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 thrice 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. comognathus (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 flatter, and 
the 3rd antennal joint is hardly any longer than the 4th. 
Length, 7mm.; breadth, 3 mm. 
Point Hill, west of Mount Algidus. One found by 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 crests 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 
subtruncate at apex, a little bismuate at the base, a third broader than 
long, with 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 
uregularly punctured, almost as coarsely but much less closely than the 
head; there are some coarse erect setae at the sides. Scutellum squamose. 
Elytra nearly thrice the length of thorax, as broad as it is at the base; each 
elytron 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 spiniform tooth below 
the middle and another at the apex, the intermediate with a median denticle. 
Intermediate joints of tarsi rather short. 
Antennae with their 3rd joint small, hardly at all longer than broad ; 
club densely pubescent, about equalling all the other joints in length. 
