, 1. c. i. p. 40, 1. 1. f. 18. 



clavatus, Walker, List &c. v. p. 93 ; Bellardi, 1. c. i. p. 41.— Para v 



Morel ia, Mexico. 



latus, Bellardi, 1. c. i. p. 41, 1. 1. f. 19. 



linearis, Walker, List &c. v. p. 318. 



nigrifemoratus, Macq. Dipt. Ex. Suppl. ii. p. 31 ; Bellardi, 1. c. i. p. 42. 



sallei, Bellardi, 1. c. i. p. 43, 1. 1. f. 21. 



speciosus, Macq. Dipt. Ex. Suppl. i. p. 56 ; Bellardi, 1. c. i. p. 40. — 



Merida and Jalapa, Mexico. 

 st^amineus, Fabr. Syst. Antl. p. 253 ; Wiedem. A. z. Ins. ii. p. 39 ; 



Bellardi, 1. c. i. p. 44. 

 subinterruptus, Bellardi, 1. c. i. p. 44, 1. 1. f. 22 ; Walker, Trans. Ent. Soc. 



Lond. n. ser. v. p. 271. 



versicolor, Bellardi, 1. c. Append, p. 13, f. 8. — Oaxaca, Mexico. 



splendens, Bigot, Ann. Soc. Ent. Fr. 1879, p. 224. 



biol. centk.-amee., Dipt., August 1886. g 



