DISCOTENES.—EUCYCLOTROPIS. 311 
5. Discotenes affinis, sp.n. (Tab. X. fig. 16.) 
3 2. Closely allied to the preceding insect, but differs in the following characters :— Markings of head and 
pronotum less distinct, line of head and rostrum not forked; rostrum more flat above; prothorax less 
rounded at the sides, widest at the carina, mesial tubercles less high, impression less distinct; basal 
tubercle of elytron not so high, median and anteapical ones vestigial, indicated by little more than spots 
of black erect pubescence ; pygidium almost or entirely grey. 
Length 4 millim. 
Hab. Mexico, Juquila (Hége); Guatemata, Capetillo [type], Calderas, Cerro Zunil 
(Champion). 
Four specimens only, which vary somewhat in the size of the elytral tubercles, these 
being less developed in the two females than in the two males. 
V. EUCYCLOTROPIS. 
Eucyclotropis, Jordan, Nov. Zool. xi. p. 273 (1904) (type: pustwlata, from Brazil). 
Range: South and Central America. 
3 2. Rostrum short, stout, broader than long, flattened above, with nearly straight sides. Antenna] groove 
open. Antenne not prolonged in g ; the three segments of the club closely applied to each other. Eye 
lateral, entire, sometimes truncate anteriorly. Carina of pronotum almost evenly curved from side to 
side. Prosternum very short. 
The five species known to me (inclusive of the two new ones described below) exhibit 
considerable divergence in the development of the antenn and other parts, and will 
probably be separated into two genera when more species are found. However, the 
genus as it stands can easily be recognized by the short rostrum with the uncovered 
antennal groove, the lateral, entire eye, the three-segmented antennal club, and the 
evenly curved prothoracic carina. Its nearest ally among the Central-American genera 
is Discotenes. 
a. Prothorax with mesial tuft, elytron tuberculate . . . . [pustulata, Jord. (1904) ; Brazil.| 
Prothorax without mesial tuft, elytron regularly striped with grey; third 
antennal segment much shorter than second and also shorter than the 
fourth . . 1. ee ee ee ee ee ew ee.) G striata, Jord. (1904); Bahia. ] 
Prothorax without mesial tuft; third segment of antenna longer than second . 8. 
b. Side of prothorax carinate from antebasal carina to apex. . - . » - + Species No. I. 
Prothorax cylindrical in anterior half . . . . . 0. ee ee ee 
c. Elytron with broad and high basal tubercle . . . . . os. . « « « « Species No. 2. 
Elytron without basal tubercle, the base strongly depressed . . . . . « « Species No. 3. 
1. Eucyclotropis pylades. (Tab. X. fig. 17 *.) 
3. Eucyclotropis pylades, Jordan, Nov. Zool. xi. p. 274. n. 65 (1904) °. 
In the type, which is a ¢, the antennal segments 7-11 are missing. In the 9 segments 7 and 8 are 
* The generic name is incorrectly written Hncyclotropis on the Plate. 
