STERCULIA. 469 
deeply punctate, the ocelli of the punctures unusually indistinct. Mandibles very 
nearly as long as the head. Elytra finely and sparingly punctate. 
This species is very closely allied to 8. fulgens, Er., and has a similar structure of 
the antenne, but it has longer mandibles, a rather broader head, and the punctures on 
the under surface of this are less coarse and numerous and scattered irregularly over 
its surface. I have seen only two examples from Mexico and one from Nicaragua. 
3. Sterculia basalis. 
Viridis, nitida; capite thoraceque cyaneo-viridibus ; capite oblongo-elliptico, minus angusto, densissime minus 
grosse punctato, subtus disperse minus grosse punctato, mandibulis elongatis; elytris quam thorax longio- 
ribus, basi subtiliter rugoso-punctata. 
Long. 20 millim. 
Hab. Mexico (ex coll. Guérin-Meneville), Jalapa (Hége). 
This species, of which I have seen only one typical example, of the male sex, agrees 
with S. mandibularis in the structure of the antenne and the elongate mandibles, but 
differs in colour, and in the existence of a peculiar rugose, though obsolete, punctuation 
at the base of the elytra. A second example found by Herr Hoge differs in the colour 
being less green, but is, I think, certainly the same species. 
4, Sterculia humeralis. (Tab. XII. fig. 14.) 
Purpurea ; subtus viridi-cyanea, nitida; antennis gracilibus, articulo penultimo haud transverso; capite 
angusto, oblongo, supra dense fortius rugoso-punctato, opaco, subtus grosse punctato, nitidissimo, mandi- 
bulis brevibus ; prothorace angustulo, utrinque crebre sat fortiter punctato, area iongitudinali levigata, 
lata, utrinque basin versus conspicue impressa; elytris quam thorax paulo longioribus, minus subtiliter 
punctatis, sat nitidis, ad humeros sepius viridi-nitentibus. 
Long. 22-25 millim. 
Hab. Panama, Volcan de Chiriqui 2500 to 6000 feet (Champion).—SoutTH AMERICA, 
Colombia, Venezuela (coll. Sharp). 
This is readily distinguished from S. fulgens, Er., by the antennal structure, and the 
importance of this character is confirmed by numerous other minor characters, which 
show but little variation in the series of twelve examples before me. The antenne 
are 7 millim. long, the third joint is elongate, the fourth to the ninth transverse, the 
tenth much longer than the ninth and as long as broad, the terminal joint also is 
rather elongate. The punctuation of the upper surface of the head is coarse, and the 
ocelli of the punctures are easily detected; the mandibles are much shorter than the 
head. 
5. Sterculia pollens. 
Robustior, viridi-cyanea ; capite latiore, nigro-cyaneo, obscuriore, omnium densissime minus fortiter rugoso- 
punctato, subtus nitidissimo, vage, parce, haud grosse punctato, mandibulis gracilibus perelongatis ; thorace 
minus gracili, utrinque sat fortiter punctato, area longitudinali in medio sat lata levigata, utrinque basin 
versus sat conspicue impressa; elytris elongatis, tantum subtiliter obsoleteque punctatis. 
Long. 25 millim. 
