SCOLOCHRUS. 59 



Eab. Mexico 1 , Cordova {Salle); Guatemala, Zapote (Champion) ; Costa Eica, Volcan 

 de Irazu (Rogers). 



The difference between this and the following species consists principally in the 

 purplish and more finely punctate thorax, which is also devoid of the light anterior 

 margin ; the legs in the present insect are also uniformly dark blue. 



3. Scolochrus albilabris. 



Scolochrus albilabris, Suffr. Monogr. vii. p. Ill, xii. p. 388 \ 



Scolochrus suturalis, Suffr. Monogr. vii. p. 113. 



Scolochrus biverrucatus, Suffr. Monogr. vii. p. 115, xii. p. 389. 



Sab. Mexico \ La Parada, Cuernavaca, Gua, Capulalpam, Juquila (Salle) ; Guate- 

 mala, near the city (Salvin); Hondueas (Salle). 



After examining a great many specimens, I have come to the conclusion that 

 these three of Suffrian's species cannot well be regarded as specifically different. He 

 admits himself the great variability of this insect, of which scarcely two are alike, and 

 does not think it improbable that his S. suturalis is identical with S. albilabris. 



S. biverrucatus is founded upon a single female, differing in the closer punctuation of 

 the thorax and by the want of the apical elytral spot ; the lateral margin of the former 

 is also described as being uninterrupted white. I have now before me specimens which 

 agree partially with Suffrian's type of this species ; the thorax, however, is entirely 

 black, as well as the posterior part of the elytra ; and I could further distinguish 

 another species closely allied to S. albilabris or to any of its allies; but I do not 

 think that I am wrong in considering them all local varieties. A little closer punc- 

 tuation and the absence of a spot is, in my opinion, not sufficient to make a new species 

 of an insect which is known to vary to a great extent, not alone in regard to colour, but 

 also in the punctuation of its different parts. 



4. Scolochrus zonatus. 



Scolochrus zonatus, Suffr. Monogr. vii. p. 113. 

 Eab. Mexico, Oaxaca. 



This species, which resembles very closely S. albilabris, is distinguished by the 

 different shape of its body, the latter being more convex and the thorax laterally 

 more rounded ; the antennae also are not widened at their extremity, but slender. The 

 type of this species has been also kindly lent to me by Dr. Peters. 



5. Scolochrus montezuma. (Tab. III. fig. 19.) 



Scolochrus montezuma, Suffr. Monogr. vii. p. 116 *. 



Scolochrus speciosus, Lee. Trans. Amer. Ent. Soc. ii. p. 56 (1867). 



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