24G FORTT-FOURTR REPORT ON THE StATE MvSEUM 



bristlets, but always in so insignificant number that they could almost 

 be left out of consideration in comparison with P. affinii^. 



Ph. chrysanthemi is certainly not identical with Ph lateralis Fall., 

 Zett., Schin., which, on account of the venation, Haliday has 

 placed in a distinct genus — Najjomyza. It appears also, extraordi- 

 narily like that in color and size, but lacks the posterior transverse 

 vein. N. lateralis lives in the base of the flowers of a few GomjMsitce, 

 while Ph affinis and Ph. chrysanthemi are true leaf-miners. So far as 

 known to me, Ph. affinis confines itself to the leaves of a few Ranuncu- 

 lacece, while Ph. chrysanthemi mines in the leaves of Gompositce. 



I have not identified Ph. chrysanthemi with Ph. affinis, because I 

 believe that from the absence of the bristlets and from the features 

 of the ovipositor, the claim of the former to be a distinct species 

 could be established. 



The illustration in your Report for 1887, copied from Curtis' British 

 Entomology, p. 393, is the true Napomyza lateralis Fallen. 



It would be quite interesting to learn to what Phytomyza the one 

 belongs which burrows in the leaves of Aquilegia, as figured on page 

 79 of your Report; perhaps it is the Ph. affinis Fall. 



Remedy for the Insect. 



In the former notice of this insect {ith Rept. Ins., N. Y., p. 76), it 

 was recognized as a pest not to be controlled by ordinary remedies or 

 preventives, and it was, therefore, recommended that, until some 

 other more successful method could be found, the plants should be 

 examined at brief intervals after the first recognition of the attack, 

 and every infested leaf picked off and burned. 



This method seems to have been quite effective in the greenhouses 

 of Mr. Dana, at Dosoris, L. I., where the insect was first noticed, as 

 appears from a note of Mr. W. Falconer, written January 31, 1888, 

 stating: "Although the cool months of the year — October to May — 

 are the favorite times for the appearance of the larvae, our green- 

 houses at the present time are almost free from them; and this, not 

 from any remedy employed, but from watching diligently for the first 

 indication of their operations, and plucking and destroying every 

 infested leaf." 



Dynastes Tityus (Linn.). 



The Spotted Horn-bug, or the Rhinoceros Beetle. 



(Ord. Coleopteba: Fam. ScAEABJEiDiE.) 



Pal. de Beauvois : Ins. recueil. en. Afr. et Amer., 1805, p. 138 (as Scarabceus 



Tityus). 

 Latreille: Eacyc. Method. Hist. Nat. Eatomol., x, 1825, p. 347 (mention), 



pi. 137, f . 7 (as Scarabceus Tityus). 

 Walsh-Eiley : in Amer. Entomol., i, 1869, p. 168 (identified from Miss.). 



