The Crane-Flies of New York — Part II 827 



bark of trees. The material studied was collected by J, R. Malloch in 

 Potomac Park, Washington, D, C, on May 11, 1913, and was reared 

 by R. C. Shannon (No. 35-1913), whose notes on the subject are as follows: 



A small colony (about seven) of tipulids were found in a hollow of a tree behind the bark. 

 The larvae were covered with slinie, whicli gathered debris as they moved about and so 

 formed a case. TJie next morning one had pupated. Two larvae were boiled and pre- 

 served in alcohol, while two otJiers were preserved in formal. As they move about they 

 leave a path of slime behind them. On May 14, the one that had pupated on the 12th 

 emerged. On May 18 another imago issued. 



There is an obvious error in the duration of the pupal stage as given 



■ — only two days. It is possil^le that a pupa was included in the material 



and was overlooked in its case of debris. The date of emergence of the 



second adult would show a pupal duration of six days, which is probably 



nearly correct. 



Larva. — Length, 1.3.2-14 mm. 

 Diameter, 1 mm. 



Coloration white. 



Form terete, rather stout. Stornites 1 to 7 and tergites 2 to 7 with narrow transverse wolts 

 on basal rings; welts yellow, provided with long, transverse rows of microscopic roughened 

 points, those along margins of welts coarser, those in centers very tiny; these rows inter- 

 rupted along pleura. Caudal end blunt, with lobes of spiracular disk indistinct. Spiracles 

 large, capable of close approximation. 



Head capsule massive, of the Limnobiatype. Labrum (PlateXXX, 121) broadly transverse, 

 anterior margin almost straight across, near margin two oval areas which are provided with 

 small sensory papillae. Epipharyngeal region with abundant hairs. Mentum (Plate XXX, 

 122) chitinized, the anterior margin almost transverse, with a large median tooth and about 

 three lateral teeth on either side, the outermost of these an evident fusion of about three lesser 

 teeth. Hypopharynx (PlateXXX, 123 and 124) asusualin this subtribe, a collar-like structure 

 composed of two parallel combs united at the ends; the larger plate broadly elongate, surface 

 with abundant scalelike plates, anterior margin with twelve teeth, the lateral ones narrow, 

 the teeth gradually enlarging toward the middle, the middle pair a little shorter; second plate 

 of hypopharynx broadly transverse, narrow, likewise with about twelve teeth, the two outer 

 most on each side long, subacute, the middle tooth shorter and more flattened; between the 

 two middle teeth a small triangular or conical point. Antenna (Plate XXX, 125) short cylin- 

 drical, the apical papilla a very flattened disk or button which is much broader than long. 

 Mandible (Plate XXX, 126) very broad, flattened, with the apical tooth rather long and slen- 

 der; two smaller teeth dorsad and three others ventrad, the dorsal teeth blunt, the ventral 

 teeth truncated, the most basal tooth very broad. Maxilla (Plate XXX, 127) of the simple 

 generalized structure of this tribe; cardines large, with two setiferous punctures; stipites 

 weakly chitinized basally; outer lobe of ma.xilla with the large flattened palpus at its tips; 

 palpus surrounded by numerous long setae and having several hyaline sense pegs at its 

 apex; inner lobe of maxilla smaller, with numerous long hairs, especially a slitlike brush 

 near margin. 



