DISCODON. 83 
Rather variable both in comparative width and colour, but generally distinguished 
among the Central-American Telephoride by the broad thoracic vitta, with a short 
lateral transverse branch below the middle of the disk, which at times appears like a 
spot in the broad yellow margin, united to the black of the disk. In most of the 
specimens which I refer to this species the hind angles of the thorax are distinct and 
nearly right angles; in some, however, they are more obtuse and rounded. The 
external resemblance to the European Telephorus obscurus, Linn., is rather striking. 
This species, with several others which I at first referred to Telephorus, has the 
middle claws of the male not finely split, but with a lobe very similar to that of the 
front pair, while the hind pair have the claws with the lobe produced so as to give the 
idea of their being bifid. The apical segment of the abdomen iscleft as in other species ; 
the two lobes have their suture somewhat open at the base. In the specimens with 
pale margins to the elytra the sides and apex of the abdomen are often yellow. 
In some specimens from Juquila the elytra are ampler than usual, and the hind 
claws of the male are less distinctly lobed; but I do not think they pertain to a 
distinct species. 
In some remarkably stout and robustly-built female specimens from Cuernavaca, 
Oaxaca, and other parts of Mexico the apical segment is apparently contracted at the 
apex, and with the pygidial plate longitudinally compressed (perhaps only in drying), 
so as to form a sort of gutter. There is a variety of this stout form which has the 
thorax and base of the legs and greater part of the abnomen, and in one example even 
the elytra, yellow. This latter is a single specimen taken at Cerro de Plumas by 
Hoge. 
12. Discodon perplexum. 
Nigrum ; elytris subopacis, ampliatis; prothorace aurantiaco, nigro-vittato; abdomine flavo, basi fusca. Long. 
15 millim. 4. 
Mas prothoracis margine juxta angulos posticos incisura sat profunda ; unguiculis internis anticis et externis 
intermediis lobatis, posticis externis fissis. 
Hab. Mexico, Misantla (Hége). 
There being only two male specimens which, at present, I can refer to this species, I 
think it may possibly prove to be the male of the species described by me as Telephorus 
picticollis. It is larger, and the elytra especially: wider, than any Discodon at present 
described. sab: 
The head is yellowish in front; but the apex of the mandibles, the palpi, and mouth 
are dark fuscous. The thorax has no angles in front, the margin being rounded to 
meet the sides; the hind angles are distinct, but not sharp, and, in the male, are 
detached from the lateral margin by a rather deep incision. The abdomen has all the 
seements margined, and the three last entirely yellow, the apical one being divided, the 
lobes being closely joined, a little open at the apex. The elytra are finely coriaceous, 
M 2 
