WEST AFRICAN IIISTERIDAE 



401 



elytris striis humeralibus nullis; ];)ro2yygidio punctaio ; 

 mesosterno emarginato, stria marginali integra; tibiis anticis 

 4'dentatis. - Long. 3 V4 ^^iH- 



Oval, rather convex, black and shining, antennae and legs brown; 

 the head has a biarcuate stria between the eyes and a semicircular 

 stria in front of it but it is not connected, there is no regular 

 marginal stria; the thorax, marginal stria is very fine laterally 

 but is more conspicuous at the anterior angle and behind the 

 head, the lateral stria is more marked and ceases behind the 

 anterior angle , there is a rather broad band of scattered points 

 along the sides; the elytra, there are no humeral striae, 1-3 dorsal 

 are complete , 4 and 6 are apical and of equal length and pass 

 beyond the middle of the dorsum, the sixth is nearest the suture 

 anteriorly, is dimidiate ; the propygidium is sparsely and rather 

 coarsely punctate ; the pygidium, the points are smaller and con- 

 fined to the basal area; the prosternum, anterior lobe is sparingly 

 punctured, the points being of varying sizes, marginal stria is 

 interrupted in the middle , keel is bistriate but the striae are 

 broken or evanescent before the coxae and anteriorly they appear 

 to meet but not markedly so; the mesosternum in rather widely 

 emarginate behind the keel and the marginal stria is well-marked 

 and follows the contour of the edge and there is a transverse 

 stria along the metasternal suture; the anterior tibiae are 4-dentate. 



Hab. Basilé, Fernando Po Island. Two examples only. 



I^a-ronialvis loiig-icorais sp, n. 



Oblong 0-ovatus , subcoìivexus , niger, nitidus, imdiqite 

 punctulatus; antennis pedibusque piceis; fronte stria integra; 

 thorace stria marginali antice late interrupia ; pygidiis 

 leviter punctulatis. - Long. 2 \ ^ ■ ^ mill. 



Oblong oval, rather convex, black and shining, finely not 

 closely punctulate above; the head, a little depressed anteriorly, 

 frontal stria complete and semicircular in front, tlie antennae are 

 rather long especially the scape which is slender, the second basal 

 joint is as long as the next adjoining three ; the thorax , the 

 marginal stria is rather widely interrupted behind the neck ; the 

 elytra are punctured like the thorax; the propygidium and pygi- 



Ann. del Mus. Civ. di St. Nat. Serie 3.», Vol. U (25 Agosto 1906). 26 



