PYKOPHOEUS. 473 



quoted. In the form of the tubercle at the base of the thorax, the protuberant meso- 

 sternum, &c., P. radians agrees with P. stella, but it may be separated from that species 

 by the more divergent hind angles of the thorax ; the males, moreover, have the antennse 

 considerably more elongate, the elytra narrowing from a little below the base (instead 

 of from slightly before the middle, as in P. stella), and the genitalia very differently 

 formed. In this last-mentioned character the males of each of the varieties agree 

 perfectly with the type. The var. y is connected by intermediate forms, and the 

 var. a, inhabits the same region as the type. The luminous portion of the base of 

 the abdomen is limited to a narrow space immediately beneath the intercoxal process. 

 P. radians also resembles the South- American P. pyrophanus, Illig. ; but it has the 

 apices of the elytra less dehiscent, the prosternum more sparsely punctured, and the 

 genitalia of the male very differently formed. A male from Panima is figured. 



16. PyrophomS restinctus. (Tab. XX. figg. 33, <S ; 33 a, genitalia, 6 .) 



Moderately elongate, narrow, feebly convex, shining; rufo-testaceous or testaceous, the eyes, the eight outer 

 joints of the antennae, a broad median vitta on the prothorax, not quite reaching the base or apex and 

 slightly narrowing in front, the scutellum, and the sides of the elytra from before the middle to the apex, 

 broadly, black, the black on the elytra gradually extending inwards and reaching the suture some distance 

 before the apex, the abdomen, and usually the sides of the metasternum also, partly piceous ; above and 

 beneath somewhat thickly pubescent, the pubescence on the dark portions of the elytra fuscous, fulvo- 

 cinereous elsewhere. Head thickly, rather coarsely punctate, triangularly depressed in front, the eyes 

 moderately large ; antennae short, not reaching the hind angles of the prothorax, moderately stout, serrate, 

 the third joint slightly longer than the second. Prothorax a little longer than broad, very gradually 

 narrowing from the base forwards, the sides feebly sinuate before and behind the middle and slightly 

 rounded in front, the disc broadly depressed on either side before the middle; the hind angles moderately 

 long, rather stout, divergent, distinctly incurved at the tip, finely carinate; the surface closely and 

 moderately finely punctured, the punctuation becoming coarser at the sides, and usually with indications 

 of a faint smooth median line. Scutellum densely punctured. Elytra about two and three-fourths longer 

 than the prothorax, rapidly narrowing from the basal third ; finely punctate-striate, the interstices feebly 

 convex and thickly punctured ; the apices narrow, slightly dehiscent, and submucronate. Beneath finely 

 and closely, the prosternum sparsely and coarsely, punctate ; mesosternum depressed, a little raised 

 behind, the metasternum slightly produced and convex between the middle coxae. 



Var. The pubescence on the upper surface uniformly fulvo-cinereous. 

 Length 13-14, breadth 3±-4 millim. ( <$ .) 



Hob. Nicakagua, Chontales (Belt, U. M. Janson). 



Four specimens — three of the typical form, with the pubescence of the upper surface 

 partly abraded, and one of the variety. This insect somewhat resembles P.formosus, 

 Germ., from Brazil, but it is less elongate, more closely punctured, and more thickly 

 pubescent, the elytra are acute at the apex and differently coloured, the antennae are 

 shorter, &c. P. restinctus agrees with Alampes melanoxanthus and A. vestitus in the 

 form of the genitalia of the males, but it differs from them in the declivous meso- 

 sternum and the shorter intercoxal process of the metasternum. 



biol. cente.-amek. Coleopt., Vol. III. Pt. 1, March 1896. 3P 



