302 SUPPLEMENT. 



Occiput thickly whitish-pollinose ; no bristles on the upper part. Antennae reddish-yellow ; style 

 bristle-like, distinctly longer than the third joint. Lateral margins and the posterior part of the 

 mesonotum and the pleurae wholly white-pollinose ; mesonotum otherwise dark opaque brown, as though 

 marked with three confluent stripes. Abdomen very slender, deep brown or black, not shining, the 

 lateral and posterior margins of the segments more or less reddish ; hypopygium small. Legs yellow or 

 reddish-yellow ; the extreme tip of all the femora, the apex of the hind tibiae, two spots on the hind 

 femora, and an incomplete ring on the proximal part of the hind tibiae, brown ; tip of hind tarsal joints 

 brown or brownish ; empodia wanting ; hind femora moderately thickened on the distal part. "Wings 

 hyaline ; fourth posterior cell narrowly contiguous at the base with the second basal cell ; furcation of 

 the third vein about opposite the distal end of the discal cell ; anterior cross-vein a little beyond the 

 proximal end of the fourth posterior cell. Length 9-12 millim. 



Hob. Mexico, Dos Arroyos, Tierra Colorada, Acaguizotla, and La Venta in Guerrero 

 (H. H. Smith). 



Eighteen specimens. This species bears a considerable resemblance to the preceding, 

 but the great difference in the size of the hypopygium, among other particulars, will 

 easily distinguish them. 



DICRANUS. 



Dicranus, Loew, Bemerk. uber Fam. Asil. p. 13 (1851). 

 Macronyx, Bigot, Ann. Soc. Ent. Er. 1857, p. 549. 



l. Dicranus jaliscoensis, sp. n. (Tab. v. fig. 15, s .) 



<$ 2 . Front and face light yellow, with a whitish-yellow-pollinose covering; mystax yellowish- white. Antennse 

 yellow ; the third joint red, with some black hairs on its upperside. Beard shorter and less abundant 

 than in D. rutilus, Wiedem., yellowish-white or white. Mesonotum yellowish-brown, the humeri and 

 the lateral margins ochraceous-yellow ; on the inner side of each humerus, broadly in front, but narrowly 

 behind, and reaching to about the middle of the mesonotum, there is a dark brown stripe, between which 

 there is a smoother geminate stripe : bristles black. Scutellum yellow. Pleurae thickly yellowish-grey- 

 pollinose. Abdomen brownish-red, opaque, the posterior segments blackish, the anterior ones red (in 

 some specimens it is dark brown throughout, in others dark red) ; lateral margins of all the segments 

 thickly grey-pollinose. Legs yellow, sometimes wholly so, but usually with the hind femora or all the 

 femora along the upperside, and the hind tibiae or all the tibiae along the outer side, black ; distal hind 

 tarsal joints more or less blackish at their tips. Wings hyaline : all the cells opening on the distal part 

 of the wing, and the interior of the discal and the fourth posterior cells, with grey clouds. Length 

 27 millim. 



Hab. Mexico, San Bias, Santiago Iscuintla and Guadalajara in Jalisco {Schumann). 



Five specimens. The three species of this genus hitherto known are all from the 

 Argentine Republic or Brazil. I have compared the Mexican examples with others of 

 D. rutilus from Brazil, and find that they agree closely in their structural characters. 

 From both this and D. longiungulatus the present insect differs in the colour and 

 vestiture of the third antennal joint, and in the absence of yellow-haired cross-bands 

 on the abdomen. From B. tucma, Lynch, with which D. jaliscoensis agrees best, it 

 will be at once distinguished by the opaque colour of the abdomen : the face, too, is 

 not golden-yellow. 



