HOPLOEEHINOIDES.— COSSONINA. 



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basal portion multicarinate, the apical portion closely punctured, and the antennae inserted at about the 



middle (in the second specimen shorter, with an undulate ridge on each side, a fine carina down the middle, 

 and the antennae inserted nearer the tip), ( $ ) slender, arcuate, smooth from near the base, and the antennae 

 inserted at about the basal third, joints 1 and 2 of the funiculus elongate in both sexes, 3-5 decreasing 

 in length. Prothorax somewhat conical and about as long as broad in the tf , a little shorter and more 

 rounded at the sides in the $ , closely, minutely, or subobsoletely punctate. Elytra finely punctate-striate, 

 the interstices feebly convex or flat, subgranulate in one specimen. Beneath sparsely, obsoletely 

 punctate. Anterior tarsi of the d dilated and clothed with long, laterally projecting, pallid hairs. 

 Length 7-8, breadth 2£~2f millim. ( d $ .) 



Eab. Guatemala, Cacao, 800 feet, near Trece Aguas, in Alta Vera Paz (Schwarz and 

 Barber, in U.S. Nat. Mus.). 



Two males and two females, the former varying in the length and sculpture of the 

 rostrum, and in the point of insertion of the antenna?. The sculpture of the prothorax 

 and elytra varies also in the different specimens of each sex ; but as all four are labelled as 

 having been found on the male-flowers of Attalea cohune (the large palm of the region), 

 and the general coloration is similar to that of Derelomus (species of which are known 

 to attack Chamcerops), this cannot be altogether due to immaturity. 









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2. Hoplorrhinoides pallidus, sp. n. 



$ . Very like the same sex of H. attalece, but with the rostrum straighter and considerably longer than the 

 head and prothorax, striato-punctate at the base ; joint 2 of the funiculus much shorter than 1 ; the pro- 

 thorax strongly transverse, rapidly narrowing from the middle forwards, shining, densely, minutely 

 punctate ; the elytra obsoletely punctate-striate, the interstices flat and coriaceous. 



Length 6-J-, breadth 2-J- millim. 



Hob. Panama, Volcan cle Chiriqui {Champion). 



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One immature specimen, set aside years ago for want of further material. It pro- 

 bably lives upon the male-flowers of a different palm from that attacked by H. attalece, 

 Attalea cohune being absent, I believe, from the Pacific slope of Chiriqui. 





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Group C0SS0NINA. 





ine Cossonids are usually treated either as a separate Family of the Rhynchophora 

 or as a subfamily of the Calandridae, but they seem to be best placed under the 

 Curculioninge, the group "Acamptina" connecting them to a certain extent with the 

 Cryptorrhynchina. Wollastons arrangement (1873) is here followed, except that 



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the Scolytiform Rhyncolides are dismembered from the Cossonides (following Leconte 

 and Horn), and that certain Trypetid and Hylobiid genera are altogether excluded. The 





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typical forms are mainly recognizable, apart from their general facies, by the claw-like 

 prolongation of the outer apical angle of the tibiae (this being concave within in various 

 highly developed genera, such as Bhopalomesites, Sec), and the feebly emarginate or 

 simple third tarsal joint ; but these characters are not always diagnostic, the tibia? 

 sometimes being unarmed at the apex and the third tarsal joint bilobed. The Cossonina 



