XYLORYCTES. 323 



the male less (or not perceptibly) sinuated towards the anterior angles. Others agree 

 with the North-American form in both these respects. 



Drnry, apparently misled in some way by Fabricius, gave, in his Index (1773), the 

 inappropriate name of S. jamaicensis to the insect of which he figured the male and 

 female in the body of his work, stating, in the text, that he received the two sexes, 

 found in copuld, from New York. Fabricius soon after (1775) described his two 

 species (S. satyrus and S. jamaicensis), the former the same as Drury's species, the 

 latter evidently different from it, although he cites Drury's figures. On these grounds- 

 Von Harold (Col. Hefte, vii. p. 117) proposed the suppression of the name S. satyrus, 

 and the adoption of that of S. jamaicensis for the New- York species. I cannot think 

 that such a ridiculous misapplication of the laws of priority will be adopted by ento- 

 mologists, especially by those of the United States, who, in fact, have hitherto ignored 

 the suggestion. 



2. Xyloryctes lobicollis. (Tab. xvm. figg. 21, 21 a, 6 .) 



X. satyro simillimus, paullo magis elongates, thorace in c? antiee verticaliter truncato et profundius excavato,. 



margine superiore medio lobulo horizontaliter porrecto et obtuse sub-bifido, pygidioque subtiliter dense 



punetulato. Thorax margine antico rotundato et paullo dilatato, elytris sicut in X. satyro punctato- 



striatis. 



<$ minor. Cornu capitis brevissimum ; thorax antiee multo minus alte truneatus, lobo mediano canalieulato 



brevissimo. 

 5 . Quam X. satyro magis elongata pygidioque subtilius punetulato. 

 Long. 24-33 millim. S $ . 



Hah. Guatemala (Salle), Zapote (Champion) ; Panama, Volcan de Chiriqui (Trdtsch* 

 Champion). 



Fourteen specimens. From Mexican examples of X. satyrus this species is not 

 distinguishable, except by the form of the thorax in the male, the fore part of which 

 is vertically truncated, with a central obtuse lobe projecting beyond the upper edge, 

 and the face of the truncation concave. A male specimen from Chiriqui is figured. 



3. Xyloryctes telephus. (Tab. XIX. figg. 4, 4 a, 5, 5 a, 6 .). 



Xyloryctes telephus, Burm. Handb. der Ent. v. p. 209 \ 



Hah. Mexico \ Hacienda de Bleados in San Luis Potosi (I)r. Palmer), Oaxaca,. 

 Chiapas (Salle), Jalapa (Hoge). 



A large number of examples were collected by Herr Hoge at Jalapa, all agreeing in 

 the obliteration of the sutural stria (except near the apex) as well as in the smoothness 

 of the rest of the elytral surface, and in the long, nearly horizontal, conical lobe of the 

 thorax, which projects over the deeply concave and vertical anterior truncature. The 

 pygidium is much more sparsely punctured than in X. lohicollis and X. furcatus, and 

 is often smooth and polished in the female. In males of minor development the 

 thoracic lobe is very short and obtuse, but it is never absent. The size varies from 



2TT2 



