52 Mr. A. Sidney OL'.iir's descriptions of 



Helota gemmata. 



Helota gemmata^ (xorham, Trans. Eiit. Soc. Loud. (1874j, 

 p. 448; Keitter, Deutsche Eat. Zeit^chr. (1S7(I) xx, pi. i, fig. 

 1 ; Waterhouse, Aid ii, pi. cxxxiii, fig. '2. 



Japan. 



Laiva, PI. Ill, fiii. b. 



Elongate, much depressed, pitchy l)lack, shining, slightly attenu- 

 ated l)ehind. Head transverse ; sides rounded, very sparingly 

 covered with fine bristly hairs ; witli a moderately strong semi- 

 circular impression on the disc, the concave side of which is 

 towards the base. Epistoma rather large, sides oblique, with two 

 rather strong longitudinal impressions extending from the base to 

 just behind the anterior margin. AntenciE four-jointed ; the basil 

 large and transvei'se, second slightly shorter and much smaller, third 

 cylindrical as long as the first two together, with a very small 

 sharply pointed spine near the outer angle at the apex, fourth much 

 smaller and about ha'f as long as the third. Ocelli six on each 

 side of the head, in two transverse series, the first near the base 

 of the antenna ; however, only five are visible when the head is 

 viewed laterally as in the plate (fig. 8 d). Labrum very short, 

 rounded in front, anterior margin clothed with a few bristly hairs. 

 iMandiljles stout, strongly curved; each provided on the inner 

 side with four small obtuse teeth, acutely bifid at the apex. 

 Maxilla; rather lai-ge, obliquely truncate at the apex, which is 

 covered with sliort and A'ery strong bristle-like curved hairs; 

 maxillary palpi four jointed, basal moder-ately large and trans- 

 verse, second rather narrower, tliird decidedly longer and thick- 

 ening towards the apex, fourth longer than the third, narrowed 

 towards the extremity, and terminated by a small, compact, ovate 

 clul). Lnbiimi moderately large, rounded in front, deeply im- 

 pressed on each side; labial palpi three jointed, basal nearly as 

 broad as long, second rather narrower and longer, apical slightly 

 narrowed towards the extremity. First thoracic segment much 

 broader than long, slightly raised in front, then sloping down- 

 wards to the base, with a moderately long llexuous impression 

 on each side of the disc, and a strongly marked medial line ; an- 

 terior margin somewhat thickened, sides finely punctured and 

 clothed Avith rather long bristle-like hairs. Abdominal and second 

 and third thoracic segments veiy short, finely wrinkled traiis- 

 A-ersely, delicately and sparingly punctured, covered, especially 

 iiear the sides, with very small tubercles and bristly hairs ; each 

 t>c;:mont \y\i\\ a strongly impressed central longitudinal line, and 



