420 Mr. C. O. Waterhouse on new Longicorn Coleoptera. 



XLVI. — Descriptions of new Geneva and Species of Longi- 

 corn Coleoptera{J^?im\\(\iQ) from Madagascar. By CharleS 

 O. Waterhou^e. 



The species here described were received from the Rev. W, 

 Deans Cowan, and belong to the same series as the other 

 Longicornia recently described by me in this journal {ante^ 

 p. 326). They were collected in the neighbourhood of Fiana- 

 rantsoa. 



Lamiidae. 



LASiot;ERCis, n. gen. 



General build of Dicliostates. Antennas shorter than the 

 body ; the hrst joint elongate, gradually but not much enlarged 

 towards the apex; the third joint scarcely as long as the first, 

 the fourth about the same length as the first, the following- 

 joints much shorter. Thorax transverse, with a conical 

 tubercle in the middle of the side, and with two rather acute 

 tubercles on the disk. Elytra oblong, rather de])ressed at the 

 suture, shoulders nearly rectangular ; each elytron with a 

 strongly marked, slightly oblique elevation near the scutelluni. 

 Legs stout, the tibiae with a tuft of hair on the outer edge at 

 the apex. Intercoxal process of the prosternum very broad, 

 arched. Mesosternum rather broader, sloping down. 



This genus shoidd be placed next to lianova, with which it 

 agrees in the form of the sterna, but difiers in the elongate 

 basal joint of the antenna?, in the curious prominence at the 

 base of the elytra, &c. 



Lasiocerci.s fisciata, n, sp. 



Nigra, toinento fere alLo deuse tecta ; antcnnis, froute, thoracis 

 disco, elytrorum fascia regioneque seutellari, fcibiarum apice tar- 

 sisqiie uigris. 



Long. 6 lin. 



The bases of the third and following joints of the antennae 

 are whitish ; the joints are beset with few but long black 

 hairs. The thorax has a small round black spot at each 

 anterior angle ; the discoidal area (including the dorsal tuber- 

 cles) is black, Avitli a slight mixture of brown posteriorly ; this 

 mixture of black and brown also occupies the space between 

 the basal elevations of the elytra. Near the apex of the elytra 

 there is a broad black fascia, having its basal margin angu- 

 lated and margined with purer white ; there is a small black 

 spot about the middle of the side, and immediately below this, 

 on the disk of the elytron, is a very small raised brown dot^ 



