* 
_ TIRIDATES.—HOM AMUS.~ 19 
1. Tiridates mexicanus. 
Pachycoris mexicanus, H.-S. Wanz. Ins. iv. p. 3. f. 343 ; Germ. Zeitschr. i. 1, p. 89. 12. 
Pachycoris flavicinctus, H.-S. Wanz. Ins. iv. p. 8. f. 851; Germ. Zeitschr. i. a p. 163. 43. 
Tiridates mexicanus, Stal, En. Hem. i. p. 13. 
Hab. MEXIco. 
I have followed Stal in considering the two above forms as conspecific, but have been 
unable at present to examine specimens. | 
2. Tiridates rubro-cinctus. | 
Pachycoris rubro-cinctus, H.-S. Wanz. Ins. iv. p. 9. f. 852 ; Germ. Zeitschr. i. p. 108. 44, 
Agonosoma rubro-cinctum, Stal, Stett. ent. Zeit. xxiii. p. 83. 131. 
Hab. Mexico}. 
Although very dissimilar above in general markings and coloration to 7. mexicanus, 
I have had no opportunity of examining the structural characters of the two species, 
and therefore admit it here provisionally. St&l seems to have had doubts as to its 
specific character, as, although admitting it to that rank, he writes “ abdomine pedibus- 
que nigris a precedente divergens; an specifice distinctus ¢” | 
HOMAMUS. 
Homemus, Dallas, List Hem. i. p. 36 (1851) ; Stal, Ofv. Vet.-Ak. Férh. 1867, p. 494. 
This is generally a Nearctic genus. Several species have lately been described from 
that region; and more doubtless remain to be discovered. Three species have as yet 
been recorded from Central America; but one has also been received from Colombia, 
and two are common to the southern portion of the Nearctic fauna. 
The principal character of this genus is the produced anterior margin of the sternum 
concealing the base of the antenne. 
1. Homemus grammicus. 
Tetyra grammicus, Wolff, Ic. cim. v. p. 172. f. 166, excl. syn. 
Pachycoris parvulus, Germ. Zeitschr. i. p. 107. 53!; H.-S. Wanz. Ins. v. p. 54, f. 501. 
Homemus parvulus, Dall. List Hem. i. p. 836. 22; Stal, En. Hem. i. p. 143. 
Hab. Nortn America, Carolina 1, East Florida 2; Texas *.—MExico 3, 
Wolff, in describing and figuring the species as above, gave the locality as Africa 
(“ Hab. in Africa, Mus. D. D. Panzer”), thus following Fabricius, with whose Tetyra 
grammica he confounded his own species. They are, however, not congeneric—Stal, 
who had possibly examined the type, placing the 7. grammica, Wolff, in the genus 
Homemus, whilst the 7. grammica, Fab., belongs to the genus Odontotarsus. It is 
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