362 SEBKICOKNIA. 



of variation. This species is perhaps nearest allied to M. polygrammus, Cand., though 

 very different in coloration. The insect is unknown to Dr. Candeze. 



5. iEolus trimaculatus. (Tab. XVI. fig. 2.) 



Elongate, narrow, rather convex, shining, finely pubescent ; testaceous or ferrugineo-testaceous, the head with 

 the posterior half fuscous or black • the prothorax with a discoidal patch or median vitta, not reaching 

 the base or the apical margin, black ; the elytra witb a triangular scutellar patch (extending to the 

 scutellum), and a transverse mark or spot on the disc at about one-third from the apex, sometimes 

 reaching the suture, black, the base on either side of the scutellum dilute testaceous ; the antennae 

 and under surface ferruginous, the legs flavous. Head convex, ratber coarsely punctured, the frontal 

 carina rounded and moderately prominent ; antenna? reaching the hind angles of the prothorax, joints 2 

 and 3 short, subequal, the two together about as long as 4. Prothorax as long as broad, narrowed in 

 front, the sides rounded anteriorly and parallel behind ; the hind angles strongly, acutely produced, 

 carinate at the sides above, the carina extending forwards to the middle of the prothorax and joining the 

 marginal one at the tip ; the surface thickly, rather coarsely punctate. Elytra about twice as long as the 

 prothorax, narrowing from the middle, conjointly rounded at the apex ; rather finely, but sharply 

 punctate-striate, the interstices flat on the disc, feebly convex at the sides, and roughly punctured. 



Length 4|-6|, breadth lg-2 millim. 



Hah. Panama, Bugaba, David, and Caldera in Chiriqui [Champion). 



Four examples, varying greatly in size. This insect resembles Jfi. signatipennis, 

 Cand., from Guiana, but it is narrower, and without the distinct, oblique, additional 

 carina within the hind angles of the thorax, the supra-marginal carina not abbreviated 

 behind ; it also has the head infuscate behind, the thorax with a discoidal black patch or 

 vitta, and the scutellar black mark more extended. In one specimen these markings are 

 very much reduced in size ; in the other three the elytral markings are connected along 

 the suture. JE.flamis, Fleut., from Venezuela, also resembles the pale form in colour. 



6. -ffiolus testudineus, (Tab. XVI. figg. 3, 3 a.) 



Moderately elongate, shining, finely pubescent; the head piceous or black, testaceous in front and at the sides; 

 the prothorax piceous or black, with a large triangular patch on either side behind, extending forwards 

 along the margins to the apex, testaceous ; the scutellum piceous ; the elytra with a short stripe extending 

 down the suture at the base, a rather broad stripe on the disc before the middle, a short narrow stripe at 

 the sides in front, and a large, broad, common cruciform mark extending from the middle to the apex, 

 these markings sometimes connected, piceous or black ; the antennae, legs, and under surface testaceous. 

 Head convex, thickly punctured, with a short smooth carina on the vertex, the frontal carina rounded 

 and moderately prominent ; antennae about reaching the hind angles of the prothorax, joints 2 and 3 very 

 short, equal, the two together not so long as 4. Prothorax as long as broad, narrowed in front, the 

 sides rounded anteriorly and feebly sinuate behind; the hind angles strongly, triangularly produced, 

 acute, finely carinate at the sides above, the carina extending forwards to beyond the middle of the pro- 

 thorax, and joining the marginal one at the tip ; the surface thickly, finely punctate. Elytra twice the 

 length of the prothorax, narrowing from about the basal third, conjointly rounded at the apex ; finely 

 punctate-striate, the striae becoming deeper and more coarsely punctured towards the sides ; the interstices 

 flat on the disc, feebly convex at the sides, roughly punctured. 



Length 5-6, breadth 1^-2$ millim. 



Hab, Guatemala, Paso Antonio (Champion). 



Two specimens, from the banks of the lagoons near the Pacific coast. This species 



