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KHODOB^ENUS 



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<S . Rostrum about as long as the prothorax, abruptly deflexed and compressed from the broad, sulcate basal 

 portion, the apical portion obsoletely punctate towards the base ; first ventral segment broadly flattened 

 down the middle and with a more or less distinct, short, compressed, cariniform prominence in the centre 

 towards the anterior margin. 



§ . Eostrum much longer and with the compressed apical portion almost smooth, the peduncle of the 



submentum with an angular prominence in front. 

 Length 6f-10^, breadth 2^-3^ millim. 



Hab. Mexico 1-5 , Vera Cruz, Guerrero, Guanajuato, Morelos, Oaxaca, &c; Guatemala ; 



Nicaragua ; Costa Rica. 



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An abundant insect in Mexico and Guatemala, reaching an elevation of 8000 feet 

 l Guerrero. It may be known by its narrow, subfusiform shape ; the basally excavate 

 prothorax ; and the rufous colour of the prothorax and the elytra, the former with a 

 narrow median vitta (rarely divided into two spots), and sometimes a spot or streak on 

 the flanks, black, the latter immaculate. R. hcematidus (the type of which I have seen) 

 is based upon freshly emerged specimens with each of the minute punctures bearing a 

 small, hair-like scale. The compressed tubercle on the first ventral segment of the 



ale is usually very 



but in one or two examples it is apparen 



but these individuals may be females with the rostrum not longer than in the male. 

 The numerous specimens of R. hcematidus before me are all from Mexico ; the two 



with the median vitta of the prothorax divided into two spots, and with a rounded spot 

 on the propleura, were found by Mr. Wick ham at Toluca. 



Some of the typical examples before me are labelled as having been found on Dahlia 

 (at Guadalajara), and " corn and beans " (at Quiche). 



41. Khodobaenus bisignatus, sp. n. (Tab. VII. figg. 12, 12 a, s .) 



Subfusiform, opaque above, black ; the prothorax and elytra rufous, the former with a narrow median vitta 

 and a spot on each flank, and the latter with a spot at the middle of the disc at some distance from the 

 suture, black; the under surface densely cinereo-pruinose. Eostrum not longer than the prothorax, 

 short, abruptly incurved from the broad, punctured, narrowly sulcate basal portion, the apical portion 

 compressed, very sparsely, finely punctate, in the $ a little smoother, unarmed at the tip in both sexes. 

 Prothorax subcorneal, constricted in front, about as long as broad, obsoletely punctate, and with a 

 transverse, arcuate depression on the disc towards the base. Elytra much wider than the prothorax, 

 gradually narrowing from the rounded humeri, finely punctate-striate. Pygidium conical. Beneath 



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sparsely, rather coarsely punctate; ventral excavation of the <3 long and deep, without trace of 

 compressed tubercle anteriorly. 













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Length 7-81 breadth 2^-3 millim. ( 6 $ .) 



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Hab. Mexico (Truqui), Puebla, Juquila (Salle), Tehuan tepee (Mus. Brit 







1 I 



A. 



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Five specimens. Very like R. sanguineus, but with a shorter and stouter rostrum 

 both sexes, a black spot on the disc of each elytron near the middle, and a long, 

 deep, non-carinate ventral excavation in the male. It has a similar transverse 



e 



the disc of the proth 



paratiug R. bisignatus from 









, 







the varieties of R. 13-punct'atus. R. bipunctatus, Chevr., from Brazil, has somewhat 



similarly marked elytra. 



biol. centr.-amer., Coleopt., Vol. IV. Pt. 7, April 1910. XJTJ 







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