Jan., '03] ENTOMOLOGICAL NEWS. 29 



fibres of the intestinal wall, produce the secretion. These follicles have 

 been regarded by earlier authors as furnishing digestive juices ; Dr. Porta 

 finds them in all insects which he has examined. Ordinarily, he supposes, 

 the product of these follicles is poured into the intestinal cavity, but when 

 the insect is irritated the intestine is contracted "and the liquid which it 

 contains passes into the calomic cavity (the walls of the intestine being 

 porous) and thence escapes by the fissure described by Lutz, which is 

 found in the articulation of the leg at the extremity of each femur." 

 Other arguments which are cited in support of this view are that the 

 swiftness of the blood current, as observed in transparent insect larvae 

 (e. g. Ephemerids), would preserve the blood from mixing in the coelom 

 with this expressed intestinal content ; that the bodies in the secretion 

 considered by Ley dig to be blood corpuscles are mere accompaniments 

 like salivary corpuscles in saliva; that the elasticity of the intestinal wall 

 wonld permit passage of the intestinal contents through it ; that when 

 irritation of a Coc( inella larva is prolonged, after the yellow secretion, 

 there follows from the same apertures, "a black or greenish liquid, which 

 is none other than the ingested material which has already undergone the 

 first digestive modifications ;" " finally the relation between the quantity 

 of liquid secreted and the condition of the animal is easily shown, the 

 biliary secretion b jing in correlation with the alimentary substances con- 

 tained in the mid-intestine, there being none when fasting is prolonged." 

 From the physiological point of view the asserted existence of biliary 

 acids in this insect is particularly interesting. Dastre and Florescq stated, 

 as recently as 1898, '* To our knowledge, biliary acids have never been 

 met with in invertebrates whose hepatic secretion has been procured" 

 (Archives de Physolgie, Paris, xxx, p. 210). It may also be noted that 

 Dr. Porta states "The isolated Malpighian tubes do not give Pettenko- 

 fer's reaction." — F. P. C. 



CORRECTIONS. 

 Ent. News, Dec, 1902, p. 303, line 3 from bottom, for Euhagenia read 



Etihage7ta. 

 Ent. News, Dec, 1902, p. 318, line 6 from bottom, for Temple read 



Tempe.— T. D. A. Cockekell. 



Notes and. NeWvS. 



ENTOMOLOGICAL GLEANINGS FROM ALL QUARTERS 

 OP THE GLOBE. 

 The following visiting entomologists have recently been studying the 

 collections of the Vmerican Entomological Society and the Academy of 

 Natural Sciences of Philadelphia. Dr. Walther Horn, Berlin ; Mr. Wm. 

 Beutenmullei, Ne'v York ; Mr. Rolla P. Curry, U. S. National Museum, 

 Washington, D. C ; Mr. August Busck, U. S. Depart. Agric, and Mr. H. 

 A. Ballou, Amherst, Mass. 



