new Species of Histericlcic. 145 



and more distinct along their bases; the prosternum is not 

 striate ; the mesosternum is emarginate and the marginal 

 stria complete ; the anterior tibiae are 3-dentate. 



This species is very similar to M. pilicoUis, Sch. It differs 

 by the form of the external thoracic stria, which is not close 

 to the edge beiiind the anterior angle, by the internal stria 

 being more sinuous laterally, and by the tine punctuation of 

 the pygidia. 



Hab. Mombasa, E. Africa. 



Ilister maroccanus, Sch. Ent. Nachr. xiii. p. 353 (1887). 



The above was described as a variety of H. amplicoUis, Er., 

 but I think that it is a distinct species ; it differs by the very 

 narrow interstice of the lateral thoracic stria and by the fine 

 surface-punctuation, which resembles that of H. gnecus, 

 Brulld. 



Ilister amplicollis, Er., 18^0, = thoracic us, Payk., 1811, 

 n. syn. 



As no species resembling Paykull's figure of thoracicus has 

 been found in America, I sent an example of amj)licoUis to 

 Prof. Yngve Sjostedt, who has compared it with PaykulPs 

 type of thoracicus, and he has found that it corresponds except 

 in a slight variance in the denticulations of the anterior tibia?. 

 Paykull's figure of thoracicus represents ampficoIUs very well, 

 and there has been evidently a case of mistaken locality. The 

 outer thoracic stria in the species is often complete, but I 

 selected one with a short stria to send to Stockholm, as it is 

 so figured in PaykuU^s monograph. 



Ilister vadatus, Lewis, 1908. 



Ovalis, convexus, niger, nitidus ; fronte stria antice recta ; pro- 

 noto bistriato ; elytris striis 1-4 integris, 5 obsoleta, suturali 

 ntrinqiie abbreviata ; propygidio pygidiocjue punctatis ; meso- 

 steriio stria marginali in medio interrupta ; tibiis anticis 3- 

 dentatis, apicali dente immani. 



L. 7 miU. 



Oval, convex, black and shining ; the head, frontal stria 

 complete, straight anteriorly, and rounded off on either side; 

 the thorax, marginal stria very fine, two lateral well-marked 

 and parallel to each other, tiie outer stria terminates behind 

 the eye, inner coirtinued beliind tlie head ; the elytra, humeral 

 stria wanting, dorsal 1-4 complete, 5 indicated by a few apical 

 points, sutural abbreviated at both ends, the ends turn away 



