MYCOTEETTJS. 53 



Very ovate, narrowed behind almost from the shoulders to the apex of the elytra, 

 very finely punctured, and having the punctured striae almost obsolete ; entirely of a 

 fine chestnut-red, with the exception of the antennas, of which the seven apical joints 

 are black. The third to the sixth joints of the antennae are elongate; the seventh 

 joint is triangular and forms the beginning of the club, the latter being in consequence 

 long and laxly articulated. The whole upper surface, but especially the elytra, has a 

 nacreous reflection. This insect is labelled Mycotretus luteipes, Lac, in the Salle 

 collection, but does not accord with the description of that species. I have examined 

 Crotch's type, and it is clearly conspecific with our insect. About a dozen examples in 

 all are before me. 



16. Mycotretus sallsei. (Tab. IV. fig. 2.) 



Mycotretus Sailed, Crotch, Cist. Ent. i. p. 452 \ 

 Eab. Mexico l , Toxpam (Salle), Cordova (Edge). 



This fine species is easily recognized by the thorax having three spots placed in a line 

 transversely, as in M. spadiceus. M. sallcei is equal in size to that insect, but is distin- 

 guished from it by the large black patch on the basal half of the elytra. Very few 

 specimens have come under my notice. 



17. Mycotretus spadiceus. (Tab. III. figg. 16, 17.) 



Oblongo-ovatus, antice posticeque angustatus, parum convexus, castaneo-rufus ; prothorace punctis tribus 

 transversim dispositis (mediano lineari), elytris puncto laterali, antennis (articulis tribus primis praeter- 

 missis) tarsisque, nigris, his basi apiceque runs ; supra subtilissime punctatus, elytris tenuiter puncto- 

 lineatis vix striatis, interstitiis lsevibus. Long. 8 millim. 

 Hob. Nicaragua, Chontales (Belt) ; Panama, Bugaba (Champion). 



Var. a. Elytris, macula altera, suturam propiore fasciam obliquam aliquando pnebente, nee marginem nee 

 suturam attingente. Long, 7-8 millim. 



Eab. British Honduras, Belize (Blancaneaux) ; Panama, Bugaba (Champion). 



Var. /3. Prothorace bipunctato, elytris puncto laterali minimo. 



Eab. Nicaragua, Chontales (Belt) ; Panama, Bugaba (Champion). 



This is a variable species, and difficult to place ; it is, at first sight, very like the 

 var. b of M. nigro-punctatus, Duponch., but is really quite distinct — there is an essential 

 difference not only in the number of thoracic spots but in their position, the antennae 

 (and I believe the legs) are longer, the tibiae are wider, &c. The lateral spot on the 

 elytra is near, but not on, the middle of the margin ; both it and the inner spot when 

 present show a tendency to divide, but in the fasciate variety they join, often retaining 

 the indentate form. In var. |3 the linear middle thoracic spot has disappeared. I 



