BY THOMAS G. SLOANE. 153 



Genus M e c y c l o t ii o r a x. 



Mecyclothorax ambiguus Erichson. 



J/rt(;.— Launceston, AVest Tamar, Evandale, Great Lake (Simson. Nos. 2493, 

 2(U2. 3473); King Is. (Lea); Cradle Mountain, Waratah (Carter and Lea). 

 Occurs also in Australia (widely spread), and Xew Zealand. 



Genus A m b l y t e l u .s. 



Table of Tasmanian species. 



1 (81 Upper surface unicolorous. 



2 ("I Prothorax with basal angles obtuse, anterior marginal seta present. 



.3 (6) Prothorax with margin widely reflexed and bearing a seta at basal 

 angles . 



4 (5) Elytra with third, fifth, and seventh interstices seriate-punctate; striae 



strongly crenulate. Length, 7.5 mm siria/iis SI. 



5 (4) Elytra with third and fifth interstices punctate, seventh impunctate; 



striae finely crenulate. Length. 8 mm sinisoiii S\. 



6 (3) Prothorax with margin narrow and without a seta at basal angles. 



(Elytra with striae faint, or obsolete; third interstice only 

 punctate). Length 7-8 mm iiiger S\. 



7 (2 1 Prothorax with basal angles marked, anterior marginal seta wanting. 



(Third interstice of elytra impunctate.) Length, 4.5 — 5.5 mm. 



placidus Lea. 



S (1) Elytra black with two discoidal vittae and lateral margins testaceous. 



(Third, fifth and seventh interstices punctate, sutural black area 



reaching base. I Length, 8 — 11 mm cur/us Fabr. 



My conception of the genus Amhhjtelus includes Di/ntricliothurar of Black- 

 burn, which I believe to have been differentiated generically from Amblytehis on 

 insuffieient grounds. I do not know Dyscolus australls Erichs., and /). dilotatus 

 Erichs., in nature. 



AmULYTELU.S STRI.\TUy, Sp. UOV. 



Oval; prothorax a little wider at base (1.5 mm.) than apex (1.35 mm.), 

 rounded on sides, basal angles obtuse, two marginal setae on each side; elytra 

 oval, wide, strongly punetate-striate, interstices 3, 5, and 7 bearing a series of 

 setiferous punctures. Black ; femora reddish piceous ; tibiae, tarsi , antennae, and 

 palpi ferruginous. 



Head large (1.5 mm. across eyes), obliquely narrowed behind eyes, convex 

 posteriorly; occiput a little swollen behind eyes (beside posterior supra-orbital 

 seta) ; front depressed; eyes large, protuberant. Prothorax l)roader than long (1.5 

 X 2.1 mm.), widest before middle, strongly roundly narrowed to apex, narrowed 

 to base in a light curve; apex very lightly emarginate, bordered; anterior angles 

 widely obtuse, not near neck; base arcuate, lightly sinuate on each side, bordered; 

 lateral border wide, bearing a few fine setules near anterior angles besides two 

 usual marginal setae. Elytra oval (5 x 3.5 mm.), convex; apical curve wide, 

 sinuate at extremity of ninth interstice ; border wide, reflexed ; striae strongly 

 crenulate. Tarsi with fourth joint of anterior wide, deeply excised; of inter- 

 mediate deeply excised, lobes short, outer more prominent than inner; of posterior 

 small, emarginate (not bilol)ed), outer side a little more prominent than inner. 

 Length, 7.5, breadth, 3 — 3.5 mm. 



Hah. — Great Lake ( Simson 1. Three specimens. 



