176 ATYPHTTS. 



fleeted at their immediate base: when viewed from behind, the 

 posterior surface is longitudinally grooved ; the margination of this 

 groove is produced near the socket (not at the socket, as in Hydmo- 

 syne) into an obtuse spur ; the socket itself is margined on either 

 side with a close series of comb -like (erect and fine) teeth ; the ulti- 

 mate apex is armed with two incurved, robust claws of equal size. 

 The tarsi are attenuate and short; the first and second joints being 

 nearly equal (narrow, and somewhat dilated at the apex) ; the third 

 slightly broader and subcircular. 



There is a manifest similarity between this genus and Eupeges ; 

 both are in general form subcylindrical, parallel, and sufficiently 

 robust. The striking difference, however, between them in the form 

 of the maxillary palpi alone would, without other distinguishing cha- 

 racters, amply separate them. 



1. Atyphus carbonarius. 



A. oblongo-ovatus, subparallelus, punctato-striatus, impubescens, 

 niger ; capite brevi, inter oculos Y foveolato, granulate, nigro ; 

 thorace transverse, ad basin oblique depresso, punctato, flavo ; 

 elytris sat robustis, subparallelis, punctato -striatis, interstitiis 

 subtiliter granulatis ; antennis filiformibus, piceis ; pedibus 

 nigris. 



Long. corp. 3J lin., lat. If lin. 



Oblong-ovate, subparallel, punctate-striate, impubescent, shining, 

 black. Head short, transverse, not produced in front : below the 

 base of the antennae is a transverse triangular depression ; above the 

 base and between the eyes is a deep and distinct fovea, in the form of 

 the letter Y : the eyes are large, tolerably globose, and situated near 

 the base of the head ; the surface is deeply granulated and black. 

 Thorax broader than the head, transverse ; the anterior angles acute 

 and depressed ; the sides marginate, ami in outline subsinuate ; at 

 the base is a transverse depression, extending obliquely upwards 

 towards the anterior angles : the surface (when seen under a high 

 power) is finely punctate and glabrous ; the colour- flavous. Scutellum 

 impunctate, triangular, black. Elytra somewhat broader than the 

 thorax, subparallel, impubescent, deeply punctate-striate, the inter- 

 stices being very finely granulated. Antennce filiform, the third 

 joint being more attenuated than the rest ; piceous. Legs black. 



Morro Queimado (Rio Janeiro). In the collection of Mr. Fry, 

 M. Lacordaire, Mr. Waterhouse, and the Rev. H. Clark. 

 This species is subject to some variation. 



