128 HEMIPTERA-HOMOPTERA. 
1. Picumna varians. (‘Tab. XII. figg. 28, 28 a.) 
Picumna varians, Stal, Stett. ent. Zeit. xxv. p. 52°. 
Hab. Mexico! (Mus. Holm. & Mus. Vind. Ces.), Teapa in Tabasco and Atoyac in 
Vera Cruz (H. H. Smith), San Lorenzo near Cordova (Trujillo); GuatemMaLa, San Juan 
in Vera Paz (Champion) ; Panama, Bugaba, Volcan de Chiriqui (Champion). 
Some specimens of this species are almost unicolorous, brownish or castaneous, while 
others have the tegmina more or less regularly variegated with black or fuscous. The 
examples from the Volcan de Chiriqui have the tegmina almost entirely dark, with 
the exception of a light transverse band across the centre, more or less interrupted 
at the suture, and on this band there are one or two distinct small black spots; one 
from Bugaba is intermediate in colour between these and the Mexican specimens. 
We also have a small Picwmna from Lanquin, Vera Paz, which may be a variety of 
this species; it is, however, discoloured and not quite perfect. A specimen from Teapa 
is figured. 
2. Picumna ovatipennis. (Tab. XII. figg. 29, 29a; 30, var.) 
Issus ovatipennis, Walk. List of Homopt. Ins., Suppl. p. 887. 
Hab. Mexico (Sallé!), Atoyac in Vera Cruz (Schumann), Omilteme in Guerrero 
8000 feet (H. H. Smith); Guaremata, Panima, Teleman, Chacoj, Sabo, Senahu, San 
Juan, San Geronimo, and Tamahu, all in Vera Paz (Champion); Panama, Volcan de 
Chiriqui (Champion). 
This is also a very variable species, both in size and colour: the largest specimens 
are 7 mm. in length and the smallest under 5 mm.; the colour of the tegmina varies 
from black, with small testaceous spots at the sides, to testaceous or greenish-testaceous, 
with a few irregular small dark spots, or darker testaceous, with lighter markings at 
the sides. We figure a specimen from the Volcan de Chiriqui and a variety from 
San Gerdnimo. 
3. Picumna mexicana. 
Picumna mexicana, Stal, Stett. ent. Zeit. xxv. p. 53°. 
Hab. Mexico (Mus. Holm. et coll. Signoret'). 
I have not seen a specimen of this species, which is distinguished from the preceding 
by having the vertex transverse, the tegmina shorter and less parallel, and the wings 
smaller; in P. varians the vertex is small and distinctly subquadrate. 
4. Picumna venosa, sp.n. (Tab. XII. figg. 31, 31a.) 
Sat brevis, testacea vel fusca, venis tegminum crassis, nigrescentibus ; capite lato, vertice vix transverso, 
fronte latitudine longiori, lateribus leviter rotundatis ; pronoto producto; scutello distincte tricarinato ; 
tegminibus abdominis apicem paullo superantibus; pedibus testaceis, ad partem fuscis. 
