182 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



lary stipes are elongate and armed with nine stout spines on the lateral 

 margins; the maxillary palpi are very stout and two-thirds as long as the 

 stipes, the first joint is one and one-half times as long as broad, slightly 

 clavate cylindrical, the second joint is one-quarter longer than broad, 

 the third as long as broad and the fourth twice as long as broad and only 

 half as wide as the third; the galea are two jointed, the first joint elongate 

 and thickly beset with brushes of complex hairs, the second joint is clavate 

 and bears four stout spines at its distal end; a second brush of hairs arises 

 below the attachment of the galea and a third brush is situated on the under 

 surface of the clypeus. 



The first thoracic segment is nearly cylindrical and almost as long as 

 the head exclusive of the mandibles, the second and third are subequal 

 and about three-quarters as long as the first; the legs (pi. 21, fig. d) are 

 very long and quite stout, the coxae are as long as the femora and tibia? 

 united, and serve to receive these two joints when in repose; inner edge of 

 coxae bears a few long hairs; femora clavate and two-thirds as long as coxa?, 

 tibia triangular, armed with three blunt stout spines near anterior margin, 

 tarsus beset with one large scoop-shaped spine near the distal end, sur- 

 rounded by four blunt spines and bearing three additional blunt spines 

 along its inner side. 



Abdomen with ten visible segments, segments two to seven are distinctly 

 divided transversely into three distinct areas each, the anterior area of 

 one segment being truncate conical and capable of being invaginated into 

 the posterior area of the preceding segment when contracted, the middle 

 area of each segment (pi. 21, fig. b) is globose, bears the ambulatory papil- 

 lae and the spiracles. Each segment bears two pair of ambulatory papillae, 

 a lateral pair anterior to the spiracles and a ventral pair near the anterior 

 margin; each papillus is bilobed, and retractile; the spiracles are very 

 obscure but of the typical biforian type; the tergite of each abdominal seg- 

 ment is marked by a median impressed line and a pair of shallow lateral 

 grooves, the ventron of the middle area of each segment is divided into 

 two parts by a median sulcus. The ninth abdominal segment (pi. 21, 

 figs, c, e) is thimble-shaped and about as long as the middle section of 

 the other abdominal segments; it bears at its extremity a rounded point 

 which is armed with radially arranged stout spines. The tenth segment 

 is concealed from above by the ninth, near the middle of the ventral side 

 of which it arises, it is depressed cylindrical and directed obliquely ven- 

 trad; the anus is terminal and the anal lobes are arranged as follows: 



The two lateral lobes are quadri-digitate and longer than the tenth 

 segment, the ventral lobe is short and bidigitate, all these lobes are re- 

 tractile. 



The larva of Horistonotus uhlerii differs from that of Cardio- 

 rus asselus and probably from all other species of this last 

 genus, in the absence of ocelli. Schiodte has figured a large prom- 

 inent ocellus at the base of each antenna. These ocelli are very 

 seen in Schiodte's specimens, which, through the kindness 



