EURYOPA. 109 
of an upper and inferior, tubular or, rather, stylose plate ; but to which sex to refer the 
two specimens before me I am at a loss. 
There is no appearance of luminosity; but it is to be noticed that the whole under- 
side is pale yellow or fuscous. 
2. Kuryopa singularis. (Tab. VI. fig. 4.) 
Fusca, nitida; capite, pedibus et corpore subtus flavis, antennis breviter bipectinatis, elytris et thorace longi- 
tudine eequalibus. Long. 7 millim. ¢? 
Hab. GuatemMaa, Cerro Zunil (Champion). 
Head suborbicular, depressed, obsoletely punctured, pale yellow; mandibles, sides, 
and base pitchy; antenne pale, joints 3-10 (?) each with two short lamellar branches ; 
the joints are cylindrical, longer than wide, the lamelle equal to two joints in length. 
Palpi with the apical joint short and wide, obconic. Thorax fuscous or pitchy, shining, 
obsoletely punctate, longer than wide, the base produced in the middle, anterior angles 
deflexed, posterior obtuse, not prominent; sides with fine pubescence. Llytra nearly 
half as long as the abdomen; suture divergent, rather rough, and darker towards the 
apex. Wings ample, reaching the apex of the abdomen. Legs clear yellow; tarsi 
filiform, fourth joint not bilobed; abdomen yellow, apical plates pitchy. 
The very singular insect described above is allied to a species I have received from 
Texas under the name Mauastinocerus texana, Leconte. Neither of them, however, can 
belong to Mastinocerus, Solier in Gay’s ‘History of Chili, iv. p. 440, which has very 
long antennz with long branches, the tenth joint being of a singular form, and the 
eleventh divided. | 
3. Kuryopa brunnea. 
Brunnea, nitida, antennis breviter bipectinatis fuscis. Long. 4 millim. 
Hab. Guatemata, Cahabon (Champion). 
Allied to E. singularis, from which it differs in being very much smaller, more 
shining, and of a uniform red colour, the antenne and palpi being darker. The head 
is quite glabrous; the thorax also quite smooth, subquadrate, the base raised in the 
middle, sides a little narrowed towards the front. LElytra thin and semitransparent, 
roughish. 
A single example only has been sent. 
4, Huryopa nigra. 
Nigra, subopaca ; capite rufo, mandibulis piceis, rugose punctato, antennis nigris breviter bipectinatis. Long. 
6 millim. 
Hab. GUATEMALA, Capetillo; Panama, Volcan de Chiriqui (Champion). 
The characters which distinguish this from the two preceding species are its generally 
