16 



• 

 which it rested, and the adult fly issued from this cocoon eight days 

 later. On the 30th of May another parasitic larva issued from a second 

 of these ladybirds, and spun its cocoon as the previous one had done, 

 and the winged parasite issued seven days later. I submitted both 

 specimens of this parasite to Dr. Riley for identification, and he writes 

 me that they agree in every particular with specimens of JEnphorus 

 sculptus Cr. in the collection of the National Museum. It is interesting 

 to note that on page 57, volume in, of Insect Life, Dr. Riley records 

 having bred this same species from adults of the native ladybird, 

 Megilla maculata, collected at Washington, D. 0., and also at LaFayette, 

 Ind.j while here in California I have bred what he pronounces to be 

 this same species from two of our common ladybirds, Hippodamia con- 

 vergens and Coccinella sanguinea, both of which are also found in the 

 eastern part of this couutry. Thus this parasite is known to occur on 

 both sides of this continent as well as in Australia. With the above- 

 mentioned package was received a box of Aspidiotus aurantii infested 

 by a fungus ; these I placed in an orange tree thickly infested with this 

 kind of scale-insect. 



As stated above, no insects were received by me from Mr. Koebele 

 later than the 14th of May, 1892. 



The following are my notes and descriptions of the early stages of 

 some of the insects received from Australia. These are not complete 

 in regard to all of the species, since a sufficient number of specimens 

 of several of the species was not received to permit of my making 

 descriptions of all the stages, and I was unwilling to hazard the life of 

 any of the larvae belonging to species not thoroughly established here 

 by submitting them to repeated and critical examinations such as it 

 would be necessary to make in order to describe the various stages 

 through which these insects pass: 



Orcus australasije. — Egg. — Elongate-ellipsoidal, two and half a times as long as 

 broad, polished, but slightly scabrous, one end bearing numerous minute tubercles; 

 color, light lemon yellow ; length, l| mm . Deposited beneath dead, empty specimens 

 of Lecanium olece partially raised from the surface upon which they rest ; usually 

 deposited in pairs, the eggs being attached at one side to the under surface of the 

 scale. 



Time from deposition to hatching, eighteen days. 



Larva. — First stage. — Body brownish black ; first segment encircled in front and 

 on the sides with a row of fourteen small tubercles each tipped with a single biistle, 

 except two of the lateral ones each side, each of which bears two bristles. There is 

 also a pair of smaller subdorsal bristles near the posterior end of this segment; sec- 

 ond segment bearing twelve tubercles, arranged on each side of the segment, one 

 subdorsal, three suprastigmatal arranged in the form of a triangle, and two stigma- 

 tal tubercles placed one in front of the other, the anterior of these being much 

 smaller than the posterior one, and destitute of a bristle. Each of the other tuber- 

 cles bears a bristle which is more than twice as long as the tubercle itself, except 

 the anterior of the three arranged in the form of a triangle. This bears two bristles ; 

 one, which is shorter than the other, is inserted below the apex on the front side, at 

 which point this tubercle bears a minute branch; third segment like the second, 

 except that the upper of the three tubercles in the triangle is wholly wanting, leav- 



