9S DESCRIPTION OF INSECTS 



Dytiscus fimbriolalus. Melsh. Calal. 



Length one inch and one-fifth. 



Body dark green, beneath piceous-black, impunctured, very 



distinctly widest behind and narrowed before. 

 Head smooth, with a slightly impressed spot on each side of 

 the front ; nasus and iabrum yellowisii, the latter with an 

 impressed transverse puncture each side, the former 

 blackish at base above ; trophi and antennae rufous ; man- 

 dibles at tip and labium black-piceous. 

 Thorax with numerous, minute, impressed, irregular lines, 

 an anterior, abbreviated, indented, transverse line each 

 side of the obsolete dorsal one, lateral margin yellowish. 

 Elytra with very numerous, abbreviated, longitudinal, irre- 

 gular, impressed, unequal lines, which are obsolete near 

 the suture, tip, and on the outer margin, three series of 

 distant punctures slightly villous, lateral one indistinct, 

 costal margin yellowish, which becomes obsoletely semi- 

 deltoid near the tip. 

 Pectus and postpectus piceous-black ; feet piceous ; femora 

 and basal joints of the anterior pairs yellowish-rufous ; 

 venter piceous, three lateral rufous punctures on each side. 

 A black spot is often present on the middle of the yellow 

 thoracic margin. This species approaches exceedingly near 

 to D. limbatus of E. India ; but, according to the observations 

 of Dr. J. F. Melsheimer, it is smaller, the colour is less oli- 

 vaceous, more of a deep green, and the form a rather longer 

 oval. 



2. D. *verlicalis suboval, above blackish with greenish re- 

 flections ; thorax and elytra margined with yellowish, the 

 latter with an oblique subterminal line. 



Length one inch and three-tenths. 



Body impunctured, above black, with olivaceous green reflec- 

 tions, beneath piceous-black, sul)oval, very sligl)tly broadest 

 behind and hardly narrowing before. 



Head large ; vertex with an obscure rufous spot, a geminate, 

 impressed, punctured spot near the nasus, numerous super- 



