200 Prof. J. C. Schjodte on the Classification of Cerambyces, 



mon vestibule, and possesses near the fore end on each side a 

 glandulous sac producing a lubricatory secretion ; the second 

 joint is split on the back, supported by two narrow pieces of 

 chitine ending in a pair of delicately haired palpi. On the 

 piece of chitine which serves as a support for the genitalia, and 

 which is much longer in the females than in the males (reaching 

 in the former sometimes into the very thorax), are inserted four 

 pairs of retracting muscles, viz. one for the vagina, two for the 

 ovipositor, and one for the segments covering the cloaca or 

 common vestibule ; the vagina receives a pair of similar muscles 

 from these segments. 



There are eight abdominal gaiiglia, the foremost abdominal 

 ganglion being closely joined to the third ganglion of the thorax. 

 The cords uniting the abdominal ganglia are sometimes free 

 and unconnected with one another, sometimes both encased in 

 the same membrane. 



V. 



The following systematic table is confined to the genera re- 

 presented in the Danish fauna, but is founded, as the preceding 

 remarks show, on investigations embracing the whole family, as 

 far as the necessary material has been at my disposal. Con- 

 cerning the leading features of the classification, all that is 

 requisite has already been said, but I shall add a few remarks 

 concerning certain mostly European genera which, according to 

 my view, must find a place in the system different to that they 

 have hitherto occupied. In so doing I refer, amongst the nu- 

 merous modern books, to the useful work of Mulsant on the 

 French species of Cerambyces, because the classification adopted 

 at present is founded on this work, which may be considered a 

 completion of Latreille's last works. 



The exotic genera Tropidosoma, Tragocerus, Poscilopeplus, 

 CeroctenuSj and Dorcasomus are to be removed from the group 

 of Prionini to that of Cerambycini. Spondylis, which of late 

 has been considered the type of a peculiar group, is to be joined 

 to Prionini. Rosalia has free trochanters, and corresponds both 

 in outer shape and in all essential anatomical features to Calli- 

 dini, from which, however, it is distinguished by a tooth on the 

 back of the mandibles. I suppose that it is owing to merely 

 casual circumstances (as the size and colour, together with its 

 isolated position in the European fauna) that all authors seem 

 to agree in placing it at the side of Callichroma, the nearest 

 relatives of Rosalia being in reality the American genera Ortho- 

 stoma and Campocerus. Tetropium (Criomorphits) hitherto 

 placed in the group of Callidini, together with Asemum and 



