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68 



RITOCHOPHOEA. 



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Ilab. Mexico, Toxpam (Salle : var.) ; Guatemala, Senahu and San Juan [type] in Alta 

 Vera Paz (Champion), Cacao near Trece Aguas (Schwarz & Barber, in U.S. Nat. Mus.). 







Sixteen specimens, all bat one from the vicinity of the Polochic Valley. A small 



depressed form resembling C. exaratus and C. convexiuscitlus, with a long, 



shallow, 



triangular, biseriate-punctate, subcarinate depression extending down the disc of the 



prothorax, and the depression limited externally by a broad, finely and 

 punctured space, the ventral surface (the sides and prothorax excepted) also very 

 finely punctate. Smaller, flatter, and less coarsely punctured than C. ligniperdus, the 



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prothorax with a smooth cariniform median line, the rostrum a little longer and less 



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dilated at the apex. In one of the four examples from Senahu the seriate punctures 





on the prothorax are 



large and the 



space exterior to them is almost impunctate. 



The one from Mexico has the puncturing of the prothorax altogether coarser, but it 

 seems to belong to the same species. 







49. Cossonus canaliculatus. (Tab. III. %g. 19, 19«.) 



Curculio canaliculatus, Fabr. Ent. Syst. i. 2 } p. 471 (1792) \ 



Hylesinus canaliculatus, Fabr. Syst. Eleuth. ii. p. 395 (1801) 2 (nee Cossonus canaliculatus, Fabr. 







L 







Syst. Eleuth. ii. p. 496, and Boh. in Schonh. Gen. Cure. iv. p. 1023, from Sumatra 

 and Java). 





Cossonus vulneratus, Illiger, Mag. iv. pp. 131, 149 (1805) 3 ; Hosensch. in Schonh. Gen. Cure. iv. 



p. 1030 4 ; viii. 2, p 



272 





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cj . Ventral segments 1 and 2 deeply excavate down the middle. 











Ilab. Mexico, Acapulco, Mexico city 



Cordova, Jalapa, Las Vigas (Hoge), 







a 

















Cruz (Salle), Teapa (U. H. Smith) ; Guatemala, El Reposo, Capetillo, San Geronimo 



(Champion); Costa Rica, Pimtarenas (Biolley) ; Panama, Volcan de Chiriqui (Cham- 

 pion) . 



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Colombia, Carthagena 5 ; Trinidad (coll. Fry) ; Antilles 1 2 , Puerto Rico. 



, 



This 



small, rather convex, moderately 







speci 



aid by Eosenschoeld 







to be of the size of the Pal sear ctic Eh 





bipustulatus) , with a short, feebly 









rostrum, a canaliculate irons, rather prominent eyes, an oblong 











hich is 







prothorax 

 middle, the depression terminating 

 area, and limited externally by a 

 crenate-striate elytra. 



gularly biseriato-foveate and triangularly depressed down the 









posteriorly in a deep, triangular, rugose, carinate 



long polished 



space 



j 



and rather sh 









middle in the male, as in C. exaratus. 

 used for this American species in Sch 



he ventral segments 1 and 2 are deeply excavate along the 



clear whv the name C. vulneratus is 



It 





work 



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50. Cossonus evanescens, sp. n. 









20 a.) 









\ 







Elongate, narrow, cylindrical, rather convex, shining, black, the base of the antennae, and the tarsi in part, 





. 





. 



ferruginous. Head foveate and finely punctate between the eyes, the globose basal portion almost 













* 



The name illigeri is suggested for the eastern form. 



















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