1^8 Mr. H. W. Bates on Longicorn 



Mallodonopsis Mexicanus, Thorns. Classif. des Ceramb. 

 p. 317. — The elytra are rather less punctured at the base 

 than in Mexican specimens. Mallodonopsis resembles 

 very closely the Mallodons of Tropical America, having 

 the same elongate, scarcely convex form, and black or 

 chestnut-brown colours. The species are doubtless found 

 under loose bark of large felled trees ; they differ from 

 the Mallodontinae in their roughened and spinulose fe- 

 mora and tibias, and in the much longer basal joint of 

 the antennae. 



Mallodon spinibarbe, Lin. Syst. Nat. II. 624. — One 

 male in Mr. Belt's collection, agreeing yevj well with 

 others I have examined from Mexico, Cayenne, the 

 Amazons region, and South Brazil. The species has a 

 wide range, and the ^ varies in the same locality in 

 length of mandibles, form of thorax, and punctuation of 

 the elytra. Both sexes may be distinguished by the 

 angle of the cheeks projecting on each side as a simple 

 tooth below the mandible. The smooth patches on the 

 thorax in the S are always well defined, and the inter- 

 spaces are rugose-punctate. I believe several false 

 species have been made upon insignificant varieties of 

 this insect. 



Mallodon ancjustatum, Thorns. Physis, I. p. 100. — This 

 appears to be the common species at Chontales, which I 

 refer to the above name with some hesitation, as the 

 author does not notice the chief distinctive points. It is 

 smaller and narrower than M. spinibarbe, with the thoracic 

 patches in the (^ less defined, and with the projection of 

 the cheeks near the base of the mandibles bicuspid. 

 Also found in Mexico. 



Mallaspis Beltii, Bates, Trans. Ent. Soc. 1869, p. 49. 

 • — I have now seen a very large number of specimens of 

 this species, all from Chontales. The male is always of 

 a more or less light brassy-brown ; the female is generally 

 blueish-green, but rare varieties occur of brassy and 

 coppery hues. 



Mallaspis paradoxa, Bates, Trans. Ent. Soc. 1869, p. 

 383. — This remarkable species was described from what 

 I indicated with doubt as the female. Since then I have 

 received males from Mr. Belt, which differ little from 



