202 bulletin: museltm of comparative zoology. 



Adenoschendyla parahybae, sp. nov. 



Mostly pale yellowish white, becoming more densely pigmented 

 anteriorly, lemon-j-ellow. Head dilute ferruginous or orange, darker 

 in a band immediately caudad of frontal region. Prosternum a little 

 paler than the head, with the prehensors much lighter, yellow. An- 

 tennae yellow. 



Rather slender with the bod}^ considerably attenuated cephalad and 

 also very strongly at caudal end. Hairs sparse, of moderate length, 

 more numerous caudad. 



Cephalic plate much longer than wide (4:3). Widest caudad, con- 

 spicuously narrowed or constricted in frontal region at anterior end; 

 anterior border subtriangular; caudal margin slightly concave; sides 

 nearly straight from a little in front of caudal corners cephalad to 

 frontal region. (Plate 5, fig. 1). 



Antennae strictly filiform as usual. Long, being a little more than 

 three times the length of the cephalic plate. Articles mostly long, 

 excepting those immediately preceding the ultimate. Ultimate article 

 longer than the two preceding taken together. Hairs of articles of 

 distal region very short, dense; those of proximal articles conspicu- 

 ously longer and more sparse. 



Prebasal plate a little exposed, the cephalic plate not overlapping the 

 basal. 



Basal plate with sides straight, strongly converging cephalad; three 

 times wider than long. 



Claws of the prehensors when closed about even with the front 

 margin of the cephalic plate; claws large and well overlapping; 

 robust; articles all unarmed within as usual. 



Prosternum wider than long in about ratio 7:5; one and a half times 

 longer than the outer height of the femur of prehensors; sides con- 

 verging from the anterior corners to the caudal and straight excepting 

 towards ends; anterior margin sloping a little caudad of directly 

 mesad from the ectal ends to the mesal incision, which is shallow, 

 laterally strongly chitinized but with no signs of teeth. 



Dorsal plates bisulcate; the sulci on the anterior plates distinct 

 caudad as far as a fine transverse furrow a little in front of the caudal 

 margin, this transverse furrow being in the form of a pair of concave 

 impressions meeting at a cephalically directed angle; a fine median 

 longitudinal sulcus also present as may also be one or two less distinct 

 ones on each lateral part. Anterior prescuta short, the others in- 

 creasing in length to the caudal region where they are moderately long, 

 the last ones being again short. 



