276 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



itself was miscegenation. In this surmise I v\-as correct, as I afterwards 

 was enabled to fully prove. 



The accurate collector, who was not a naturalist, had put a s Lecontei, 

 and a 2 Interrupto-marginata on one pin, he having taken them in copuli. 

 On a little piece of paper attached to the pin he had noted that fact, and 

 written, " male and female, as you may see." 80 they were too, but not 

 of one species, as he, in his sagacity, had imagined tliey were. It seems 

 that after pinning there still was life enough left in the female to enable 

 her to deposit some eggs in the box ere she was quite dead. These I took 

 out, and in due time the larvte emerged. As usual, the greater number 

 died before maturing, but three carried .successfully through, two pro- 

 ducing the originals of Figs. 5 and 6 on Plate IV. Fig. 7 was drawn 

 from one of the captured examples sent to me by my friend. The larvae 

 were black above with rich yellow dorsal and lateral lines, the latter 

 somewhat irregular and broken ; also with rows of raised blueish black 

 tubercles, from whence proceed tufts of short bristles. Beneath it is 

 pale grayish, with darker marks. Head black. Feet black, prolegs 

 black outside, pinkish on the inside. They were fed on the most con- 

 venient thing that offered, i. e., the leaves of a weeping willow that 

 grew on the paveu)ent near at hand, and afterwards on the Morris white 

 peach trees that grew in my garden. 



The moths, as the figures on accompanying plate show, ai-e marked as 

 the male parent Lecontei, whilst the ground color is that of the maternal 

 relative Interrupto-marginata. Tlie examples are, in size, a little below 

 the average of either parent. 



From the large number of these hybrids I received, indeprndent of the 

 three bred, it would appear that hybridism in a state of nature with 

 these species is very common. Nor do I imagine it to be as rare with 

 other Lepidoptera as is generally supposed, as I have little doubt but 

 that many of the examples of Argynnidce, Cat.ocalce, etc., so puzzling to 

 collectors, are nothing more than bastards, the product of allied species. 



The Larva of Samia Gloveri, Streck. 



BY HERMAN STRECKER. 



A number of living pupa? of this heretofore exceedingly rare species 

 have been received within the last year from Utah, where it appears to 

 be as common as Cecropia is with us in the East. From the moths de- 

 veloped from these pupa?, ova have in some instances been obtained, and 

 several entomologists, myself among the number, have been successful 

 in rearing the larva?. 



On first emerging they were black. After moulting for the first time 

 they have the a))pearance of being black and yellow mixed ; after the 

 second moult they were lemon yellow, with all the tubei'cles black ; after 

 the third moult the color was pale green, with the two dorsal rows of 

 tubercles coral, or rather of a bright rust red, and the lateral ones pale 



