119 



that the catori>illar witroduces into itself the c^^j^s of tlie i)arasite with 

 the food, ami that tlie saiae could well be the ease with many other 

 caterpillars infested with Taehinids, yet I can not suppress some doubt 

 regarding' this mo<le of involuntary introduction of the i)arasite. Pro- 

 fessor liiley has also expressed his doubt on this point (Insect Life, 

 1888, vol. I, p. <}2.) The peculiar provisions in female Tacliinids for the 

 deposition of the eggs, their hasty behavior while iu search of the hosts, 

 and further, the fact that many eggs of the ])arasites must be crushed 

 by the caterpillar in feeding; finally, tlu^ observation (cf. Tiob. Desv. 

 Ann. Soc. Ent., France, 1850, p. 162) that in Taehinids ovii)ositiou on 

 the host a(3tually takes place — all this renders the unusual introduction 

 said to take place in the Uji hardly probable. 



FURTHER NOTES ON PANCHLORA. 



s By C. V. Riley. 



Since publishing the article on the viviparous cockroach in the last 

 number of Insect Life, 1 have ascertained some further interesting 

 facts relative to the viviparity of the insect. In conversation with Mr. 

 Gustave Guttenberg, teacher of biology in the Pittsburg High School, 

 at the recent meeting of the A. A. A. S., and also by a letter received 

 from him August 27, transmitting specimens, he informed me that he 

 had found a green cockroach which, while being examined by one of 

 his scholars, had given birth to about thirty living young, besides some 

 individuals still iu their " pupa cases" [egg sacs] and a cluster of about 

 twelve "pupte" [eggs] arranged side by side. The adult insect was said 

 to have been yellowish-green, while the young were about the same color. 

 These were active and began to scatter at once. The specimens in 

 question proved, as I suspected, to be an adult female with young, 

 of Panchlora riridis. The eggs were arranged in a double row side by 

 side, with no visible enveloping membrane. A number of them had 

 hatched, and others stiU contained embryonic larvae. The young larvjB 

 that were born vdviparously were much darker in general color than 

 the adult, but were lighter colored than the specimens previously ob- 

 tained by me. The arrangement of the eggs was not perfect, and indi- 

 cated that the (;luster, as it originally existed, had been broken up, and 

 also that a number of the eggs were separated, so that the exact shape 

 of the mass could not be determined. 



Very fortunately, however, another specimen of the insect was re- 

 cently forwarded to me by Dr. Carl F. Gissler, of Brooklyn, N. Y., 

 with the report that he had captured it on his window sill, and that it 

 was alive. The insect iu question, which was a large pregnant female, 

 died in transit. Dissection, however, resulted in obtaining a perfect 

 egg-cluster. This was arranged in a semicircle, and consisted of a 



