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 havinj? been frequently taken by me at 

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

 and extending into August, where, 

 also, Chauliodes serricortiis Say, was 

 not rare in the month of June, while 

 C. rastricornis has not occurred with 

 me, in New York. Examples of C. 

 pectinicornis in the Harris collection, 

 and now in the collection of the 

 Boston Society of Natural History, 



,-!• , -r\ UTooron (Jnn ^'f \ ^^'^ 16.— The saw-horned fish-fly, Chauli- 



aCCOrQing to Ul. Xiagen \^COC. C<.f.J, odes 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, Calverley. 



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 

 ijaturally 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 eggsof 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 Horned Corydalis. 



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



LiNN.EUS: Syst. Nat., i, pars ii, xil edit., 1767, p. 916.3 {RaphicUa). 



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. 193 (bibliography and description); in 

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



Walsh: in Proc. Ent. Soc. Phila., ii, 1863, p, 365 (traveling habits of larva and 

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

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



