Eighth Report of the State Entomologist, 159 



It is a rather common insect in localities favorable for it in 

 the State of New York, it having been frequently taken by me at 

 Schenectady, on the Mohawk river, in the months of June and July, 

 ami extending into August, where, ^\ / 



also. CJiauliodes serricornis Say, was >\^yy ^-^ssaseswa?* 



not rare in the month of June, while £, 



C. rastricomis has not occurred with 



me, in New York. Examples of 0. j& 



peetinicomis in the Harris collection, *&'-■ 'J jb 3 ^s^^a^ss* 



and now in the collection of the / fc y 



Boston Society of Natural History, *r 



!• , y^ , TT // v \ Fig 16.— The saw-horned flsn-fly, Chauli- 



aCCOraing to Ul\ xiagen [COC. Cll.), des serricornis, in natural size (original). 



bear the following dates of capture: July and August, 1821; May 25, 



1827; June 10, 1827; September 20, 1829; N. Carolina; June, New 



York, Calverlejr. 



Not an Injurious Insect. 



While of a carnivorous habit, the food of the larva, for the most 

 part taken from the bottom of the waters which it inhabits, would 

 naturally consist of both injurious and beneficial forms, perhaps about 

 equally divided. It has been suggested that with a seeming preference 

 for a pond life, it might become injurious should it ever abound in fish 

 ponds, from feeding on the eggs of fishes and the young fry; but know- 

 ing the fondness of the bass and several other fishes for the horned 

 corydalis — the " dobson," — there need be no fear that this weaker and 

 less formidable looking creature would ever be permitted to become 

 injuriously abundant in any water where desirable fish-food is not 

 in excess. 



Corydalis cornuta (Linn.). 



The Homed Corydalis. 



(Ord. Neuroptera: Fam. Sialid^e.) 



LinnjEUS: Syst. Nat., i, pars ii, xii edit., 1767, p. 916.3 (Raphidia). 



Fabricius: Sp. Ins., i, 1781, p. 392.1; Mant. Ins., i, 1787, p. 246.1; Ent. Syst., ii, 

 1793, p. 81.1 (Hemerobius). 



Latreille: Gen. Crust. Ins., iii, ?1809, p. 199.1 (Corydalis). 



Haldeman: in Mem. Acad. Arts-Sci., Jan., 1850, pp. 162-168, pi. 1-3 (trans- 

 formations). 



Hagen: Synop. Neurop. N. A., 1861, p. 192 (bibliography and description); in 

 Proc. Ent. Soc. Phila., ii, 1863, p. 181 (respiration and habits). 



Walsh: in Proc. Ent. Soc. Phila., ii, 1863, p, 265 (traveling habits of larva and 

 transformations); in Pract. Entomol., i, 1866, p. 113 (habits); in id., 

 ii, 1867, p. 107 (horns of the male). 



