SCOTT— COLEOPTERA, LAMELLICORNIA AND ADEPHAGA 



257 



uncertain whether it may not be referable to some species which I have not seen, and have 

 therefore thought it best not to describe it as new. 



The length is about r5 mm. Form somewhat narrow and elongate-oval, thoraco- 

 elytral angle slight. Shining ; head, prothorax, antennae and legs reddish-testaceous ; 

 elytra brown, without distinct markings and almost concolorous, slightly darker at the 

 base and along the suture, and paler at the shoulders. Head fiiiely puncfculate with a 

 slight elevation on either side at the base of the clypeus ; pronotum finely and not closely 

 punctured, the punctures stronger at the base, the plica on either side well-marked and 

 angular, continued on to the elytron as a groove of about the same length ; elytra fairly 

 strongly and closely punctured, with excessively short and scanty pubescence (scarcely 

 visible except with a compound microscope) ; sutural stria absent, replaced by a line of 

 punctures. Beneath, ferruginous with posterior coxae and base of abdomen infuscate : 

 posterior coxse strongly but not very closely punctured. 



Loc. Aldabra: "Wilson's Well," Takamaka, X. 1908 (Fryer). 



Hyphydrus Illiger, Mag., i. 1802, p. 299. 



49. Hyphydrus impressus, Klug. 



Hyphydrus impressus Klug, Ins. Madag., Abb. Ak. Wiss. Berlin, 1832, i., p. 136 ; 

 Sharp, On Dytiscidae, p. 380; Regimbart, Mem. Soc. ent. Belgique, iv. 1895, p. 57; 

 Alluaud, Liste Coleopt., p. 58 ; Kolbe, Abh. Senckenb. Ges., xxvi. 1902, p. 574. 



6 specimens. There is a great development of the light mai'kings on the elytra : this 

 species is very variable in that respect, a specimen from Madagascar in Dr Sharp's collection 

 having the middle and posterior parts of the elytra almost entirely dark. Regimbart {I.e.) 

 mentions that certain specimens from Boma (Congo) were very dark, some even having 

 the elyti'a " entiei'ement noirs, sauf une etroite bordure humerale." 



Loc. Aldabra: " Wilson's Well," Takamaka, X. 1908 (Fryer); 1895 (Voeltzkow). 

 Madagascar, Mascarene Islands, W. and S. Africa. 



CoPELATUS Erichson, Gen. Dytisc, 1832, p. 38. 



50. Copelatus gardineri, sp. nov. 



^?. Elongato - ovalis, angustus, nigro-piceus, capite prothoracisque marginibus 

 lateralibus rufescentibus, elytris vitta basali transversa angusta ad suturam vix interrupta 

 humerosque fere attingente, et macula subapicali, testaceis ; corpore subtus rufo-piceo, 

 antennis pedibusque testaceis plus minusve infuscatis ; capite prothoraceque pertenuissime 

 punctulatis, hoc utrinque ad basin plus minusve obsolete striolato ; elytris pertenuissime 

 baud dense punctulatis, striis nullis, seriebus punctorum duabus distinctis, et duabus aliis 

 minus distinctis, postice serie submarginali punctorum tenuiter pubescentium. Long, 

 coi-p. 4| — 5^ mm. 



S tibiis anticis ad basin curvatis intusque emarginatis, tarsorum anticorum mediorum- 

 que articulis 1 — 3 dilatatis et articulis ultiniis parum elongatis. 



Elongate, narrow, moderately convex, extremely finely reticulate and extremely 

 finely but not closely punctulate ; pitchy-black, with head and sides of tliorax reddish, with 



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