202 



Plate XXXII. The hypopharynx and labium agree with those of 

 Pachyrrhina ferruginea. 



I have before me the specimen from which Mr. Hart drew up 

 his description of his Species (b) in the paper on the "Entomology 

 of the Illinois River and Adjacent Waters"*, and a number of speci- 

 mens sent in by a farmer October 7, 191 5, from an alfalfa field at 

 Towanda, 111. 



Tipula sp. 6 



This is the Species (a) described by C. A. Hart in his paper on 

 Illinois River species. The apical segment differs from that of any 

 allied species known to me, and this character alone should enable 

 one to identify it. As Hart did not figure this species I have pre- 

 pared drawings of the apical segment which are presented herewith 

 (PI. XXXI, Figs. 6, 7). 



In addition to the specimen previously recorded from Havana, 

 111., I have before me one taken in a sandy swamp at Grand Crossing, 

 111., Nov. 7, 1891 (C. A. Hart). 



TlPULA Sp. 7 



Larva. — Length, 25-30 mm. Brown, apical segment yellowish 

 white on the posterior surface, the 4 upper radiating processes con- 

 spicuously blackened posteriorly, or on what is their inner or under 

 surface when incurved, the lower pair with a black spot near apex 

 which, because of the processes being normally curved upward, as in 

 Figure 1, Plate XXXI, is not usually visible. 



Head of normal size and shape, the dorsal and ventral surfaces 

 as shown in Figures 2 and 3, Plate XXXI ; hypopharynx as in 

 Figures 1 1 and 14 of the same plate ; mandibles as in Figure 27, Plate 

 XXXII. Body with weak pilosity, the arrangement of bristles and 

 the general structure as in Pachyrrhina ferruginea; apical segment 

 differing as stated in key. 



Pupa. — Length, 28-30 mm. Brown, slightly shining. 



Base of antennae with a sharp thorn-like process on anterior side ; 

 a small rounded tubercle above and behind base of antennae. Thoracic 

 respiratory organ about 10 times as long as its greatest width; post- 

 spiracular and medio-dorsal thoracic protuberances large, the latter 

 sharp and not bifiid, posterior protuberance small ; legs ending just 

 before apex of third abdominal segment, the apices of fore tarsi fall- 



•Bull. 111. State Lab. Nat. Hist., Vol. 4, Art. VI, p. 217. 



