234 [MATch, 



DESCRIPTION OF A NEW SPECIES OF CUCUJUS FROM ASSAM, AND 

 OF CERATORREINA QEMINA FROM WEST AFRICA. 



BT GEOBGE LEWIS. 

 CUCTJJUS IMPERIALIS. 



Elongatus, depressus, niger, elytris atro-cyaneis. C. hicolori affinis, 



sed multo latior ; anteniiis pedibusque robustioribus. 



Long. 9^, lat. 1\ I'm. 

 Hah. : Sadia, Assam. 



In general structure this species resembles the Indian C. bicolor, 

 Smith, but it is broader, with thicker autennse and legs : the sculj)ture 

 of the thorax and the punctures of the elytra are both on a larger 

 scale. In colour it agrees with G. Mniszechi, Fairm., from Japan, but 

 the last is a more slender insect. 



Ceratorrhina aEMiNA, Lewis {vide Ent. M. Mag., xv, 198). 

 Parum convexa, aureo-viridis, elytris Jcetissime inaiiratis, macula 

 humerali apicalique nigris, tarsis jjosterioribus pallide viridis. 



Long. 13-16 lin. ; lat. elytrorum, 5^-6^ Tin. 



Mas : vertice medio jprofunde emarginato, utrinque angulariter 

 prominente, clypeo ad apicem in medio pt'^'ocessu brevi, antcnnis valde 

 dilatatis ; pedibus gracilibus, tibiis omnibus extus edentatis, intermediis 

 intus sinuatis ; elytris siiblcevigatis. 



Fern. : capite mufico, clypeo fortiter denseque punctata, anterius 

 levifer emarginato : tibiis anterioribus extus tridentatis, intermediis 

 posterioribusque uni-spinosis : elytris punctis seriatls onagnis parum 

 profundis, interstitiis parce punctatis. 



Hah. : Isubu, West Africa. 



This species is allied to C. auratus, Westwood, from which it 

 differs in its narrower and rather more depressed form, its com- 

 paratively unicolorous upper surface being more golden in tinge, 

 the finer sculpture of the wing-cases, and the paler colour of the 

 tarsi. It will be observed from the diagnosis that there is consider- 

 able sexual discrepancy in the sculpture of the elytra, and this is also 

 observable in G. auratus. In order, therefore, to appreciate the 

 sculptural distinctions of the two species, individuals of the same 

 sex should be compared. , 



3, Green Street, W. : Fehruary \Ztk, 1879. 



