8 HEMIPTERA-HOMOPTERA., 
8. Enchophyllum dubium, sp.n. (Tab. I. figg. 9, 9 a, 93.) 
Nigrum vel brunneo-nigrum ; pronoto in cornu sat longum leviter recurvum, apice supra viso haud dilatato, pro- 
ducto, maculis flavis duabus dorsalibus magnis (anticé majori) interdum confluentibus, carinis lateralibus 
postice vix indicatis vel totis deficientibus ; pedibus nigris, tarsis flavis. 
Of a black or brownish-black colour, with two large yellow patches on the back of the prothorax, of which 
the front one is the largest ; occasionally they are confluent; the anterior horn of the prothorax is rather 
long and slightly curved, not dilated at the apex, carinated at the sides, with the continuation of the 
carine on the hinder part of the prothorax absent or scarcely indicated; legs black, tarsi yellow. 
Long. 8-9 millim., cum tegm. 9-10 millim.; lat. max. 23-3 millim. 
Hab. Guaremata, Teleman in Vera Paz (Champion); Panama, Volcan de Chiriqui 
2500 to 4000 feet (Champion). 
As will be seen from the description, this species is somewhat intermediate between 
Enchophyllum and Enchenopa ; small specimens appear to do duty in some collections 
for E. lanceolata. Dr. Goding has kindly compared a specimen of it for me with his 
American species and returned it as new, and near his Enchophyllum rileyi: it is some- 
what variable in size and colour. . dubium is also allied to Hnchenopa albidorsum, 
but that species has a straighter pronotal horn and is differently coloured. An example 
from Chiriqui is figured. 
4, Enchophyllum trimaculatum. 
Membracis trimaculata, Stal, Stett. ent. Zeit. xxv. p. 68 (1864) *. 
Enchophyllum (Tropidocera) trimaculatum, Stal, Ofv. Vet.-Ak. Férh. 1869, p. 271%, 
Hab. Mexico}. 
I have not seen a specimen of this species, which appears to be unique in the 
collection of the Stockholm Museum ; it is described as “ V. fulice similis, sed thoracis 
cornu vix ullo.” 
ENCHENOPA. 
Enchenopa, Amyot et Serville, Hist. Nat. des Ins. Hémipt. p. 535 (1843); Stal, Kongl. Sv. 
Vet.-Ak. Handl. (Hem. Fabr.), Band viii. 1, p. 42 (1869). 
A considerable number of American species are contained in this genus, which is 
divided by St&l into three subgenera, Enchenopa, Campylenchia, and Tritropidia. The 
species belonging to Enchenopa proper are very closely allied to the subgenus J'ropido- 
cera of Enchophyllum, and it would perhaps be the best course to amalgamate the 
genera; the chief difference lies in the cessation or continuation of the lateral carine 
of the pronotum behind the horn, but this character is sometimes obscure. It is hard, 
however, to define or separate the genera allied to Membracis with any accuracy, the 
transition being almost complete from the large foliaceous type species of Membracis 
through Enchenopa, Tropidoscyta, and Erecthia to the small seed-like species of 
Bolbonota, which at first sight would certainly be considered to have no relation 
whatever with the group. 
