14 Journal of the Mitchell Society [December 



of 1919. This has been known before only from Michigan, where it 

 made seriously ill seven people who ate it. 



A peculiar Httle mushroom of the genus Lepiota (L. caeriilescens) 

 which turns a deep indigo blue all over when it dries has been found 

 here. It has been known before only from Missouri and Ohio. 



Apodachlya hrachynema, a minute l)ut interesting and very rare 

 mold growing on dead insects in water, has recently been found in 

 Chapel Hill. It has been reported only once before from America, in 

 Massachusetts. 



Notes on the Oecology and Life History of the Texas Horned Lizard. 



J. P. GiVLER. 



To appear in full in a later issue. 



Artificial Incubation of Turtle Eggs. Bert Cunningham. 



Chrysemys picta Herm. is recognized as a good species. C. mar- 

 ginata Agassiz, C. cinerea Bonnaterre, and C. bellii Gray are all includ- 

 ed under the specific name of C. cinerea. Chrysemys oregonensis Nut- 

 tall, is also provisionally included under C. cinerea. 



In some of the experiments eggs laid in the usual manner w^ere used, 

 but the majority of eggs were taken from the uterus. The latter 

 showed a higher developmental rate. The fundamental requirements 

 are proper moisture and temperature, and in the case of laid eggs they 

 must be secured within a few hours of laying. Development may be 

 stopped by low temperatures for a period of a month at least, and de- 

 velopment of such eggs seems to proceed in a natural manner when 

 brought back to a normal temperature. 



The artificial incubation allows one to keep a record of the incuba- 

 tion time and thus secure a more graded series than is possible under 

 natural conditions. It also makes possible much experimental work 

 on the rate of development, inhibitors and activators. 



Some Considerations in Defense of the General Biology Course. J. P. 



GiVLER. 



To appear in full in a later issue. 



An Interesting Anomaly in the Pulmonary Veins of Man. W. C. 



George. 



In one of the anomalies found this spring in the anatomical labora- 

 tory at Chapel Hill the blood from the upper left lobe of the lung was 

 drained not into the left atrium but into the systemic circulation. A 



