26 STRATIOMYIDiE. 



Genus ACANTHINA, Wied. 



Acanthina, Wiedemann, Auss. Zweifl. ii, p. 50 (1880) [preocc. Fisch. 



(1806)]. 

 Acanthinia, Macquart, Hist. Nat. Dipt. i. p. 240 (1834) [lapsus], 

 Artemita, Walker, List Dipt. Brit. Mus. v, Supp. 1, p. 61 (1854). 

 Acanthinomyia, Hunter, Tr. Am.Ent. Soc. Phil, xxvii, p. 129 (1901). 

 Cibotogaster, Enderlein, Zool. Anz. xliii, p. 305 (1914). 



Genotype, CKtellaria elongata, Wied. ; by Brauer's designation 



(1882). 



Head more than semicircular, as broad as anterior part of 

 thorax; eyes hairy, contiguous or subcontiguous for a short 

 distance in J, facets of uniform size in both sexes ; frons in $ 

 rather narrow, sides nearly parallel, postocular orbit in § broad. 

 Antennae placed low down on head at tip of frontal prominence, 

 barely above level of lower part of eyes ; 1st and 2nd joints short, 

 (3rd elongate, cylindrical, with short apical style. Proboscis and 

 palpi small. Thorax moderately arched, much broader behind, 

 anterior corners rounded ; scutellum broad, nearly semicircular, 

 4-spined. Abdomen rounded, thick, much broader than thorax ; 

 genitalia small. Legs slender, simple, moderately long. Wings 

 with normal venation. 



Range. Orient, Mexico, Central and South America. 



As the name Acanthina is preoccupied in Mollusca, Artemita, 

 Walk., should be used, but I decline to accept changes in well- 

 known names of such long standing. Cibotogaster, Ender., erected 

 on slight differences in the last antennal joint, and the shape of 

 tiie thorax and abdomen, does not appear generic-ally distinct. 



The two Indian species are easily known by their size, azurect 

 beiug 8 to 9 mm. long and argentihirta only 3 mm. 



7. Acanthina azurea, Gerst. 



Acanthina azurea, Gerstaecker, Linn. Entom. xi, p. 835 (1857) ; 



Brunetti, Eec. Ind. Mus. i, p. 100 (1908). 

 Acanthina auricoUis, Bigot; Brunetti, Rec. Ind. Mus. i, p. 100 (1907) 



(nom. nucl.) ; Brunetti, op. cit. vii, p. 449 (1912), J $ • 

 Cibotogaster azurea, Enderlein, Zool. Anz, xliii, p. 305, fig. 11 



(antenna, $) (1914). 

 ? Gliiellqria ohesa, Walker, Proc. Linn. Soc. Lond. v, p. 232 (1861); 



Osten-Sacken, Ann. Mus. Gen. xvi, p. 411 (1880), xviii, p. 17 (1882). 



3 2 • Head with eyes in <S with dense yellow pubescence 

 above and brown pubescence in front, nowhere actually touching 

 but extremely near each other for a considerable distance, and 

 separating upwards very gradually, leaving a very narrow elongate 

 greyish triangle below the large black ocellar triangle which fills 

 the space from eye to eye ; above this the rather large vertical 

 space is orange-brown with a few black bristles ; frontal triangle 

 smooth, shining, bare, orange ; proboscis, palpi, and labella all 

 bright orange-brown ; antennae with first two joints orange, 3rd 



