LUCANIDAE. 391 



rately finely but not closely punctured, rather more coarsely near the sides, 

 with a shallow median frontal impres' ion, and a smooth longitudinal space 

 on its basal half. Scutellum squamose. Elytra oblong, as wide as thorax 

 at the base, nearly thiice its length, broadly rounded behind, their puncta- 

 tion like that of the thoracic disc. 



Mandibles simple, as long as the head, bidentate at apex, rather narrow, 

 the enclosed area oviform, without any basal dilatation ; they bear 

 numerous fine setae. 



Antennae with a few slender setae on the basal joint, 3rd slightly longer 

 than 2nd but more slender, joints 4—6 short. 7th darker and a little broader ; 

 club densely pubescent and opaque, as long as the preceding joints together. 



Tibiae minutely denticulate externally, the anterior with a distinct 

 median tooth and another at the extremity. 



Body irregularly clothed with depressed, elongate, straw-coloured 

 squamae. 



M. coniognathus (2812), from Westport, is the nearest species ; in it, 

 however, the thorax is more curvedly narrowed anteriorly, and it has broad, 

 concave, marginal channels of which there is no trace in this species, the 

 squamae are shorter and less numerous ; the mandibles appear tridentate 

 near the extremity ; the hindmost tooth, however, is upright instead of 

 being horizontal and is situated near the middle ; the eyes are flattei-, and 

 the 3rd antennal joint is hardly any longer than the Ith. 



Length, 7 mm. ; breadth, 3 mm. 



Point Hill, west of Mount Algidus. One found bv Mr. T. Hall, at a 

 height of 3,500 ft., in December, 1913. 



3848. Mitophyllus cristatellus sp. nov. 



Oblong, subdepressed, slightly nitid ; nigrescent, tarsi and antennae 

 rufo-piceous ; very irregularly clothed with decumbent, but only moderately 

 elongate, testaceous squamae, and some erect greyish ones which form 

 about 6 small cre.sts on each elytron, a pair on the thorax near the 

 scutellum, and entirely cover its hind angles. 



Head nearly as broad as front of thorax, laterally angulate in front of 

 the slightly convex eyes ; it is coarsely and very closely punctured. Thorax 

 subtrmicate at apex, a little bisinuate at the base, a third broader than 

 long, wdth slightly curved sides ; anterior angles not at all prominent, the 

 posterior hidden by the squamosity ; it is nearly smooth along the middle 

 and on a pair of spots between it and each side, the rest of its surface is 

 irregularly punctured, almost as coarsely but much less closely than the 

 head ; there are some coarse erect setae at the sides. Scutellum squamose. 

 Ehi;ra nearly thrice the length of thorax, as broad as it is at the base : each 

 eljiiron indefinitely bistriate near the suture, the punctation very irregular 

 but similar to that of the thorax. 



Mandibles thick, rather longer than the head, evidently bidentate at 

 the extremity, nearly parallel inwardly ; each with a laterally compressed 

 median prominence on the inside, and a large, prominent but obtuse external 

 angulation at the base. 



Tibiae denticulate externally, the anterior with a s])iniform tooth below 

 the middle and another at the apex, the intermediate with a median denticle. 

 Intermediate joints of tarsi rathei- short. 



Anteimae with their 3rd joint small, hardly at all longer than broad ; 

 club densely pubescent, about equalling all the other joints in length. 



