112 PHYLACTICT7S. 



(Tab. IV. fig. 6 h) is short and attenuated ; the basal joint elongated, 

 and towards the apex slightly incrassated ; the second is minute, 

 almost triangular ; the third is not larger than the second, circular, 

 — from the centre of which proceeds the terminal joint, which is 

 elongate, and terminating at the apex in a globular inflation, which 

 completely conceals the claw when viewed from above. 



The robrtst and abbreviated form, the (generally) anteriorly com- 

 pressed thorax, and the simple filiform antennae at once point out 

 this genus. The details of structure are yet more evidently distinct. 

 Its unarmed post-tibia, and minute second and third joints of the 

 post-tarsus are sufficient of themselves to separate it. 



1. Phylacticus modestus. (Tab. IV. fig. 5.) B.M. 



P. ovatus, subcylindricus, brevis, robustus, pubescens, straminevs ; 

 capite depresso, haud producto, punctato, inter oculos foveolato, 

 labro nigro, ocidis parvis, haud prominentibus, ad basinpunctato ; 

 thorace quadrato, antice subconstricto, angulis promimdis, haud 

 truncatis, ad latera obsolete marginato, ad basin complanato, et 

 transverse depresso, punctato ; elytris robustis, punctato-striatis, 

 pubescent ibus ; antennis flliformibus, robustis, art. l m0 lato, 2 nd " 

 brevi, minuto ; pedibus stramineis. 



Long. corp. 3 lin., lat. 1 lin. 



Ovate, short, robust, punctate-striate, finely pubescent, of a pale 

 straw colour throughout. Head minute, vertical, hardly produced ; 

 below the base of the antennae is a transverse triangular depressed 

 plane ; immediately above, or almost between the basal joints, are 

 two oblique well-defined carinations, rendered more distinct by 

 a deep medial fovea, and by two lateral depressions adjoining the 

 inner margins of the eyes ; eyes small, lateral, situated at the base 

 of the head ; the surface at the base punctate. Thorax transverse, 

 robust, constricted in front ; the anterior angles are much depressed 

 and almost obsolete ; the sides marginate ; the base (when viewed ob- 

 liquely) is broadly depressed ; the surface throughout is punctate and 

 very finely pubescent. Scutellum somewhat cordiform, impunctate. 

 Elytra robust, broader than the thorax, punctate-striate, at the base 

 obsoletely gibbous, clothed throughout with aflne flavous pubescence, 

 sparingly distributed. Antenna filiform. Legs sufficiently robust ; the 

 globular inflation of the posterior claw of a bright rufous colour. 



Very closely allied in form to its congeners, but distinguishable 

 at once by its pale flavous elytra and larger size, as well as by the 

 markings on the head and the form of its thorax. 



Santarem (Amazon River). A single specimen, taken by Mr. Bates, 

 is in the cabinet of the British Museum. 



