51. 

 PLATYPUS CYLINDRUS. 



Order Coleoptera. Fam. Bostricini Lat. Bostricidse Leach. 



Type of the Genus Platypus cylindrus Herbst. 

 Platypus Herbst, Lat. Bostrichus Fab. Scolytus Oliv., Pans. 



Antemue inserted close to the base of the clypeus, not longer 

 than the head, 6-jointed, 1st joint elongate, curved ; 2nd short, 

 thick ; 3rd and 2 following transverse, club large solid oval 

 very much compressed punctured, annulations none or obsolete 

 (f. 6.) 



Labrum none ? 



Mandibles exserted trigonate very strong acute (2.) 

 Maxilla broad at the base, attenuate upwards, somewhat acute 

 at the apex, which produces strong bristles as well as the inter- 

 nal edge ; Palpi short robust 3-jointed conic, terminal joint short 

 (3.) 



Mcntum very small oblong, narrowed at the base (-i. a.), where it 

 appears to be attached to the surface, not the edge, of the cover- 

 ing of the underside of the head (b.) : Palpi very short 3-joixited, 

 the terminal joint being the longest (c.) 

 Head globose very obtuse before, appearing vertical. Eyes ovate. 

 Thorax lo)ig cylindric, excavated on the sides to receive the anterior 

 femora. Body cylindric linear. Elytra truncated at the apex and 

 very hairy, with a small tooth on the Brd stria, and an obtuse spine 

 on each side near the external margin behind. Legs long, anterior 

 the longest curved inward, posterior placed very far behind ; anterior 

 coxfe very large. Thighs robust. Tibiae short compressed tubercu- 

 lated, anterior deeply striated transversely on the outside, terminated 

 by a strong spine. Tarsi slender, entire, longer than the femora and 

 tibia united, 'a -jointed, 1st joint very long, 4:th very minute. Claws 

 slender (5. afore leg). 



Cylindrus Herbst Coleop. 5. tab. 49. /. 3. Fab. Ikt. Syst. t. 1. 

 pars 2. p. 364. n. 2. Cylindricus Oliv. Ent. t. 4. n. 78. pi. 1. 

 fig. 2. a. b. Lat. Gen. Crust, ^x. t. 2. p. 277. 

 Shining reddish-brown ; head, thorax and elytra towards the 

 apex inclining to black. Legs castaneous. Antennae ferruginous. 

 Head punctured, flat and finely rugulose in front. Thorax 

 slightly punctured, back smooth, with an impressed line in the 

 centre behind, posterior margin produced in the centre. Elytra 

 punctured, with 8 deep striae, forming as many alternate elevated 

 ribs. Anterior thighs towards the base angulated on the internal 

 margin. 



/^ In the Author s and other Cahinets. 



\ 



This curious insect, so diiferent in appearance to any of its 

 congeners, belongs to the same family as Scolylm destructor 



