120 LAMELLICOENIA. 



Trox splendidus, Say, Boston Journ. Nat. Hist. i. p. 180 (1835) 4 ; Complete Writings, ii. p. 653. 

 Acanthocerus Icevistriatus, Casteln. Hist. Nat. Ins. Col. ii. p. 109 5 . 



Hab. Noeth America, United States 1 2 4 — Mexico 3 5 . 



Var. C. prionomus. A typo differt solum elytrorum margine prope humeros serrulato. 



Hah. Guatemala, Zapote [Champion). 



The variety, of which three examples only were taken by Mr. Champion in Guatemala, 

 agrees precisely with North- American specimens of C. aphodioides in its oblong form 

 and in the sculpture of its surface ; the sides of the thorax have three similar polished 

 elevations, and the apex of the elytra six carinas, viz. three parallel to the suture, and 

 three to the lateral margin, the broad sulci between the latter being marked with fine 

 chain strias in elegant pattern. In the variety the elytra have subrectangular shoulders, 

 and a very narrowly dilated margin, which for a short space near the shoulder is con- 

 spicuously, though finely, serrated. The colour of the elytra is brilliant brassy, almost 

 golden, and the underside of the body wit h the femora is reddish. 



3. Cloeotus reticularis. 



C. aphodioidi affinis ; differt thorace lateribus absque callis politis, scutello lsevi, elytris subtilius striato- 



punctatis, etc. 

 Long. 4 millim.* 



Hab. Mexico, Cordova (Salle). 



Of the same oblong form as C. aphodioides; brassy-black, with greenish-bronze and 

 aeneous reflections, the surface polished and with a changing milky-opaline lustre. Head 

 (vertex excepted) closely punctured ; clypeus broadly rounded, the edges reflexed ; genas 

 triangular, sublobate. Thorax transverse, quadrate, slightly narrowed anteriorly, the 

 sides nearly straight, the hind angles rectangular, submarginal impressed line entire, 

 near the anterior angles broader, its inner edges raised and thickened ; surface finely 

 and not very closely punctured, becoming nearly smooth behind, the lateral border 

 having a large oblong depression, thickly and finely flexuous-strigose, and without 

 polished elevations. Scutellum smooth, at the base a very few punctures, and within 

 the apex a shallow punctured fovea. Elytra with rows of short linear punctures not 

 impressed in strias, the lateral margin near the shoulder with 3 or 4 serrated denticu- 

 lations, the apex as in A. aphodioides with six carinas, the interstice 2 (from the suture) 

 being carinated to the apex, the interstices 3 and 4 having very short carinas, and 6, 9, 

 and 11 having carinas successively increasing in length, the broad sulci between the 

 three having fine wavy strias forming a chain-like pattern. Possibly only an extreme 

 variety of C. aphodioides. 



* Measurements of this genus and Acanilwcerus are of the insects in their rolled-up condition. 



