Coleopf era from Ghontales. 166 



Mr. Belt has paid especial attention to the Longicorns, 

 and his collections sent home to the present time contain 

 about 250 species^ of which 242 are enumerated in the 

 following pages ; several obscure forms standing ovei; 

 until the arrival of further material. An analysis of this 

 department of the Fauna of Chontales gives the follow- 

 ing results : — 



Peculiar to Chontales 133 species. 



Common to Chontales and Mexico . . . . 38 „ 



„ and the West India Islands . 5 „ 



„ and the United States . . 5 ,, 



,, and New Grenada or Venezuela 24 „ 



,, and the Amazon Eegion . . 22 ,, 



„ and South Brazil ... 10 „ 



Generally distributed in Tropical America . . . 5 ,, 



No species is common to Chontales and the Old World, 



With regard to these numbers^ it cannot be denied 

 that the proportion of species peculiar to Chontales (consi- 

 derably more than one-half) would be much diminished 

 if the productions t)f regions adjoining Central America 

 were better known. On the other hand^ many local and 

 rare species no doubt remain to be discovered ; so that 

 a large amount of speciality in the Longicorn Fauna may- 

 be safely assumed. 



With regard to the genera, a similar analysis brings 

 into prominence the essential community of type of the 

 Longicornia, throughout the Atlantic Slope of Tropical 

 America. Out of 129 genera found in Chontales, no 

 less than ninety-five are generally distributed over the 

 whole area in question ; and nine only are peculiar to 

 the district. About ten, however, are distinguishable 

 as north Tropical forms ; i. e., peculiar to Central Ame- 

 rica and adjoining region, inclusive of Mexico. These 

 are Braderochus, Strongylaspis , Gallipogon, Mallodonop- 

 sis, Holonotus, Ornithia, Coelarthron, Evander, Metaleptus, 

 and OirrMcera. Several others might be added to this 

 list, as having only straggling representatives beyond 

 Central America and Mexico, where they exist in nu- 

 merous species; such as Stenosphenus, PtycJiodes, Delia- 

 tliis, Hanwwderus, and Carneades. Others extend further 

 to the southward (e. g., ten as far as Peru and the 

 Amazon Region) . Although so generally distributed 

 within their area, scarcely any Tropical American genera 



N 2 



