852 Pomona College Journal of Entomology 



lj:s ZOOCECIDIES DF NORD DE L'AFKIQUE 



C. HOW.VKD 



Ami. (Ic la Scic Ent. de France. Vol. LXXXI. 1912. 



This is a paper of 128 pages. It takes up the galls on the various groups 

 of plants beginning with the Alga:- and ineluding eonifers and many of the 

 other groups of plants where galls are better known. There are two pbites 

 and over two hundred small text figures. 



TRO.MHIDIID.E 



ANTONIO BERLESE 



Redia, Vol. VIII, 1912. 



Practically all of this number is taken up with the 290 pages of tliis paper. 

 There are a nuinlier of line cuts and one doulile colored plate. 



FEEDING HABITS OF SCORPION FLIES 



In the Entomologist, for November, 1912, F. W. and II. Campion consider 

 the feeding habits of scorpion fiies. Their observations .show that these insects 

 are carnivorous, they feed on dead animal matter, they do not catch and devour 

 living prey. 



DIE SEIIORGANE DER LARVA UND LMAGO VON DYTISCI'S 

 MARGINALIS 



KARL GHNTHER 

 Zcit. f. Wiss. Zool. C. Bd. Ill, 1912. 



The stemiuata show two sorts of receptive cells, horizontal rods with small 

 sense cells and vertical ones with large visual cells. The rods are, in general, 

 hollow structures bound together by tlie distal ends of sense cells. Near the 

 .six stenimata on either side of the larval head are the so-called eye-spots, 

 "AngenHeck, " described for the first time. These are considered to be visual 

 organs. Tliry have vitreous bodies, ti'ue i-ods. and are connected l).v a nerve 

 with the ()|)tic gauulii n. Tiie stemmata last through metamorj)hosis, so that in 

 the imago they arc without lens and vitreous body. With the development of 

 the retinula the central cell of the eight moves basalwards, from the seven 

 radial i-ctiiiula cells in the proximal row. It does not form a part of the 

 rhabildiii. wliieli is ilii' prciduet of seven cells. 



Iris and retinal piL'iiient were distinguished, they iiave their erigiii from 



(lill'ercllt ceil elements, tile piiillient cells and the retinal cells. 



W. II. 



