106 HEMIPTERA-HETEROPTERA. 
the species; and the vars. 6 and c are melanic forms which have either acquired (as is 
likely in most cases) that varietal coloration during life or, as may be possible, from 
much the same process observed in the genus Edessa, owe it (though much more un- 
frequently) to partial discoloration after death. 
Walker has not only described the three varietal forms under three specific names, 
but under two different genera. What seems inexplicable, however, is, in his descrip- 
tion of H. collaris, he writes “Dorsum of the abdomen black,” whilst the specimen 
described, the only one in the British-Museum collection, has the wings expanded and 
the upper surface of the abdomen exposed, which is bright red, with the usual luteous 
markings. 
CORYNOCORIS. 
Corynocoris, Mayr, Reise ‘ Novara,’ Hem. p. 95 (1866) ; Stal, Ofv. Vet.-Ak. Férh. 1867, p. 537. 
This genus is primarily distinguished from the last by the posterior femora, which are 
very slender towards the base, and in length pass the apex of the abdomen; and secon- 
darily by the antenniferous tubercles being spined externally. 
But two species are recorded, both of which are Nearctic. One of these, however, has 
been found in Mexico, and is here enumerated. 
1. Corynocoris distinctus. 
Crinocerus acridioides, H.-S. Wanz. Ins. vi. p. 20, fig. 575. . 
Merocoris distinctus, Dall. List Hem. ii. p. 419. 2*; Uhler, Hayden’s Surv. Montana, p. 400° ; Town. 
Glover, Ill. Ins. Ord. Hem. p. 47, tab. 1. fig. 17. 
Corynocoris distinctus, Uhler, Bull. U.S. Geol. & Geog. Surv. ii. p. 295°; Stal, En. Hem.i. p. 130.2; 
Walker, Cat. Het. iv. p. 120. 2°. 
Hab. Nortu America, Northern New York to Florida?, St. Louis! 4, Colorado? ?,— 
Mexico, Orizaba‘. 
This species is here included on the strength of a Mexican specimen contained in the 
British Museum. Prof. Uhler remarks :—“ Very variable in depth of colour, distinctness 
of marking, and in the shape and proportions of the head, antenne, and legs. In Mary- 
land it is often common in corners of fields adjoining woods, where the small weeds and 
shrubs grow luxuriantly. It may be swept from the plants in such places as late as to 
the middle of the month of October.” Townend Glover’s figure is useless’ for any 
practical purpose. 
Subfam. MICTINA. 
Mictidida, Stal, Ofv. Vet.-Ak. Forh. 1867, p. 535. 
This widely-distributed subfamily is well represented in the Nearctic and Neotropical 
Regions, of which Central America may be said to contain about half the number of 
genera, and somewhat more than one third of the number of species. 
