38 fJ»iy' 



sternum very slightly convex, front margin nearly straight, the anterior angles slightly 

 tumid, and having within them a rather obsolete furrow. Hind-margin very slightly 

 concave, with, on each side, a shallow longitudinal furrow lying on the inside of the 

 middle acetabula. Metanotum separated from the mesonotum by a distinct furrow ; 

 very much broader than long, and consisting of three portions. The central poi'tion 

 is bounded on each side by an elevated ridge, continuous with the connexivum of the 

 abdomen, and lying to the inside of the hind acetabula ; front margin concave ; 

 hind margin emarginate in the middle, slightly convex on each side ; disc trans- 

 versely convex, with, posteriorly on each side, a narrow, rather deep fovea, external 

 to which is a small tubercle. The lateral portions of the metathorax extend back- 

 wards and form the hinder acetabula, hence, perhaps, they should be considered as 

 making part of the metasternum, no part of which is visible below. 



The abdomen is very short in comparison with the thorax, and docs not extend 

 backwards much beyond the base of the hind legs. Above, the abdomen (excluding 

 the genital segments) consists of five visible segments, but another probably exists, 

 and is covered by the metanotum, the small fovea on each side of the disc of which 

 indicates its situation. The five visible segments are ring-like, and very much 

 broader than long. On each side is the broad connexivum, which is perpendicular 

 to the segments, and is continuous with the ridge that lies between the central por- 

 tion of the metanotum and the hinder acetabula. Below, the abdomen has six 

 visible segments, of which the 1st is nearly as long as all the others taken together ; 

 the 2nd is rather indistinct, but seems to be like the remaining four, ring-like, very 

 much broader than long. The hind margins of all are concave, and the sides of the 

 6th are prolonged backward a little. At the middle of the hind margin of the 1st 

 is a small tubercle, the exact nature of which in this specimen I have not been able 

 to make out. Similar tubercles occur in species of the genus IlaJolates, and appear 

 to be perforated at the apex, and are probably the opening of some gland. 



The genital segments are a little distorted in the specimen described, but appear 

 to be three in number, visible both above and below. The first is, above, similar to 

 the preceding abdominal segment, but rather broader. It has an erect connexivum. 

 Below, it is as long as the four preceding ventral segments ; hind margin concave. 

 The second segment forms a cylinder, open at the end. It is about as long as one- 

 third of the abdomen, but narrower. Viewed from above it is oval, convex, rather 

 narrowed at the base, and triangular at the apex ; viewed from below it is rather flat, 

 with a strong tooth about as long as the segment itself below, projecting backwards 

 from the hind margin. The third above and the third below are apparently not 

 united. Above, the third is a narrow, triangular plate, with blunt apex and with 

 the sides sloping at the base downwards under the second segment, and giving rise 

 on each side below to a long spine-like tooth. (From the distortion of the parts, 

 only one spine is actually visible, but the other seems to exist.) Below, the third is 

 a very convex, long, narrow, boat-shaped valve. 



Front-legs : acetabulum large, cylindrical, with the circular opening looking back- 

 wards and downwards ; coxa short, ring-like ; trochanter large, cylindrical, slightly 

 curved, the base abruptly bent into a narrow neck, the lower posterior part of the apex 

 pointed to articulate with the femur. Femur stout : viewed from the outer side it forma 

 a long narrow triangle, slightly thickened about the middle and again at the apex ; 

 the base with an excavation on the posterior side in which the trochanter articulates, 



