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XVI. Additions to the Longicornia of Mexico and Central 

 America, with notes on some j^^'^i'^oushj-recorded 

 species. By Charles J. Gahan, M.A., F.E.S. 



[Read November 2nd, 1892.] 



Plate XII. 



The present contribution may be taken as a supplement 

 to the paper by the late Mr. H, W. Bates, which has 

 already appeared in the ' Transactions ' for this year. 

 Twenty new species are described, of which nineteen 

 belong to the family Lai)iiid(e ,- the remaining species is 

 placed in a new genus of Prion idee. One new genus of 

 Lamiid(c is characterised. With these additions the 

 number of Longicornia recorded from Mexico and Central 

 America is brought up to a total of 1372 species. 



Lasiogaster. gen. nov. 



(Male). Mandibles and front of head subvertical, the latter 

 transversely depressed near the base, feebly concave between the 

 antennal tubercles. Last joint of the palpi in the form of an elon- 

 gated triangle. Eyes large, encroaching considerablj- upon the 

 cheeks, which are reduced to two small triangular processes, one 

 on each side. Antennae surpassing but little the middle of the 

 elytra ; first joint short and stout, third to fifth subequal, each much 

 shorter than the first ; sixth to tenth gradually increasing in 

 length ; eleventh as long as the four preceding joints taken 

 together ; each of the joints from tlie third to the tenth provided 

 at its outer distal angle with a long slender ramus, which is slightly 

 flattened and dilated towards its free extremity. Prothorax trans- 

 verse, somewhat rounded at the sides, slightly uneven above, 

 anterior margin very feebly sinuate ; the lateral carina of each 

 side confined to the posterior half, where, commencing just above 

 the outer angle of the cotyloid cavity, it passes obliquely upwards 

 to join the basal margin, and at its junction with the latter forms 

 a slightly projecting angle. Elytra moderately elongate, parallel- 

 sided, rounded at their extremity, with the siitural angles briefly 



TRANS. ENT. SOC. LOND. 1892. — PART IV. (dEC.) 



