1900.] INSECTS AND ARACHNIDS FROM SOMALILAND. 23 



parce granulatis ; antennis ferrugineis, articulo prvrno nigra, 

 fusco-hirto ; tibiis anticis acute quadridentatis, cdiis serratis. 

 Long. 21 mm., lat. 13 mm. 



Type in British Museum. 



The single specimen was obtained in Central or Eastern Somali- 

 land (1897). This species is allied to T. denticulatus Oliv., which 

 also occurs in Somaliland, but it is considerably larger and relatively 

 broader, the widely dilated margins of the elytra making their 

 outline almost circular. The elytral costse consist of irregular 

 tubercles which are separate at the base, more or less confluent 

 on the disc, and small and scattered towards the apex; the alter- 

 nate rows only of these reach the basal margins of the elytra. 

 The anterior tibia is armed with four acute teeth placed at right 

 angles to its axis and regularly increasing in size towards its 

 extremity, the last being very sharp and prominent. T. funestus 

 Lansb., a W. African species, appears to be nearly related to this 

 insect, but is smaller and narrower, T. expansus being one of the 

 largest at present known in the genus. 



ScaraB/Eus isidis Cast. 



North Central Somaliland, Bally Maroli in the Haud District. 

 Two examples, June 25, 1897. This occurs throughout the 

 Nile Valley and also in S.W. Asia. 



ScaraBjEUS bettoni Waterh. Ann. & Mag. Nat. Hist. (6) xx. 

 p. 553 (1897). 



One specimen found July 26, 1895, at "Whardi Datal, North- 

 west Somaliland. It was recently discovered by Mr. Betton in 

 British East Africa. 



G-ymnopleurus LjEVIS Arrow, sp. n. 



Gr. splendenti valde affinis, sed colore, et sculptura minus evidente, 

 distinctus, fusco-niger, Icevis, opacus; pedibus antennisque fusco- 

 rvfis, harum clavis ferrugineis; capite subtiliter granidato, 

 antice acute quadridentato ; prothorace convexo, subtiliter 

 coriaceo, linea media losvi angusta, basi bi-impressa, lateribus 

 parum grosse foveolatis, marginibus lateralibus anguite rejiexis 

 postice obtuse angulatis ; elytris subtllissime disperse granu- 

 latis et vix striatis, absque plicatidis ; pedum anteriorum tibiis 

 serratis, dentibus tribus terminalibus acutis et longissimis 

 munitis, femoribus emarginatis et dentatis. Long. 16 mm. 

 Type in British Museum. 



One example (1895 or 1897). This insect is almost black 

 without a trace of metallic lustre. The surface is very smooth, 

 with a fine granulation which is most apparent on the head and 

 exceedingly minute on the elytra. The striation of the latter is 

 almost obsolete and only visible under a lens. The three teeth 

 upon the anterior tibiae are very long and acute. 



Q. lugens of Eairm. is very near this species, but is more nearly 

 related to G. splendens Cast., if not merely a variety of it. 



