782 SUPPLEMENT. 
This species is smaller than 7’. grandis, and easily distinguished by the colour of the legs, 
and the greater convexity of the upper surface ; the mesosternal lamina, moreover, is more 
largely developed, its anterior portion being more prominent, and flavescent in colour. 
Only two examples have been met with; they are females, and the abdominal structure 
is similar to that of the same sex of 7. grandis, except that the lacinize are longer and 
more slender. 
TACHINUS (p. 309). 
Tachinus alticola (p. 310). 
To the locality given, add :—Mzexico, Huitzilac, Amecameca (Hoge). 
The two examples now received from Mexico being females, while the original type 
from Guatemala is a male, some doubt exists as to this determination. 
TACHYPORUS (p. 311). 
5. Tachyporus tarsalis. 
Niger, nitidus, prothoracis lateribus, elytrorum apice, antennis tarsisque testaceis. 
Long. 43 millim. 
Hab. Mexico, Salazar (Hége). 
Antenne elongate, thickened towards the extremity. Head and thorax very shining, 
black, the latter broadly testaceous at the hind angles, this colour extending forward 
along the sides and also along the base. LElytra longer than the thorax, finely punc- 
tate and pubescent. Hind body black, finely punctured. Legs black, the tarsi pallid 
yellow. | 
This species bears considerable resemblance to 7. argutus, but is readily distinguished 
by the colour of the legs. Only one specimen has been received 
MEGACRONUS (p. 317). 
4 (a). Megacronus mexicanus. 
Gracilis, rufo-testaceus, pectore, elytris abdomineque apice excepto fuscescentibus; antennis parum crassis; 
elytris regulariter, seriatim fortiter punctatis. 
Long. 5 millim. 
Hab. Mexico, Sayula in Jalisco (Hoge). 
Antenne rather short and not stout, but at the apex considerably thickened ; joints 
9 and 10 transverse. Head and thorax pale red. Elytra longer than the thorax, 
each with six or seven regular series of setigerous punctures. Hind body sparingly 
punctured, pale red at the extremity. 
There is little to distinguish this species from I. meridionalis, except differences in 
colour, which are not very important, and the much more slender antenne. 
