256 MESSRS. C. J. GAHAN AND G. J. ARROW OX THE [NoV. 3, 



libris, cequalihus, tibiis anticis brevibus, validissime bidentafis, 

 tarsis omnibus longis, unguiculis integris ; alls imperfectis. 



Long. 10 mm. 



There are three specimens of this very anomalous little beetle, 

 which seems to form a second species of M. Fairmaire's genus 

 Apterodema, although it is not altogether impossible that it may 

 have no affinity with it, since the genus was constituted from a 

 single specimen in such a condition, as the author says, that 

 neither mouth nor antennae could be seen. Enough is said, how- 

 ever to show that in declaring its close relationship to Liogenys, 

 one of the Macrodactylides, M. Fairmaire has entirely mistaken 

 its systematic position, aU the characteristic features of the 

 Macrodactylides being absent. The specimens before me, which, 

 like M. Fairmaire's specimen, are females, represent a veiy 

 isolated type, but can only be placed in the Sericoi'des. The 

 elytra are not fused together as in Apterodema acuticollis Fairm., 

 but the wings are partially atrophied. There are six free and 

 equal abdominal segments. The labrum is free, subvertical and 

 emarginate, and the labium consolidated, broad, and slightly 

 concave in front. The antennae are nine-jointed and the claws 

 simple, 



A. paraguayensis is rather larger than the Patagonian insect, 

 of a dark red colour, with the margins of the elytra vaguely 

 darker, the dark sutural margins forming a broad band at the 

 scuteUum, which they enclose, but narrowing behind. The pro- 

 thorax is broad behind, and the posterior angles slightly produced 

 as in J., acuticollis. Tlae only clothing consists of stiff setae along 

 the sides and upon the legs. The sculpture is quite different to 

 that described by M. Fairmaire. 



I may advantageously take this opportunity of making an 

 observation upon an allied South American genus. Lacordaire 

 and Germain many years ago pointed out the probability that 

 the genus Accia of Curtis, hitherto known only from a single 

 female specimen in the British Museum, may prove to be in- 

 separable from Maypa Blanchard. Having lately been able to 

 examine a male, I can now definitely confirm this supposition. 

 The genus should be called Sericoides, into which must be merged 

 Accia, Maypa, and Macrosoma. 



Macraspis brasiliensis, sp. n. 



Niger, vix nitidus, supra ubique creberrime coriaceo-punctatus ; 

 proihoracis lateribus subtiliter rugosis ; scutelli medio longi- 

 tudinaliter leviter lineato-depresso ; pygidio robique transverse 

 strigoso ; abdominis medio vix punctata, nitido, processu 

 mesosternali recto, ha ad fortiter clavato ; tibiis intermediis 

 subtus fere rectis. $ elytrorum. lateribus medio hand expla- 

 natis. 



Long. 20-24 mm. 



Hob. Brazil : Ega, &e. ; Paraguay : Sapucay. 



