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RHODOB^NUS. 



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11. Khodobaenus auriculatus. (Tab. VI. figg. 11, 11 a,b, s ; 12, $ .) 













Cactophagus auriculatus, Chevr. Ann. Soc. Ent. Fr. 1882, p. 580 \ 



cJ. Prothorax quadrate, the anterior angles rectangularly dilated or (as in the type) with a stout, ear-like, 



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concave prominence ; rostrum lamellate on each side inferiorly for some distance beyond the points of 

 insertion of the antennas, closely punctate laterally, the peduncle of the submentum with a compressed 



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angulate prominence at the base. 

 2. Prothorax rounded at the sides anteriorly; rostrum longer and smoother, not lamellate laterally, the 



f* 1 1 J • I J_ A- 1_ I i i_ _ ,. i_ 1— ., 4~ 4- I, rt Uv ^ ,_ ^ 



peduncle of the submentum with a stout, blunt tooth at the base. 



ixuu. Mexico, Toxpam and Cosamaloapan in Vera Cruz {Salle: 6 $ ), Chiapas 1 

 //yi 7 ' c?); Guatemala, Coban in Alta Vera Paz (Conradt : $); Nicaragua, 



ontales (ite& : $ ) ; Costa Eica, Turrialba (U.S. flat. Mus. : $ ). 





ave seen nine examples of this species, two only of which (including the type) 

 are of the male sex. R. auriculatus is very like B. nawradi, but may be separated 



^■om it by the relatively broader unimpressed prothorax, with less sinuate base, the 





small scutellum, the much longer and more compressed rostrum of the female, and the 





peculiar rostral and prothoracic characters of the male. The upper surface is bluish- 



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grey-pruinose, and sprinkled with whitish dots (which indicate the position of the 



coarse scattered punctures, those of the elytral interstices being much larger 



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than those of the striae), the elytra with two broad, suturally interrupted, velvety-black 



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fascia-, one median, the other subapical. The rostrum is gradually widened towards 

 the base, and the femora and tibias are closely fimbriate with short hairs, in both 



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the prominent, subconical pygidium is also closely set with long bristly hairs at 

 ; and the ventral depression of the male is very shallow. The length varies 



,4.1 4.2~ . 





Zo mm. 



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Bhodobsenus fortirostris, sp. n. (Tab. VI. figg. 13, 13 «, <? .) 



g-elliptic, rather broad, opaque, black, brownish- or plumbeo-pruinose, the scattered punctures each 

 surrounded by a rounded, pale brown spot, the elytra with two more or less distinct, common, velvety- 

 black, transverse fasciae — one median, widened towards the suture, the other subapical. Rostrum (S) 

 v arely as long as the prothorax, stout, compressed, and (as seen in profile) greatly thickened towards 



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the base and strongly arcuate above, coarsely closely punctate to near the tip, ( $ ) straighter, smoother, 



and less thickened basally, the peduncle of the submentum with a short tooth at the base in this sex. 



* * rinse stout, the funiculus pruinose. Prothorax about as long as broad, rounded at the sides 



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anteriorly and feebly constricted in front (in one <$ from Toxpam with a small angular prominence on 



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each side iust behind the subapical constriction), feebly bisinuate at the base ; rather coarsely, somewhat 

 closely punctate. Scutellum triangular. Elytra finely punctate-striate, the interstices rather coarsely 

 uniseriate-punctate. Pygidium sparsely punctured, clothed with hristly hairs at the tip. Ventral 

 excavation of the 6 shallow. Femora and tibiae fringed with short hairs. 





Length 10-16, breadth 3^6^ millim. ( J $ .) 



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Hab. Mexico, Toxpam in Vera Cruz (Salle : 6 $ ) ; Guatemala, Purula in Vera 





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lampion : 6 ). 



Six males and one female, varying greatly in size, one only of the males (fig. 13) 



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ith a small angular prominence at the sides of the prothorax near the apex, the 





biol. centr.-amee., Coleopt, Vol. IV. Pt. 7, April 1910. SS 



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