EVALCES. 93 
front; antenne rather short, moderately stout, similar in both sexes, joint 8 much longer than 2 and as 
long as 4;° prothorax moderately transverse, strongly narrowed in front, the sides much rounded, the base 
feebly bisinuate or subtruncate, the basal fovee quite shallow; anterior coxs contiguous, with very pro- 
minent trochantin ; intermediate coxe contiguous; tibial spurs equal in length, slender; penultimate joint 
of the anterior and intermediate tarsi very distinctly lobed, that of the posterior tarsi simple; first joint 
of the posterior tarsi shorter than the following joints united. 
Several species from Central America agree in the above particulars. In form the 
labial palpi and mandibles are quite different from those of Scraptia and its allies. 
Evalces agrees in some respects with Leconte’s description of Allopoda, but the latter 
is expressly stated to have the labial palpi formed as in Scraptia and Canifa; 7. e. very 
transverse, with the apical side longer than the others. All the species referred to 
Evalces have the head less truncate behind and narrower and more elongate in shape 
than in Scraptia &c.; three of them possess very well-marked male specific characters. 
The genus bears a deceptive resemblance to Anaspis. 
1. Evalces griseus. (Tab. IV. figg. 23,4; 23a, labium; 23, maxilla and 
maxillary palpus; 23 c, mandible; 23 d, cedeagus.) 
Elongate, narrow, piceous or piceous-brown, rarely testaceous with the prothorax slightly stained with piceous, 
the elytra in the dark examples sometimes with an indistinct piceo-testaceous vitta extending from the 
shoulder to the apex, sparsely pubescent, slightly shining. Head densely and rather coarsely punctured ; 
antenne and maxillary palpi varying in colour from piceous to fusco-testaceous; prothorax convex, nar- 
rowing from the base, densely, roughly, and moderately coarsely punctured; elytra very closely, finely, 
and somewhat coarsely punctured ; beneath finely and densely punctured, the metasternum more sparsely 
so; legs slender, fusco-testaceous or testaceous, the tibiz similar in both sexes; central sheath of the 
cedeagus of the male stout and cylindrical to the end, curved, and armed at the apex beneath with 
about four very sharp teeth directed backwards and above with a few bristly hairs, the apex blunt 
(fig. 23 d). 
Length (with the head extended) 3 millim. (¢ 9.) 
Hab. GuateMALa, San Gerénimo, Panajachel (Champion). 
Ten examples. In each of the five male specimens the cedeagus is extruded and 
exhibits the above-mentioned marked peculiarity: a similar armature is present in 
many Cantharide and Meloide. 
9. Evalces dentipes. 
Elongate, narrow, fusco-testaceous (the apical half of the elytra a little darker in one specimen), sparsely 
pubescent, moderately shining. Head closely and rather coarsely punctured, the eyes black; antenne and 
oral organs testaceous; prothorax not very convex, densely, finely, and somewhat roughly punctured, the 
sides almost straight behind; elytra closely and finely punctured; beneath testaceous, the venter a little 
darker ; legs moderately slender, pallid testaceous; anterior tibiz in the male armed on the inner side 
with a sharp triangular tooth about the middle; central sheath of the cedeagus of the male slender, very 
little curved, and furnished beneath with numerous bristly hairs. 
Length (with the head extended) 8-3; millim. (¢ 9.) 
Hab. Guatemaa, San Gerénimo, Paso Antonio (Champion). 
Three examples, two males and one female, two of which were captured in the low 
