Mexican and Central American Chauliognathinae. 133 



3. Daiphron lineatmn. (Plate III, fig. 1, <^.) 



Daiphron ochraceum, var., Gorh., Biol. Centr.-Am., 



Coleopt. iii, 2, p. 277. 

 Daiphron ochraceum, var. lineatum, Pic, Melanges exot.- 

 entomologiques, fasc. iv, p. 6 (Sept. 1912). 



Very like D. lyciforme var. ochraceum, Gorh., but much smaller; 

 the prothorax with a narrow black median vitta (as in typical 

 D. lyciforme) ; the antennae much shorter in both sexes, the inter- 

 mediate joints greatly widened and more strongly serrate (as in 

 D. crassicorne) ', the prothorax narrow, subparallel in ^, sub- 

 campanulate in $, the margins narrowly reflexed. 



Length (excl. head) 11|-12 mm. {^ $.) 



^. Aedeagus : median lobe obliquely bent, simply sinuate on the 

 upper edge towards the apex, the latter feebly produced ; left 

 lateral lobe very elongate, slender, almost straight, feebly hooked 

 at the tip ; right lateral lobe nearly as long as the left, compressed, 

 rather broad, angularly dilated just beyond the middle, and with 

 the apex sharply bifurcate, the inner angle produced into a strongly 

 curved, acute hook. Plate IV, figs. 3, 3a. 



Hab. Panama, Bugaba. 



The above description has been taken from a pair in 

 the " Biologia " collection, one or two others having now 

 passed into the hands of M. Pic. The sharply bifurcate 

 shorter right lateral lobe of the aedeagus is characteristic, 

 separating D. lineatum at once from the same sex of 

 D. lyciforme. 



4. Daiphron crassicorne. 



Daiphron crassicorne, Gorh., Biol. Centr.-Am., Coleopt. 

 iii, 2, p. 67, pi. 5, fig. 24 (?). 



(J. Aedeagus : median lobe curved, feebly produced at the apex ; 

 left lateral lobe extremely elongate, slender, sinuate, narrowed at 

 the tip ; right lateral lobe short, compressed, obliquely bent, slightly 

 hooked at the apex. Plate IV, fig. 4. 



Hab. Guatemala, Zapote, Pacific slope. 



Described by Gorham from a pair from Zapote. The 

 great disparity in the length of the lateral lobes of the 

 aedeagus brings this species near Chauliognathus proteus. 



Ch AULIOGN ATHUS . 



Chauliognathus, Hentz, Trans. Am. Phil. Soc, new series. 



