on each side at the constriction ; disk with a longitudinal mesial 

 impression, Scutellum narrowed towards the apex. Elytra long, 

 much enlarged posteriorly ; each elytron with four costaB, the inter- 

 stices finely and thickly punctured, and with indications of reticu- 

 lation here and there. 



CALOCHROMUS. 



Gu&in, Ann. Soc. Ent. Fr., 1833, p. 158. 



Section I. Maxillary palpi very sJiort, thicJc, compact, the 

 apical joint nearly globular. 



Calochromus basalis. 



(Plate I. fig. 2.) 



Waterh., Cistula Ent., ii. 1877, p. 196. 



Niger, nitidus ; elytris dimidio basali ferrugineo, quadricostatis, 

 apicem versus paulo angustatis. $ . Long. 5 lin. 



Hah. Swan Eiver. 



Closely allied to C. scutdlaris, Er., but relatively broader ; thorax 

 broader, with a deep mesial impression, broader in the middle ; there 

 is a deep round fovea at the anterior angle, and a deep impression 

 within the posterior angle, the part between the anterior fovea and 

 the posterior impression raised, so that the impressions are not con- 

 fluent as in scutellaris. The antennse are broader than in smtellaris, 

 in which the fourth joint is twice as long as broad, whereas in 

 basalis it is not more than one third longer than broad. 



Section II. Maxillary palpi less compactly jointed, the apical joint 

 not globular. 



Calochromus melanurus. 



(Plate I. fig. 5.) 



Waterh., Cistula Ent., ii. 1877, p. 196. 



Cyaneo-niger, nitidulus, brevissime pubescens ; thorace medio 

 canaliculato, ad angulos anticos impresso, intra angulos posticos 

 fovea rotundata impresso, basi marginato ; elytris ferrugineo-flavis, 

 dense pubescentibus, prope suturam striatis, interstitiis convexi- 

 usculis, apice nigro. Long. 4|-7j lin. 



Hab. Penang, Java, Sumatra. 



Forehead between the eyes very prominent. Antennae as long 

 as the elytra, the two basal joints shining, the rest finely punctulate. 

 Thorax very delicately and closely punctured, scarcely pubescent ; 

 disk with a fine mesial line, more deeply impressed behind, there is 

 also a deep impression at each anterior angle ; the posterior angles 

 are rather inflated, and within them there is a deep impression. The 

 elytra are rusty yellow, dull, and pubescent, bluish black at the apex. 



