374 PHTTOPHAGA. 



In shape this apterous species agrees entirely with L. oopterus, Har., from Colombia, 

 and with L. concinnus, Baly ; from the former the punctuation of the thorax will at once 

 distinguish it ; other differences are also to be found in the long antennae [which are 

 only of half the length of the body in Von Harold's species]. In L. angusticollis the 

 antennae are as long as the body, the second joint is but little shorter than the third, 

 the following joint the longest ; the thorax is strongly narrowed near the base, its 

 surface covered at its posterior portion with distinct and oblong punctures, which 

 sometimes extend to the anterior portion as well, the spaces between the punctures 

 being slightly and more or less distinctly wrinkled; the elytra are convex, much 

 narrowed and pointed at the apex, and without a humeral callus, their punctuation 

 is strong and close (when seen under a high power), and the interstices are somewhat 

 rugose; the first joint of the posterior tarsi is of half the length of the tibiae. With 

 L. concinnus the present species cannot be confounded, on account of the uniform 

 colour of the antennae and the posteriorly narrowed thorax. Ten specimens were 

 obtained. 



4. Longitarsns chiriqnensis. 



Broad, ovate, dark fulvous, impunctate ; wingless ; third joint of the antennae longer than the seeond. 

 Length | line. 



Eab. Panama, Volcan de Chiriqui (Champion). 



Of much more broadly ovate shape than L. angusticollis ; shorter, and the upper 

 parts without punctuation ; the antenna? two thirds the length of the body, the third 

 joint being distinctly longer than the second (by which character the species may be 

 separated from L. oopterus, Har.), the terminal joints rather robust and of darker 

 colour. The thorax in L. chiriquensis is transverse [or at least not longer than broad], 

 and the elytra are without punctuation. Two specimens are before me. 



5. Longitarsus intermedins. 



Broad, ovate, fulvous ; the seeond and third joints of the antennae equal, short, the four following ones black, 

 the terminal joints flavous ; thorax scarcely broader than long, impunctate ; elytra impunctate, widened 

 at the middle, without humeral callus ; body wingless. 



Length | line. 



Eab. Panama, Volcan de Chiriqui (Champion). 



In shape L. intermedius almost exactly resembles L. chiriquensis, from which it is 

 principally distinguished by the structure and colour of the antennae, in which the 

 third joint is as short as the second. Whether the species is subject to variation I 

 am unable to say, as there is only a single specimen before me ; it is smaller than 

 L. oopterus, and from that species sufficiently well distinguished by the impunctate 

 elytra and colour of the antennae. 



