20 Descrijitions of new exotic Coleoptera. 



apice nigricantibus, reliquis colore pallidiori saturatis. Thorax 

 ruber, ruo"osus, antice et postice linea nigra elevata marginatus, 

 dorso niaculis binis atris oblongis notatus. Scutellum nigrum. 

 Elytra rubra, sutura, marginibus lateralibus, e medio disci ad 

 apicem nigricantibus, vittisque duabus nigris notata, vitta in- 

 terna basi interrupta. Corpus subtus atrum, thorace rubro, 

 abdomine nigricante. Pedes rubro-corallinee femoribus apice 

 nigris, geniculisque concoloribus. 



This singular insect inhabits the vicinity of Omlecope Dawar in 

 the East Indies, and was captured on a prickly thorn by Captain 

 Smee, from whose cabinet it is described. Cerambyx crassicornis, 

 Olivier, is the only species allied to it, the locality of which is not 

 given by that author ; I have little hesitation, however, in asserting 

 it to be an Indian species. 



DESCRIPTION OF THE FIGURES. 



Note. — The line placed near some of the insects indicates their natural length. 



PLATE I. 



Fig. 1. Adelotopus Gyrhioides, magnified. 1 a. The under side of the insect. 

 1 b. The under side of the head. 1 c. Labrum. 1 d. Mandible. 

 1 e. Maxilla. 1 /. Labium. 1 g. Antenna. 1 h. The same, 



seen sideways. 1 i. Prothorax and fore legs, seen from the front. 



1 A-. The intermediate legs. 1 /. The hind pair of legs. 



Fig. 2. Microchcstes spharicus, magnified. 2 a. Labrum. 2 b b. Mandibles. 



2 c. Lower parts of the mouth. 2 d. Antenna. 2 e. Fore leg. 

 2/. Ditto, folded up. 2 g. Hind leg. 



Fig. 3. Macromalocera Ceramboides, natural she. 3 a. Under side of the front 

 of the body. 3 b. Front of head. 3 c. Maxilla. 3 d. Labrum and 

 its parts. 3 e. Extremity of tarsus and ungues. 



Fig. 4. Scotccas corallipes, natural size. 4 a. Under side of the pro- and meso- 

 thorax. 4 b. Maxilla. 4 c. Antenna. 



Fig. 5. Lophotus nodipennis, natural size. 5 a. The head, seen sideways. 



PLATE II. 



Fig. 1. Prionus pilosicollis, natural size. 1 a. Under side of the front of the head. 



Fig. 2. Decarthria Stephe7isii, magnified. 2 a. Head, seen from the front. 

 2 b. Ditto, sideways. 2 c. Labrum. 2 d. Mandible. 2 e. Maxilla. 

 2/. Labium and its parts. 2 g. The insect, of the natural size. 



Fig. 3. Stenoderus Roei, natural size. 3 a. Front of head. 3 b. Under side of 

 ditto. 



Fig. 4. Tragocerus Spencii, natural size. 4 a. Front of head, from above. 



4 b. Ditto, from beneath, showing the parts of the mouth. 4 c. Maxilla. 



Fig. 5. Pachylocerus corallinus, natural size. 5 a. Front of head. 5 b. Un- 

 der side of ditto. 5 c. Prosteruum. 



