OXYTELIDAE. 485 



seven well-marked, apparently punctate, dorsal striae, some are obsolete 

 at the base, but the punctures there are quite definite ; interstices 

 moderately convex, the suture and adjacent two are slightly swollen, but 

 not tuberculate at the extremity. Hind-body twice the length of elytra, 

 not quite as broad at the base, its punctation moderate and shallow ; 

 lateral margins strongly reflexed, within these each of the basal four 

 segments has a minute flattened granule, the fifth is carina te along the 

 middle and ends as a narrow strongly elevated tubercle. 



Tibiae with numerous fine setiform spines ; the posterior pair evidently 

 curved, slightly thickened towards the extremity, minutely subserrate 

 inwardly. 



Antennae stout, as long as head and thorax, the basal two joints 

 obconical, the second about half the size of the first, the next moniliform 

 and distinctly broader ; fourth and fifth transversely quadrate, abruptly 

 enlarged, about double the bulk of the third ; sixth hardly any larger than 

 third, quadrate ; joints 7-9 oblong, rather narrower, tenth shorter, eleventh 

 ovate. 



More slender than C. sculptipennis (1838) and dift'ering in several details, 

 more especially in the form of the posterior tibiae, which in the same s^x 

 of 1838 are quite straight. The male of C. optandus (2457) may be at 

 once recognized by the pair of large elevations near the middle of the 

 elytra, the pair of small tubercles at the extremity of the second and third 

 dorsal segments, the depression across the base of the third, and the simple, 

 more Coprophilus-\ike antennae. 



(J. Length, 6J mm. ; breadth, 1| mm.'* 



Unknown land west of Mount Algidus. Mr. T. Hall found the specimen 

 on the 30th October, 1913. 



3991. Coprostygnus picipennis sp. nov. 



Nitid, castan«o-rufous, elytra nigro-piceous, palpi and legs rufo-testaceous. 



Head fusco-rufous, nearly as broad as thorax, distinctly but not coarsely 

 punctured. Thorax slightly broader than long, finely marginate, verv 

 little wider and rounded at the middle than elsewhere, gradually narrowed 

 towards the rectangular posterior angles ; distinctly but very irregularly 

 punctured, some parts nearly smooth, with a large impression near each 

 side, two basal and a pair of oblique frontal ones, all rather shallow and 

 not sharply limited. Scutellum distinctly punctate. Elytra oblong, sub- 

 truncate behind, a third longer and broader than thorax ; their striae deep 

 and punctate, interstices convex, without tubercular inequalities. Hind- 

 body like that of C. curvipes but less definitely sculptured, in some lights 

 appearing minutely granulate ; the slightly raised, subangulate basal por- 

 tion of the first exposed segment nearly smooth, just behind that part there 

 is a small transverse tubercle, on the extremity of the fifth there is a short, 

 narrow upright tubercle. 



Tibiae straight, the anterior pair thicker than the others, all with more 

 or less fine spiniform setae on the outside. 



Antennae as long as head and thorax, moderately stout, with yellov/ 

 pubescence and slender setae ; basal joint double the size of the obconical 

 second ; third obtusely triangular, evidently broader at its apex than the 

 second, slightly broader than the transverse fourth or fifth ; seventh slightly 

 longer than its quadrate predecessor, joints 8-10 transversely quadrate, 

 the terminal somewhat elongate-conical. 



