HYDROMETRID.E. 561 



Above dull browu-black ; beneath dull ashy gray. Anf e mice hlack ; 

 1st joint as long as all the others together. Fronofum ^Yithout 

 tubercles at the hinder angles ; the scutellar process short, 

 rounded. Elytra and icings entirely wanting in the vast 

 majority of examples. Connexivum deep, concolorous with the 

 abdomen ; the projecting points straight, acute, not so long as 

 the genital segments. 



Head long, the sides without a white line, the base often with a 

 small, transverse yellow line. Antennce black ; 1st joint as long as all 

 the others together ; 2nd, 4th and 5th subequal. Eyes black, 

 shining. Ocelli black. Eostrum black ; 4th joint with a long, fili- 

 form, brown point. 



Thorax. — Pronotum long; sides sharply defined, almost parallel, 

 very slightly curved inwards in the middle ; the 1st region only 

 iucrassated at the sides and raised into 2 broad lobes which join in 

 front, and are posteriorly separated by a deep impression ; the disk, 

 as far as the hinder angles, flat, punctured, anteriorly transversely 

 crenate, the centre with a fine raised line, hinder angles not raised ; 

 the under- curved margin black ; the scutellar process short, slightly 

 convex with a slight keel, the margin but narrowly flattened. 

 Stermim ; Prosi'er;^;;;^ depressed, yellowish ; Mcsosternum depressed 

 in the middle in the ,^ , convex in the ? , the sides rounded off", the 

 part of the sides next the pronotum visible from above, dull black 

 bordered by a glossy white line, the rest dull ashy gray, or blackish 

 anteriorly, in front with a very slight, short channel ; Iletasternum 

 convex. The sheath of the 2ud and 3rd pairs of coxce black above, 

 light yellowish-gray beneath. Leys black, gray-brown beneath ; 

 2nd pair of coxcb stouter and more projecting than the 3rd; thiylis ; 

 1st pair at the base narrowly yellow ; 2nd and 3rd pairs in length 

 subequal ; tilice ; 2nd pair longest ; 3rd pair shorter than the thighs ; 

 tarsi; 2nd pair, the 1st joint 3 times longer than the 2nd ; 3rd pair, 

 1st joint 1^ time longer than the 2nd. 



Abdomen above black, with a fine, interrupted, gray line down the 

 middle ; Connexivum deep, concolorous with the abdomen, with a fine 

 brownish line on the junction of the segments : beneath dull ashy 

 gray, without a keel, the middle with a fine dark line ; the posterior 

 margin of the 6th segment deeply, regularly concave in the $ , less 

 deeply in the $ . Genital segments above, slightly convex; in the (^, 

 the 1st, quadrangular, reaches much beyond the points of the con- 



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