54 ' ' [August; 



TEOPICAL AFRICAN COLEOPTSEA; CHIEFLY FEOM THE 



ZANZIBAR MAINLAND. 



BY H. W. BATES, F.R.S., &c. 



{Continued from page 13). 



Sub-fam. OODIN^. 

 Sph^koodes impunctatus, sp. n. — S. striate, Dej., Chaud., simillimus sed 

 differt striis siinpUcihus, etc. Ovatus, convextis, niger politus thorace castaneo, 

 palpis melleo-Jlavis, antemiarutn articulis 1 — 3 pedihusque testaceo-rufis : 

 thorace margine basali late arcuato angulis posticis acutis, toto IcBvi : elytris 

 acute striatis interstitiis planis, stina 1'"'* et 2"*^" basi conjunctis ibique absque 



foveola, striola scutellari haud impressa seriatim punctulata. 



Long., 8 mm., S • 

 liibe, near Mombas (llr. Wakefield) . 



Differs from the only other described species in the sharply- 

 incised and fine impunctate striae, the absence of an umbilicated 

 puncture at the junction (at the basal fold) of the Ist and 2nd striae 

 and in colour ; the thorax being dark reddish-castaneous, and the 

 palpi and legs pale : the under-side of the body is more or less 

 reddish-piceous. 



Sub-fam. ANGROMENINM. 



Megalonychtjs sculptilis, sp. n. — M. rugicoUi, Laferte, affinis. Bo- 

 bustus, niger nitidus, palpis antennis et tarsis testaceo-rujis ; capite Icevi : 

 thorace magno, orbiculari sed postice magis quam antice angustato, angulis 

 posticis nullis, medio basi sinuato, disco discrete, lateribus rugoso-punctatis ; 

 elytris prope apicem profunde et longe sinuatis, angulo suturali obtuso, pro- 

 funde striatis vel sulcatis striis crebre punctatis interstitiis vix convexis S'** 

 tri-vel quadrifoveolato 7 — 9 confuse punctatis. Long., 15 mm., <J . 



Mpwapwa (Mr. Laat). 



Megalonychus excisus, sp. n. — M. rugicolli, Laf., affinis. Niger, 6, 

 nitidus, ? , opaca, antennis basi palpis pedibusque obscure rufo-piceis : thorace 

 magno late ovato angulis j)ost ids nullis, disco fere Icevi lateribus rugoso punc- 

 tatis explanato-reflexis : elytris elongato-oblongo-ovatis apice profunde p arum, 

 oblique sinuatis, angulo suturali rotjindato, striis acute incisis crebre punctu- 

 latis, interstitiis planis 3«o tripunctato, exterioribus et margine explanato 

 punctulatis. Long., 14 mm., <? ? . 



Mamboia {Mr. Last). 



This and the preceding species are of more elongate form, with 

 the elytra relatively longer, than ilf. rz<^?coZZi>, Laf erte, and the sutural 

 apex is destitute of the tooth-like prominence which distinguishes 

 M. rugicollis. The outline of the thorax is very similar, and the base 

 of the elytra is arcuated on each side with obtuse humeral angles. 



