89 



soiuetinies receding soinewliat from tlie teniiinal end of the mine 

 before pupating. Some were fonnd with the anterior end })r()- 

 jecting thrn a break in the dead epidermis of the leaf. (i-Tnnn. 

 long, slender, nearly cylindrical ; pale greenish, head, wing- 

 sheaths and leg-sheaths dark fnscons to nearly black just l)efore 

 the emergence of the fly. Thorax with two yellowish brown 

 dorsal horns, the respiratory processes, projecting forward with 

 the ti|)s curved ventrally. Leg-sheaths of equal length, extend- 

 ing along ventral side to the apex of the fourth abdominal seg- 

 ment ; wing-sheaths placed laterally, extending to apex of sec- 

 ond abdominal seginent ; margins of abdominal segments mi- 

 nutely roughened as in the larva, which enables the pupa to 

 force itself half way out of the mine before the emergence of the 

 fly ; apex of abdomen slightly bifid. 



This is apparently a very remarkable habit for a cranefly, as 

 I have been unable to find any mention of such habits in litera- 

 ture. The larvae of those species that have been studied feed 

 at the roots of plants, beneath dead bark, in rotten logs and 

 other decaying vegetation, etc., some are aquatic, and others live 

 on leaves like caterpillars. There are numerous species of Di- 

 cranomyia in the mountains of the Hawaiian Islands, many of 

 which are yet undescribed, and the habits of the larvae are 

 mostly unknown. It may be that other species may be found to 

 have this leaf-mining habit when their habits are studied. 



XOVEMBEE 5Tn, 1914. 



The one hundred-eleventh regidar meeting was held in the 

 usual place. President Swezey in the chair. Other members 

 present : Messrs. Giff ard, Ehrhorn, Fullaway, Tllingworth, 

 Kuhns, Osborn, Pemberton and Potter ; and ]\Ir. C. F. Mant, 

 visitor. 



Minutes of previous meeting read and approved. 



Mr. Swezey proposed the name of Mr. C. F. Mant for active 

 membersliip in the Society. 



EXTO:srOLOGICAL PROGRA:sr. 



]Mr. Ehrhorn read from the October, 1914, number of 

 Science, a paper by Fernando Sanford of Stanford University, 

 giving results of the use of Cyanide of Potassium injected into 



