SCOTT— COLEOPTERA, LAMELLICORNIA AND ADEPHAGA 247 



Loc. Seychelles. None of the specimens were found in the mountain-forests, but 

 all in the low country or at the coast, frequently in bare and dry places where the subsoil 

 is exposed : Mah^, Silhouette, Praslin, Bii'd Island : previously recorded from Mah^ by 

 Kolbe and Fairmaire. Coetivy, 1905. Farquhar Atoll, 1905. Amirantes, 1905 : Eagle 

 and Desroches Islands. Aldabra, 1895 (Voeltzkow). Madagascar. 



Pentagonica Schmidt-Gobel, Faun. Col. Birmanise, 1846, p. 47. 



30. Pentagonica mahena, Kolbe. 



Pentagonica mahena Kolbe, Mitt. Zool. Mus. Berlin, v. 1910, p. 18. 



No specimen of any species of this genus was obtained by the Percy Sladen Trust 

 Expedition. 



Loc. Seychelles : Mah^ (Brauer). 



Chl^nius Bonelli, Obs. ent., i. 1809, tabl. synopt. 



31. ChlcBuius hisignatus, Dejean. 



ChlcBnius hisignatus Dejean, Spec. Col., ii. 1826, p. 303 ; Alluaud, Liste Coleopt., 

 p. 31 ; Kolbe, Mitt. Zool. Mus. Berlin, v. 1910, p. 17. 



8 specimens, 4 of which have the yellow spot on the posterior part of the elytra, 

 while in the other 4 it is completely absent. Kolbe {I.e.) remarks that Fairmaire had 

 previously stated the species to be represented in the Seychelles by a form without the 

 yellow spot, but that the specimens obtained by Brauer possessed it. Thus, in the series 

 before me, the two forms are equally represented. I have examined the wings of two 

 specimens (one belonging to the form with a spot on the elytron, and one to that in which 

 it is absent), and find them 1 1 mm. long, while the elytron is about 7 mm. long. 



Loc. Seychelles. Mah^ ; from the low cultivated country, various localities : pre- 

 viously obtained by Brauer, etc. Mascarene Islands, Comoro, Madagascar. 



? Hypolithus. 

 Hypolithua Dejean, Spec. Col., iv. 1829, p. 166. 



Of the following 3 species, the first {H. sechellanim Kolbe) was described as a 

 Siopelus, and the remaining two are sometimes referred to that genus. They do not, 

 however, agree with the original description, nor with the type-species of Siopelus, in one 

 particular, namely with regard to the presence or absence of a median tooth in the 

 emargination of the mentum. Siopelus was described by Murray, Ann. Mag. Nat. Hist., 

 ser. 3, 1859, vol. 3, pp. 27, 28. Murray gives as the first diagnostic character (on p. 27) 

 " mentum profunde emarginatum, sine dente" : and on p. 28, in the remarks following the 

 diagnosis, he again mentions that the mentum has no median tooth. I have examined in 

 the British Museum the original species, S. calabaricus, described by Murray {op. cit. 

 p. 28), and also S. venustulus, in both of which the median tooth is quite absent. Bates 

 also, in his description of ^. ferreus from Ceylon (Ann. Mag. Nat. Hist., ser. 5, 1886, 

 vol. xvii. p. 76), definitely states that the mentum of that species is destitute of a median 

 tooth. On the other hand, a small but distinct median tooth is present in the specimens 



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