540 COLEOPTERA. 



Group Tknebrtoxidae. 

 Syrphetodes Pascoe. Man. N.Z. Coleopt., p. 351. 



4070. Syrphetodes thoracicus sp. nov. 



Opaque, fuscous, palpi, antennae, and tarsi infuscate red ; covered with 

 small, depressed, pale-tawny, obscurely rufescent, and infuscate squamae, 

 the pale ones somewhat concentrated on the ])Osterior slope and forming 

 small specks on the dorsum. 



Head narrower than thorax and, like it, without visible sculpture, 

 broadly impressed in front. Thorax in the middle only a sixth broader 

 than long, but with the subacute anterior angles <>xtending as far 

 as the centre of the eyes, it is only a little broader at the middle than 

 elsewhere, nearly straight toAvards the front, and gradually narrowed behind ; 

 base subtruncate, but somewhat sinuate near the acutely rectangular angles ; 

 disc moderately convex, obtusely elevated behind the middle, the sides 

 explanate ; under a strong lens some minute black granules can be seen. 

 Scutellum very transverse, each side dark and convex. Elytra oblong, 

 nearly thrice the length of thorax, almost double its width at the base, 

 with rounded but not at all tuberculate shoulders, their sides nearly straight, 

 moderately curvedly narrowed behind, with a short suuiral gaj? at the 

 extremity ; their sides somewhat explanate, each with ten large foveae ; 

 on each elytron outside the scutellum there is a moderate oblong nodosity, 

 another near the middle, and in line with these, on the top of the hind sloj^e, 

 there is a distinct nodiform elevation and a smaller one inside of it, there 

 are also two small ones below these last ; the surface towards the sides is 

 irregularly uneven ; the discal sculpture is not at all seriate and seems to 

 consist of punctures and granules. 



Antennae as long as the head and thorax, basal three joints with yellow, 

 coarser setae than the following ones, the terminal three with slender 

 pubescence ; basal joint thick and subquadrate, the second nearly similar 

 but smaller, third longest, more than double the length of preceding one, 

 ninth and tenth obconical. rather broader than eighth, the terminal elongate- 

 oval. Tiliiae nearly straight, with some pale spots. 



Though somewhat similar to S. nodosalis (2838) this is distinguishable 

 by its longer, narrower, and differently shaped thorax, rounded but not 

 nodiform shoulders, and indefinite dorsal punctation. In 2838, moreover, 

 the apex of the thorax is emarginate in the middle, its sides are widest 

 behind the middle and distinctly sinuate towards the posterior angles. 



Length, 11| mm. ; breadth, 5 mm. 



Mount Hope, near Nelson. My specimen was found by Vir. T. Hall on 

 the 14th February, 1915. 



4071. Syrphetodes pensus s]). nov. 



Subnitid, variegate, somewhat infuscate, but so covered with small, 

 depressed, fulvescent, and ferruginous squamae that it appears unusually 

 bright, elytral nodosities nigrescent and conspicuous ; clypeus and labrum 

 shining and, like the palpi and tarsi, chestnut-red, antennae and legs more 

 infuscate. 



Head narrower than thorax, broadly impressed between the distinctly 

 raised antennal tubercles. Eyes quite prominent. Thorax, excluding the 

 subacute anterior angles which project as far as the front of the eyes, 

 2^ mm. long by 4^ mm. broad ; apex with a deep median notch ; the sides 

 .explanate, widest some distance behind the middle, distinctly sinuate and 



