396 COLEOPTERA, 



The nearest species is C. tuberculatus, l)ut in it the punctation of the 

 head and thorax is more distinct, that of the elytra is coarser and more 

 irreguhir, near the sides particidarly, there are no striae, and the posterior 

 tubercles differ ; its whole surface is more glossy, and the interantennal 

 suture is obsolete near the sides. 



Length, 7^ mm. ; breadth, 3| mm. 



Stewart Island. Unique. Found by Mr. W. Tiail. 



3856. Cerodolus sulcisternus sp. nov. 



Convex, oblong - oval, moderately nitid, glalnous ; aeneo - niger, legs, 

 antennae, and palpi rufo-castaneous. 



Head nai'rower than thoracic apex, distinctly but not closely punctate. 

 Thorax nearly twice as broad as long, finely margined, very gently curvedly 

 narrowed anteriorly, almost straight and without any sinuation behind, 

 the apex subtruncate, only very slightly eraarginate, with obtuse but nearly 

 rectangular angles ; base widely bisinuate, its angles almost rectangular 

 and accommodated within the excavation jiist inside the humeral margin ; 

 its surface finely punctured, much more finely than the head, even more so 

 and more distantly towards the sides and base, with a slight transverse 

 impression between the middle and each side of the base. Scutellum trans- 

 verse, nearly smooth. Elytra slightly wider than thorax at the base, thrice 

 its length, gradiially narrowed and a little uneven but not nodose behind 

 the posterior femora, their margins most distinct near the base ; their whole 

 surface irregularly and finely punctate, minutely wrinkled behind ; each 

 elytron with 7 series of distinct punctures, about 20 in each row, these 

 become obsolete at the extremity, near the suture they almost form striae, 

 near the lateral margin there is a series of fine punctures. 



Underside nigrescent, shining, abdomen finely and moderately closely 

 punctured, prosternum nearly smooth, its process distinctly bisulcate but 

 with its hind margin entire. 



Antennae almost as long as the head and thorax, 3rd joint evidently 

 longer than 4th or 5th, 9th and 10th longer than broad but not quite as 

 long as the 8th, the terminal elongate-oval. 



C. genialis (2059) is certainly the nearest species, but it is rather lai-ger, 

 the thorax is wider at the base, and is more distinctly and closely pmictate, 

 and the antennae are stouter. The prosternal process also is different, 

 being more like that of C. aeneus (2060), in which, however, it is flatter 

 and simply depressed throughout, whereas in C. sulcisternus it is almost 

 elongate-oval, and the ridge between the grooves is on a lower plane than 

 the margins. 



Length, 6 mm. ; breadth, 2§ mm. 



Gordon's Knob, near Nelson ; 15th November, 1914. Four examples 

 foimd by Mr. T. Hall. 



3857. Mesopatrum dubium sp. nov. Mesopatrum Broun, Man. N.Z 



Ciileopt., p. 1355. 



Oblong, nearly plane above, subopaque ; varying from fusco-testaceous 

 to rufo-fuscous, tarsi and antennae of the latter hue, tibiae fusco-testaceous 

 above, dark fuscous near the extremity ; with many minute pale setae. 



Head seemingly closely and coarsely punctate when examined from 

 above but appearing granulate when viewed sideways, interantennal groove 

 distinct. Thorax in the middle neaily twice as broad as long, base widely 



