mn.] ^57 



DESCRIPTrON OF TWO NEW SPECIES OF DIG LOSS A rDIGLOTTAJ 

 FROM THE ISLAND OF PERIM. 



BY MALCOLM CAMERON, M.B., K.N., P.E.S. 



DlQLOSSA TESTACEA, n. sp. 



Elongate, parallel, abdomen not constricted at the base, clear testaceous-yellow, 

 thickly clothed with yellowish pubescence and vei-y finely alutaceous on the fore 

 parts. Antennae, palpi, and legs testaceous. Abdomen shining, sparingly pubescent 

 finely |)unctulated, apical margin of 4th, and whole of 5th segment, black. 



Length, 2 — 2^ mm. 



Head almost the breadth of the thorax, very finely alutaceous, thickly covered 

 with yellowish pubescence ; eyes large ; vertex impressed in the ? . Thorax 

 trapezoidal, subcordate, a little broader than long, very finely alutaceous and 

 thickly pubescent. In the <? a fine impressed line runs across the disc behind and 

 parallel to the anterior margin. In the 9 the disc is furnished with a longitudinal 

 oval impression in the middle line, which is better marked in some specimens than in 

 others. Elytra a little longer than the thorax, squai-e, the sculpture and pubescence 

 finer than that of the thorax. Abdomen nearly as broad as the elytra, shining, 

 finely punctulated, pubescence not thick ; apical margin of 4th, an I whole of 5th 

 segment, black. Sexual differences : <J with 7th dorsal segment de ply emargi- 

 nate on each side, thus forming two strong lateral teeth separated by a broad 

 median lobe ; 7th venti'al segment with four teeth, the external short and stout, the 

 internal long and pointed ; antennae with 7th, 8th, 9th, and 10th joints slightly 

 transverse. In the ? all the antennal joints are longer than broad, and the vertex 

 and disc of thorax are more or less impressed. In both sexes the 1 Ith joint is about 

 twice as long as broad. 



Hfth. : Island of Perim, February, 1903, in seaweed. 



DiGLOSSA SUBTILISSIMA, n. sp . 

 Narrow, elongate, pale testaceous, abdomen constricted at the base, clothed 

 with yellowish pubescence and very finely alutaceous. Antennae, palpi and legs 

 pale testaceous. Abdomen rather shining, pale testaceous, 4th and 5th segments 

 black, finely punctulated, scantily pubescent. Length 1 1 mm. 



Head as broad as thorax, very finely alutaceous and moderately pubescent ; 

 eyes large ; 2nd joint of antennae shorter than 1st, 4th to 10th, about as broad as 

 long. Thorax longer than broad, trapezoidal, subcordate, sculpture and pubescence 

 as on head. Elytra shorter than the thorax, quadrate, very finely alutaceous and 

 pubescent. Abdomen constricted at the base, shining, very finely punctulated and 

 less pubescent than the fore parts, 4th and 5th segments black. 



Hah. : Island of Perim, with the preceding. 



This very fragile insect is at once distinguished from D. testacea 

 by its much smaller and narrower build, the contracted abdomen, and 

 the scantier pubescence. But three species of the genus have up to 

 the present been described, the two well-known European examples 

 and one from Celebes, I), celebensis, Fvl. (Ann. del Mus. Civ. di 



