390 NOTES ON GEOPHILID^ COOK AND COLLINS. 



Antennse with the last joint equalling in length the two preceding taken 

 together. 



Frontal lamina coalesced ; cephalic laminaof equallength and breadth^ 

 anterior margin forming a semicircle, sides nearly straight, converging 

 posteriorly, posterior margin slightly incurved ; prebasal lamina ex- 

 posed ; basal lamina three times as broad as long. 



Labrum obtusely notched at the points of support; median teeth 

 short and blunt; those of the margins outside the sinus long and slen- 

 der, closely appressed to the edge of the labrum. 



Mandibles with the two dentate lamellae next the pectinate with 

 three teeth each, the other with two; the last is coalesced with the 

 edge of the maudibulary stipe, while the others have no chitinized 

 connection. 



Labial sternum entire, coalesced with the maxillary sternum for the 

 middle third of its breadth; interior processes conic, coalesced on the 

 basal portion of the exterior side with the basal joint of the palpus. 

 This joint bears on the apical exterior angle a small process, while 

 attached to its exterior side, and perhaps also to the labial sternum, is 

 another process half as broad as the palpus, and nearly as long, which 

 lies folded on the dorsal side of the palpus. To the lateral edge of the 

 labial sternum, is attached a still larger long-oval process, folded back 

 on the labial sternum, and reaching to the apical edge of the basal joint 

 of the palpus. Both these large processes are of thin, transparent 

 structure. 



Prehensorial feet attaining the frontal margin of the head; sternum 

 nearly twice as broad as long (5:3), longer than the coxa (7 : 5), slightly 

 sinuate anteriorly ; coxa unarmed ; claw unarmed at base. 



Scuta of moderate length, slightly more than twice as long as the 

 prescuta, both becoming longer posteriorly. 



Spiracles large, elliptical, longitudinal diameter of the anterior 0. 095 

 millimetres, which is about twice the transverse; gradually smaller 

 and rounder posteriorly, diameter of last spiracle 0.055. 



Sterna bisulcate, anteriorly with a slight median foveola, which soon 

 becomes obsolete ; ventral pores in a transversely oval median area 

 which lies nearer to the posterior margin. The anterior areas are about 

 one-third as broad as the space between the sulcations; the areas 

 increase in size until about the fifteenth segment, and then gradually 

 decrease, until on the penultimate segment there are but four pores in 

 the specimen examined. 



Pleurae of last segment moderately enlarged, pilose, with two large 

 pores concealed under the ultimate sternum, which is very hairy and 

 nearly twice as broad as long (7:4). 



Legs with very sparse short hairs, the first pair much shorter than 

 the second, from which the length gradually increases to beyond the 

 middle, where it again decreases. Anal legs longest, very densely 

 hirsute with short hairs, enlarged in the male. 



