44 HEMIPTERA-HETEROPTERA. 
Subfam. DISCOCEPHALINA. 
Discocephalida, St&l, Hem. Fabr. i. p. 17 (1868). 
Discocephalina, Stal, En. Hem. ii. p. 4 (1872). 
At present this subfamily includes eighteen genera, all of which are peculiar to the 
Neotropical Region, excepting one genus, which contains a species which is common 
to both the Neotropical Region and Europe. Six of these genera are represented in 
Central America. 
DRY PTOCEPHALA. 
Dryptocephala, Laporte, Ess. Hém. p. 56 (1832); A. & 8. Hist. des Hém. p. 118 (1843); Fieb. 
Rhynch. p. 8 (1851); Dall. List Hem. i. pp. 131, 148; Stal, Ofv. Vet.-Ak. Férh. 1867, p. 499 ; 
En. Hem. ii. p. 4 (1872). 
Storthia, Perty, Del. p. 215 (1834); H.-S. Wanz. Ins. vii. p. 41 (1844). — 
This genus is well marked and peculiar from the others here enumerated by the 
head, which is lobate or deeply divided at the apex, and is provided with a spine on each 
side in front of the eyes; the lateral margins of the pronotum are ampliated. Nine 
species are enumerated, all common to the Neotropical Region, but none of which have 
hitherto been recorded from Central America. One of these is now included. 
1. Dryptocephala obtusiceps. (Tab. IV. fig. 23.) 
Dryptocephala obtusiceps, Stal, En. Hem. ii. p. 4. 4}. 
Hab. Panama (coll. Dist.).—Co.omB1a, Bogota!. 
I have felt no hesitation in identifying this insect from Stal’s description, not having 
seen the type. The eroded condition of the lateral margin of the pronotum allies it to 
D. punctata and D. livida, as Stal has clearly pointed out, from which it seems well 
separated by the structure of the lateral lobes of the head. 
DISCOCEPHALA. 
Discocephala, Laporte, Ess. Hém. p. 57 (1882); A. & S. Hist. des Hém. p. 122 (1843); Dallas, List 
Hem. i. pp. 181 et 146 (1851); Stal, Ofv. Vet.-Ak. Forh. 1867, p. 499; En. Hem. ii. p. 5 
(1872). , 
Platycarenus, Fieb. Eur. H. pp. 77, 826 (1861). 
This genus may be differentiated from the preceding one by the following cha- 
racters :—the ampliated head, which at the base is as broad or broader than the base 
of the scutellum ; and the length of the first joint of the rostrum, which, inserted 
towards the base of the head, about reaches the anterior coxe. ‘The species are all 
Neotropical; one is also found in Europe; and four are common to Central America. 
Stil enumerates altogether fifteen species; and this is probably about the extent of the 
genus. Walker (Cat. Het.) has described ten other species; but the only Central- 
American one proves to be of synonymic value; and it is possible that the others will 
have to be estimated in the same manner. 
