Coleopterological Notices, III. 161 



The maxillary palpi differ somewhat conspicuously in the sexes, 

 the fourth joint being more elongate in the male, with the inner 

 side much shorter than the apex ; in the female the inner side is 

 subequal to the apex. Less marked sexual differences in the palpi 

 are observable also in some other genera, such as Isomira and the 

 European Cteniopus, this character apparently being especially 

 developed in the genera with simple tarsi. 



Some of the Central American species assigned to Cistela by Mr. 

 Champion, are said to have the anterior tarsi more or less dilated, 

 and these may possibly find a more fitting place as a separate genus 

 allied to the present one, but differing in the serrate antennae. Cis- 

 tela fragilicornis should, almost undoubtedly, be placed in Cap- 

 nochroa. 



€. fuliginosa Melsh.— Proc. Ac. Phil., Ill, 1846, p. 59.— Elongate-ellip- 

 tical, strongly, very gradually pointed behind, moderately convex, dark piceo- 

 castaneous throughout, dull, the elytra polished ; pubescence extremely short, 

 dense on the pronotum, sparse on the elytra. Head finely, rather densely 

 punctured, the eyes moderate ; antennae long, rather slender, feebly com- 

 pressed, filiform. Prothorax from three-fourths wider, to nearly twice as wide 

 as long, the apex less than one-half as wide as the base, truncate ; base trans- 

 verse, broadly, rather feebly bisinuate, the basal angles right ; sides parallel 

 and nearly straight in basal half, then very strongly convergent and broadly 

 arcuate to the apex ; disk very feebly convex, more or less explanate laterally, 

 very finely but strongly, densely punctate, the punctures distinctly but nar- 

 rowly separated ; basal foveae small but distinct. Elytra feebly, gradually 

 dehiscent toward apex, rather more than four times as long as the prothorax, 

 and, in the middle, quite distinctly wider, very gradually acute behind, each 

 elytron narrowly rounded at tip ; sides broadly, feebly arcuate, the humeri 

 obliquely rounded to the base of the prothorax ; disk with fine, deeply 

 impressed series of moderately fine distinct punctures, the intervals con- 

 vex, minutely and not very closely, confusedly punctate. Abdomen polished, 

 minutely, rather sparsely punctate, somewhat more closely so toward the 

 middle in the male. Legs and tarsi long, very slender in both sexes, the basal 

 joint of the posterior as long as the remainder. 



Male. — Eyes separated by just visibly less than their own width ; antennae 

 two-thirds as long as the body, the fourth joint fully twice as long as the two 

 preceding together, third slightly longer than wide ; anterior tarsi longer than 

 the tibiae, extremely feebly dilated, densely clothed beneath with short flavate 

 hairs which bristle laterally in the form of fimbriae ; fifth segment with a rather 

 small median sinuation which is much wider than deep, the edge bordering 

 it strongly inflexed ; genital armature deeply bilobed, the lobes large, long, 

 flattened, slightly twisted but not bent downward, excavated along their inner 

 face, their apices rounded. 



