274 SUPPLEMENT. 



STONYX (p. 94). 

 Stonyx clotho (p. 95). 



To the localities given, add : — Mexico, Amecameca in Morelos (F. D. Godman). 



A single injured specimen clearly belongs to this species, though Osten Sacken's 

 figure of the wing does not quite agree with it : the brown of the distal is as dark as 

 that of the proximal portion, and not light yellowish, as shown. 



3. Stonyx lacera. 



Anthrax lacera, Wiedem. Aussereur. zweifl. Ins. ii. p. 634 \ 



Hob. Mexico 1 , Acaguizotla and Hacienda de la Imagen in Guerrero (II. H. Smith), 

 Oaxaca 1 . 



Three specimens from Guerrero, agreeing well with the description. 



4. Stonyx melia, sp. n. (Tab. V. figg. 1, 1 a, 2 .) 



(5 $ . Deep black throughout, and clothed with black hair and tomentum, save on the immediate base of the 

 abdomen, where there is a lateral tuft of yellowish hair (perhaps also some white hairs on the sides of 

 the second and third segments). Wings dark brown and hyaline, the brown coloration nearly uniform. 

 The markings are similar to those of S. lacera, and may be described as follows : the brown ends 

 abruptly near the tip of the first vein, its margin thence extending outwardly to about midway between 

 the angles of the anterior branch of the third vein, and thence to and across the vein in front of the 

 third posterior cell, forming a small spot in that cell ; the outer part of the discal cell is brown, the 

 brown margin again beginning at the fourth vein a little beyond the anterior cross-vein and extending 

 to the tip of the anal cell ; in the outer part of the anal angle there is usually a small hyaline spot, 

 reaching into the anal cell ; at the tip of the second vein a brown spot, sometimes connected with the 

 brown proximally, extending narrowly along the costa ; a small hyaline spot on the outer part of the 

 first submarginal cell, and another at the anterior angle of the first basal cell. Structure throughout 

 as in S. lacera. Length 9-12 millim. 



Eab. Mexico, Kio Papagaio and Acapulco in Guerrero (H. H. Smith). 



Seven specimens. In some of them the small hyaline spot in the anal angle of the 

 wings is wholly obsolete ; there may be a minute brown spot on the outer angle of 

 the anterior branch of the third vein. 



5. Stonyx lelia, sp. n. (Tab. V. fig. 2, 6 .) 



<S . Very much like S. melia, but with a conspicuous row of light yellow hairs along the noto-pleural suture 

 and back of the halteres. The hair of the pronotum is yellowish, and the white hairs on the sides of 

 the abdominal segments are more abundant, the distal segments being apparently covered with white 

 tomentum. The hyaline excision extending across the anal angle into the anal cell is much larger than 

 in any specimen of S. melia before me, and there is less or no brown within the third posterior cell. 

 Length 10-12 millim. 



Hah. Mexico, Chilpancingo in Guerrero (H. H. Smith). 



Four specimens. The contrast between the deep black and the light yellow hair on 

 the sides of the thorax is very marked, the species differing in this respect from 

 S. melia. 



