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METAMASIUS. 



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middle of the suture, oblong- semicircular, one at the sides beyond the middle, large and triangular, and a 

 small one on the third and fifth interstices towards the apex), the angulate space between them ochreous ; 

 the under surface (including a large transverse space near the base of the abdomen), femora, and tibiae 

 maculated with ferruginous. Eostrum curved, a little shorter than the prothorax, moderately stout, 

 sparsely, very finely/ punctate, obsoletely canaliculate beneath, the widened basal portion with an 

 impressed line, the frontal fovea small. Prothorax as long as broad, obliquely narrowing from about 

 the middle, feebly bisinuate at the base, flattened on the disc behind, very sparsely punctate. Scutellum 



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elongate- triangular, narrow, almost flat. Elytra much wider than the prothorax, somewhat coarsely 

 punctate-striate, the interstices feebly convex. Pygidium rather convex, coarsely punctate. Beneath 

 sparsely, rather coarsely punctate, much smoother down the middle, the first ventral segment with a 

 shallow median excavation. Femora (the anterior pair excepted) and tibiae finely ciliate, the posterior 



Length 10i, breadth 4 millim. 



tibiae with longer hairs. 



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Costa Rica, Boca de Limon (Pittier, in Mus. Brit 





specimen, found in March 1897. Broader and less depressed than M. quadri- 



lineatus, the markings of the elytra very different. The ferruginous colour of a 



portion of the elytral surface does not seem to be due to discoloration, and the 



ochreous space on the disc forms a large, common, shield-shaped patch enclosin 

 * — black spots. 



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19. Metamasius maculiventris, sp. n. (Tab. V. figg. 26, 26 a, $ 





Elongate-oval, rather convex, opaque above ; black, the prothorax with an oblique stripe on each side, and 



sometimes a V-shaped mark at the base, the elytra with a small spot at the base of the fifth interstice 

 and another at the shoulders beneath (sometimes connected), a transverse patch on the disc before the 

 middle and a larger one beyond it (sometimes connected externally and sometimes reduced to small spots 

 or streaks), and the metasternum with a large spot on each side, sanguineous or ferruginous. Eostrum 

 stout, strongly compressed, greatly curved, shorter than the prothorax, very sparsely, finely punctate, 

 more or less angulate at the apex beneath in the <5 , the abruptly-widened basal portion canaliculate 

 and somewhat coarsely punctured, the frontal fovea deep. Prothorax about as long as broad, compressed 



at the sides behind the middle and arcuately narrowed anteriorly, feebly bisinuate at the base, sparsely, 





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finely punctate, flattened on the disc behind. Scutellum elongate -triangular. Elytra oblong-subcordate, 

 much wider than the prothorax. finely punctate-striate, the interstices minutely punctate down the 

 middle. Pygidium sparsely punctate, flattened, subcarinate in the <S , sparsely pilose at the tip. Beneath 

 sparsely punctate. Anterior coxae with a small tuft of very short fulvous hairs. Femora and tibiae 



feebly ciliate in both sexes, the hairs short. 

 Ventral excavation shallow, extending forwards for nearly the whole length of the metasternum. 



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Hab. Nicakagua, Chontales (Belt, Janson : 6 $ ) ; Costa Rica, Tuis (Pittier : $ ). 



specimens, varying in the extent of the rufous markings of the upper surface 

 related to M. signiventris (Kirsch), from Ecuador (the type, 6 , of which ] 



T ength 12-16, breadth 4^-6 millim. ( J $ .) 





'ave seen*), but with a much stouter, compressed rostrum, which is angulate at the 



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apex beneath in the male, the fifth ventral segment without a very large densely 

 IS. . i pilose space in this sex, the prothorax relatively broader, &c. The laterally 



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rufo-vittate prothorax, the stout, compressed rostrum, the spotted metasternum & 



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separate M. maculiventris from M. nudiventris and M. rimoratus. 





* There is a § of it from Macas, Ecuador, in the Fry collection at the British Museum. 



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