7ieio Species of Fediwlix. 379 



The head is evenly and rather strongly punctured, with 

 much less distinct punctuation on the clypeus ; the clypeus 

 has the angles of the emargination distinctly but slightly 

 dentiform ; halfway between this angle and the posterior 

 angle there is a very slight sinuosity. The thorax is evenly 

 convex, without any swelling in front, a little constricted at 

 the base, arcuately narrowed at the anterior angles, evenly 

 and strongly punctured ; at halfway towards the side about 

 seventeen punctures may be counted in a line from the front 

 to the posterior margin ; the punctures are deep, separated 

 from each other by about one half the diameter of a puncture. 

 The elytra have the strife rather fine, with the punctures in 

 them not very close together ; the first interstice is rather 

 closely punctured, the second is irregularly punctured for the 

 basal half and then (like the other interstices) has two lines ; 

 these punctures are rather small, and leave a rather wide 

 smooth space in the middle of the interstice ; below the 

 shoulder there is a line of about five small shining tubercles, 

 and on the ninth interstice a longer line of more distant 

 tubercles ; these tubercles are visible when viewing the insect 

 from above. 



Aphengium. 



I have just had an opportunity of examining the type of 

 Aphengium seminudum, Bates (Biol. Centr.-Amer., Coleopt. 

 ii. 2, p. 42), and it appears to have been placed in this genus 

 by an oversight. In characterizing the genus Harold says, 

 " Tarsorum posticorum articulus primus sequenti longitudine 

 multo longior ; pygidium rectum. Segmenta abdominalia 

 connexa^' (Col. Hefte, iii. p. 54). A. seminudum has the 

 abdominal segments free ; the pygidium is completely turned 

 under, so that its apex is directed forwards, and Mr. Bates 

 observes, " The short and broad, compressed and subtrian- 

 gular tarsal joints are a remarkable distinguishing feature. 

 The anterior cavity of the prosternum is exceedingly deep." 

 These characters appear to me to conform more with Bdelyrus^ 

 Harold (Col. Hefte, v. p. 97), of which Harold says : " Clypeo 

 antice angustato et breviter bidentato. Prosternum antice 

 profundissime foveolatum. Segmenta abdominalia suturis 

 distinctis. Pygidium contractum et abdomini appositum. 

 Tarsi postici dilatati, compressi, articulis latitudine sensim 

 decrescentibus." The clypeus has a projection in the 

 middle, and in fresh specimens this is slightly bidentate ; 

 this seems to agree with Harold's character. 



