ENTOMOLOGY. 67 



(122° F.), but when deprived of their covering were killed by 15° R. 

 The larvae appeared at the beginning of May and molted five times 

 before pupation. Pupation occurred at Moscow July 2. 



In some places in Vovoneseh 20 per cent of the young eggs were 

 killed. J n many places the insects were severely parasitized. In Vla- 

 dimir 40 per cent of the pupae were so affected; in Moscow in 1895 20 

 per cent and in 1800 57 to 00 per cent. In Vovoneseh in 1894 70 to 80 

 per cent were parasitized. In Moscow the parasites were mostly flies. 

 At one place near Moscow li to 2 pud (49 to 72 lbs.) of eggs were col- 

 lected from one hectare. In Vladimir 70 pud (2,741 lbs.) were collected 

 from 0,000 hectares (14,830 acres). 



A remedy for trial in the destruction of the worm of the vine 

 (Cochylis), J. Dufoue (Ghron. Ayr. Cant. Vaud, 10 (1897), No. 8, pp. 

 210-220). — After mentioning the commonly used pyrethrum and the 

 fluctuations in the supply of the same, the author considers the sub- 

 stitution of terebinthiu for pyrethrum in mixtures. It is sufficient to 

 dissolve 3 kilos of black soap in several liters of warm water, afterwards 

 adding thereto cold water to make 100 liters, finally adding 2 liters of 

 the essence of terebinthiu. These. 102 liters of solution will cost about 

 3 1 francs — less by half than the cost of the pyrethrum. It is important 

 that not more than 2 per cent of the terebinthiu should be employed, 

 lest it damage the grapes. 



The following experiments are noted: (1) Soap, 2 percent; terebin- 

 thiu, 1 per cent. Worms treated by plunging bunches of grapes rapidly 

 into the solutiou. Of 21 worms, 3 were killed, 3 injured. (2) Same 

 solution with the addition of colophane. Of 8 worms, 3 were killed, 2 

 injured. (3) Black soap 3 per cent, terebinthiu 2 per cent. Of 04 

 worms, 44 were killed and 10 injured. (4) Black soap 3 per cent, sul- 

 phurous terebinthin 2 per cent. Of 10 worms, 11 were killed. (5) Black 

 soap 3 per cent, terebinthin 1 per cent, oil of colza 1 per cent. Of 33 

 worms, 20 were killed and 5 injured. Analogous results were obtained 

 by replacing the terebinthin with benzin. (0) Soda, 3 per cent ; terebin- 

 thin, 2 per cent, with and without the addition of bine vitriol 2 percent. 

 Many worms killed but grapes greatly damaged. (7) Black soap, 3 per 

 cent ; terebinthin, 3 per cent. Of 24 worms, 1 8 were killed and 5 injured. 

 This last solution, it is noted, burned the grape bunches, the parts most 

 sensitive to its action being not the flower but the small pedicel that 

 supports it. A similar effect follows the use of the 2 per cent solution 

 in a very slight degree, but this, it is thought, is greatly counterbalanced 

 by the worms killed. 



Contributions from the New Mexico Biological Station, No. 2, on the collec- 

 tion of Diptera from the lowlands of Rio Nautla, in the State of Vera Cruz, II, 

 C. H. T. Townsexd {Ann. Mag. Xat. Hist., 6. ser.. 20 (1897), 115, pp. 19-83).— A new 

 Psychodid (Psychoda punctate! la), a new Tabanid, several Syrphids, and two new 

 Phasiids are described. The distinctive features of Tdbanus mexicanus and varieties 

 are brought out talmlarly, as are also the characters of several forms of the Syrphid 

 genus Nausigaster. The author is confident that several species of this genus occur 

 in North America, and three of them are described by Williston under the name of 



