Classification of the Coleo'pterous family Endomychidae. 65 



Avith the upper surface a little more opaque but rather less 

 sombre in colour. The antennae are relatively a little 

 longer and the legs a little more slender. The pronotum 

 is very strongly dilated a little in front of the middle and 

 much narrowed behind, and the elytra are well rounded 

 at the sides. 



Of a third species I await further specimens for 

 description on a later occasion. 



Genus Periptyctus. 



Periptyctus eximius, sp. n. (Plate I, fig. 4.) 



Feirugineus, pronoti macula utrinque antica, elytroiuin Jiiumeris, 

 tibiarum dimidio inferior! tarsisque pallide flavis, pionoti medio et 

 parte postica, utriusque elytri medio clavaque antciinali infuscatis 

 (sed hujus apice pallido); breviter ovalis, convexus, glaber; pronoto 

 parce sat profunde punctato, utiiiiquc late excavato, marginibus 

 lateraUbus hand latis, leviter arcuatis, angulis jaosticis acutis; 

 elytris brevibus, striato-puiictatis, puuctis numerosis, distinctis, 

 parum regularibus, humeris bene elevatis; antennis gracilibus, 

 clava laxe articulata, articulo ultimo longe ovali. 



Long. 3 mm. ; lat. max. 2 mm. 



Hab. New S. Wales : Illawarra {G. E. Bryant, Oct.). 



Two specimens without apparent sexual difference. 



Although nmch larger than the typical species, P. 

 russulus, and differing from it considerably in shape, this 

 species has all the peculiar structural features of the genus. 

 It is a nuich shorter and more convex insect, very shining 

 but with well-marked punctures upon the elytra, forming 

 rather broad irregular longitudinal Unes. 



The sides of the pronotum are more broadly concave 

 than in P. russulus, the elevated lateral margins a little 

 narrower in proportion and the sides more gently and 

 uniforndy curved. The elytra are relatively very short, 

 wdth the shoulders very prominent and the curvature of 

 the sides continuous with that of the sides of the pro- 

 thorax. They are also much more convex and more 

 pointed behi^id than those of P. russulus. The antennae 

 are h)ng and slender, with a loosely jointed club. Although 

 a broader insect the prosternum is rather narrower than 

 in P. russulus. The latter species was taken at Hobart 

 by J. J. Walker. 



TRANS. ENT. SOC. LOND. 1920. — PARTS J, II. (jULY) F 



