Coleoptera of Madagascar. 367 



This is a very broad species, nearly the form of S. ornatus, 

 with very prominent acute shoulders. Dull grey-brown, with a 

 spot in the middle of the base of each elyti-on, and an undulating 

 fascia a little behind the middle chocolate-brown, the spot and 

 the fascia both narrowly bordered with dull yellow, the apex of 

 the elytra is also of this obscure yellow colour. Eyes very 

 slightly prominent ; forehead with a narrow mesial channel. 

 Thorax rather narrow, one-fifth broader than long, a little more 

 narrowed in front than behind, with a fine mesial shining ridge 

 on the disc, and two shining punctures on each side. Scutellum 

 shining brown. Elytra at least twice as broad as the thorax, 

 one-fourth longer than broad, very convex posteriorly, punctate 

 striate. 



Madagascar (Crossley). 



CERAMBYCID^E. 



Sagrklola JlavicoU/.^, n. sp. 



Picea, griseo-pilosa, opaca, antennis brevibus tenuibus ; thorace 

 scutello pygidioque dense flavo-tomentosis ; elytris basi thorace 

 f latioribus, et 2| longioribus, brunneis, singulis postice bene 

 angustatis, paulo divei-gentibus, ad apicem truncatis, sutura 

 flavo-marginata ; femoribus basi apiceque brunneis. Long. 

 61 liu. 



Antennai slender, about as long as the elytra. Eyes elongate 

 ovate, entire, widely separated. Thorax scarcely longer than 

 broad, convex, densely clothed Avith yellow tomentum, con- 

 stricted at the anterior margin, slightly compressed laterally, 

 subparallel behind. Scutellum narrow triangular. Elytra light 

 brown, separately very much attenuated at the apex which is 

 truncate ; the sides obliquely deflexed, the suture is bordered 

 with yellow for the posterior two-thirds. The basal segment of 

 the abdomen and the pygidium are yellow. The femora are 

 dentate below, near the apex. 



MASTODODERA. 



I am unaAvare with whom it originated, but it seems to be a 

 generally received notion, followed even by Thomson and 

 Lacordaire, that M. lateralis, Guerin, with fulvous elytra and 

 l)lack sutural stripe, is only the male of M. nodicollis, King, 

 Avith fulvous elytra and black base. The two species are (piite 

 distinct, and the sexes of both are in the British Museum. The 

 males have the eleventh antennal joint elongate and constricted 



I- F 2 



