1906.] COLEOPTERA OP THE GENUS SCIOBIUS. 261 



surface impressed, tricarinate, the carinte straight and parallel, 

 the punctuation and pubescence as on the head. Antennce very 

 long and slender, piceous, with fine grey pubescence ; scape slender, 

 subcylindrieal, slightly curved and abruptly clavate, f unicle v\^ith 

 the third joint much longer than the first. Prothorax i-ather 

 transverse, rounded at the base, narrower and truncate at the 

 apex, sides slightly rounded, broadest about middle ; upper surface 

 convex, closely set with low rounded granules, but with a more or 

 less distinct smooth central line : colour black, the granules bare, 

 the interstices with fine grey pubescence bearing an evanescent 

 yellow powdering, which is denser at the sides and along the base. 

 Elytra ovate, a little broader than the prothorax at the base, which 

 is jointly sinuate ; sides rounded, broadest rather before middle, 

 narrower in the c? ; upper surface convex, with distinct striiB, 

 which, according to the incidence of the light, appear to contain 

 either i-ows of subquadrate punctures or rows of small granules, 

 both of which vanish on the declivity ; intervals slightly convex, 

 of approximately equal width and evenly raised, almost inipunctate 

 and without tubei'cles, with thin very fine pubescence bearing a 

 yellowish or reddish powder, which is easily removed and is only 

 observable at the sides and apex, but in perfect specimens it would 

 doubtless occur all over the disk. Legs moderately long and 

 slender, black or piceous, with fine grey pubescence ; the anterior 

 pairs of femora more strongly clavate in the S ■, the anterior tibiae 

 scarcely curved inteiiorly and similar in the two sexes; the first 

 joint of the tarsi broad and elongate, about as long as the next 

 two together. 



Type in the Stockholm Museum. 



Natal : Howick {Br. F. Dimock Brount). 



The unusual development of the fii'st tarsal joint is a good 

 distinctive character. I have seen only three examples of the 

 species. 



*23. SCIOBIUS MARGINATUS Fahr. 



S. marginatiijS Fahr. op. cit. p. 28. 



Long. S 8|-8i, $ ^ ; lat. S 3f , $ 4| mm. 



Head almost as long as broad, vertex convex and finely aciculate 

 forehead shallowly punctate and with a broad median impression ; 

 colour piceous or ferruginous with sparse pale pubescence, forming 

 a denser ring round the eyes, which are slightly prominent. 

 Rostrum longer than broad, basal mai'gin distinctly angulate, 

 sides parallel to near apex, gense slightly and roundly dilated in 

 both sexes ; upper surface slightly impressed, distinctly tricarinate, 

 the outer carinfe parallel to near apex, then rapidly divergent, the 

 interspaces finely rugose and with thin pale pubescence. Antennoi 

 moderate, piceous, with grey pubescence ; scape subcompressed, 

 sti'ongly curved and gradually dilated to apex ; f unicle slender, 

 third joint longer than first. Prothorax in d" a little broadei- 

 than long, ti-uncate at base and apex, the latter narrower and 

 broadly but shallowly constricted; sides almost straight, broadest 



IS* 



