HEMIPTERA-HETEROPTERA, 401 
ERLACDA. (To follow the genus Cholula, p. 211.) 
Erlacda, Signoret, Aun. Soc, Ent. Fr. (4), iii. p. 567 (1864) ; Stal, En. Hem. iv. p. 144 (1874), 
This genus was founded for the reception of a single Chilian species, and the Mexican 
one I here described agrees in all respects with the generic diagnosis, and also in 
general form and appearance with the Chilian type, save by the length of the first joint 
of the antenne, which in that species scarcely reaches the apex of the head, but 
which in the species I now describe passes the apex by quite two-thirds its length. 
Although the length of the first joint of the antenne is doubtless a good generic 
character in differentiating this difficult group, I have refrained from adding another 
genus to those I have already been compelled to propose. 
1. Erlacda (?) insititia, n. sp. (Tab. XXXV. fig. 8.) 
Black ; apical joint of antenne: (excluding base and apex), intermediate and posterior legs (excluding apices 
of femora, bases and apices of tibia, and the apices of the tarsi), basal half of lateral margin of corium 
and a spot near apex of same, and a spot at base of lateral margin of membrane pale ochraceous ; anterior 
tibiee pale brownish. Membrane black, not reaching the apex of the abdomen. Posterior lobe of the 
pronotum and the corium coarsely punctate. Antenne with the second joint slightly longer than the 
third, first and fourth joints subequal in length. The head, lateral areas of the pronotum, and anterior 
femora are prominently setose; the anterior femora are longitudinally and robustly spined beneath, 
Long. 8 millim. 
Hab. Mexico, Amula in Guerrero 4600 feet (H. H. Smith). 
We have received a single example of this well-marked species. 
PEPHYSENA (p. 211). 
Pephysena levis (p. 211). 
To the localities given, add:—Mexico, Teapa in Tabasco (H. H. Smith). 
PRYTANES, gen. nov. (To follow the genus Pephysena, p. 212.) 
Pronotum with the anterior lobe globose and rather more than twice the length of the posterior lobe, which has 
its posterior margin concavely sinuate. Head inserted to the eyes; antenne slender, apical joint incras- 
sated, basal joint passing apex of head and shorter than the second joint; scutellum with a central 
carination; corium very coarsely punctate, the lateral margins convex, apices rounded and not quite 
reaching apex of abdomen. Membrane absent or very rudimentary. Anterior femora strongly incras- 
sated and spined beneath. 
This genus is allied to Carpilis, Stal. 
1. Prytanes globosus, n. sp. (Tab. XXXV. fig. 9.) 
Head black; antenne ochraceous, the apical joint fuscous ; pronotum with the anterior lobe castaneous, the 
posterior lobe ochraceous, with three black fasciw, and its lateral margins levigate and ochraceous ; 
scutellum black, with the apex ochraceous; corium ochraceous, with dark punctures spotted with black 
on apical half; upper surface of abdomen as seen beyond corium reddish-ochraceous. Body beneath 
BIOL. CENTR.-AMER., Rhynch., March 1893. 51 
