142 THE CANADIAN ENTOMOLOGIST. 



dates, until in Arizona, California, and the Southwestern United States 

 and thence South, they can be taken at all times of the year. One day is 

 just as good as another for collecting. Sunshine and storm in no way 

 affect the bugs, except those that walk on land (the Gelastocoridse and 

 Acanthiidge), which seek shelter. When there has been but little rain and 

 the ponds have evaporated to reduced areas, collecting is much better, as 

 then the bugs are, so to say, more concentrated. After severe storms 

 they are usually much scattered and less easily obtainable, because of the 

 greater volume and area of their haunts. Yet even in these conditions, 

 favourite nooks are found in which they fairly swarm. 



In conclusion, I would say that this is merely the general outline of 

 the methods that I have found useful, and I trust it will help others, as 

 some such directions as these would have helped me when I commenced 

 to collect aquatics. Each species requires slightly different methods ; 

 their- haunts vary in character ever so slightly ; the manipulation of the net 

 has to be suited to the peculiarities of each. In the limited space at my 

 disposal, it is impossible to give a cross between a check-list and a dis- 

 sertation on habits, even were it desirable, which it is not. Therefore, 

 each collector must observe closely to become expert. This is only the 

 guide-post ; the collector does the walking. If any of my readers would 

 like further assistance, a letter to me will bring in return whatever may be 

 in my power to give. (Address : 25 Broad Street, New York). 



A NEW PEZOMACHUS FROM ITALY. 



BY WILLIAM H. ASHMEAD, M. A., D. SC. 



In a recent sending of parasitic Hyraenoptera, bred by Dr. Eilippo 

 Silvestri, at tlie Laboratorio di Entomologia Agraria, Portici, Italy, sent 

 me for names, I find a new Pezomachus, represented by both sexes. 



Pezomachus Si/vestrii, new species. — '^ . Length, 2.6 mm.- 

 ovipositor a little longer tiian the petiole of the abdomen. Black and 

 shining, impunctate except a feeble shagieening on the pleura ; the 

 metathorax is rounded off posteriorly, and without a trace of a transverse 

 carina; antenuce 2!-jointed, the fourth joint a little shorter than tiie third, 

 the tiagellum brown-black, the extreme apex of the pedicel, or second 

 joint of antennaj, yellowish; legs black, with the sutures of the trochanters, 

 the apical third of front femora, front tibiae narrowly at base and more or 

 less beneath, and base of first joint of tarsi, testaceous, the rest of tarsi 

 fuscous or lirownish, but a little yellowish at sutures of the joints ; hind 

 tibial spurs white. 



April, lyo.s. 



