MYDROPHILIDAE. -13 



than others ; at each side, behind the middle, there are 4 or 5 series of coarser 

 punctures ; somewhat similar series can be seen on the posterior declivity, 

 in front of which the sutural striae become obsolete. 



Tibiae with several unequal spines at the extremity of the middle and 

 hind pairs, the former pair with less-prominent ones along the outside. 

 Posterior tarsi slightly compressed, joints 2— i with an elongate seta under- 

 neath, the claws not at all divaricate. 



Ufiderside castaneous, more rufescent at the sides. The metasternum 

 and abdomen with fine longitudinally rugose sculpture. The ventral seg- 

 ments bear distinct yellow hairs. 



Mesosternal process narrow, almost level with the front coxae. Inter- 

 mediate coxae nearly, the others quite, contiguovis. All the ventral seg- 

 ments about equal and on the same plane as the epipleurae, which throughout 

 are linear. Femora grooved underneath, very broad but much narrowed 

 towards the extremity, the posterior less narrowed, finely and distantly 

 punctuxed and bearing distinct yellow setae. Mentuni depressed, narrowed, 

 and rounded in front. Antennal furrows quite distinct along the inner 

 margin of the eyes. 



Rather broader than S. nitidus (2343), with more elongate and slender 

 posterior tarsi but thicker legs, rather different and more distinct sculpture, 

 the body darker and less aeneous. 



Antennae 9-articulate ; basal joint elongate, half of it concealed from 

 above ; 2nd thick and subglobular ; 3rd slender, narrowed towards its base, 

 shorter than 2nd ; 4-6 transverse : club triarticulate, its basal joint rather 

 broader than long, narrowed towards the base, 2nd transversely quadrate, 

 the terminal of the same width as the preceding one but distinctly longer. 



Length, If lines ; breadth, 1 line. 



Raurimu. January, 1909. A solitary specimen found amongst leaves 

 on the ground. As its allies are rare and difficult to find, my specimen was 

 carefully mounted and set out on its back, and the structure of the underside 

 studied before drawing up the description of the upper surface. The details 

 are recorded in full, and will be found useful to other students of this very 

 troublesome group. 



3033. Psephoboragus dispar sp. nov. Gen., Man. N.Z. Coleopt., p. 1402. 



Nitid, glabrous, fuscous, the sides of the head and thorax and the base 

 of the elytra broadly fusco-testaceous, as are also, more or less, the legs, 

 antennae, and palpi. 



Head closely and distinctly yet moderately finely punctured, more 

 coarsely near the sides. Thorax strongly transverse, its sides slightly curved 

 and gradually narrowed towards the obtuse front angles, posterior angles 

 almost rectangular, lateral margins fine but distinct ; disc much less closely 

 and more finely punctured than the head, the punctures on the broad pale 

 parts at the sides abruptly coarser, and with fine ones interposed, these 

 coarse punctures quite as large as those of the elytral series. Elytra sub- 

 oblong, curvedly narrowed behind ; they are evidently striate-purictate, 

 the stripe more definite behind and along the sides than on the disc ; inter- 

 stices minutely and distantly punctate, and moderately convex near the 

 extremity. Intermediate tibiae finely spinose externally. 



Underside fusco-niger, the sides of the abdomen with a silky greyish 

 gloss. Mesosternwn marginated in front and with a carina there, the pro- 

 cess before the coxae abruptly elevated and perpendicular. 



Less robust than P. signatus, and lacking the variegated aspect of that 

 species. The humeral angles seem more rectangular, the hind slope is 



