.\fisc«' UdHfOtlH. 1 'i 9 



*' Prof. Cockerell has dniwii my iilloiition to i\w incl that lio 

 publisluMl a dt'scription of a ('eri>itltiHtfs eiffarum (from W. Afriia) 

 in tho ' Krilomol(»<;i.st * of May l^W. lEe has also sent mo typicil 

 examitles of tho insect, which sliow me that it is iik'ntical with my 

 C. (ifricinn.^ (Viir. cri'<tatux)\ \nii. & Mag. \at. Hist. lS!<U,iv. p. l;)0|. 

 Prof. (,'ocktTfll in Ills doscriptioii <,'ivos the luimhcr of antennal joints 

 as six only, but ho particnlarly moiitioiis tluit his specimens were 



not in very f^ood preservation 1 should ho greatly obliged 



if you would send a short note to ihe ' Annals and Magazine ' to 

 correct the name." E. Eknkst Green. 



On thi' Lntiral CejihaJic Orrjans nf (}\nmfir\». 

 By N'. DK ZoGBVK. 



Tho celebrated German anatomist Francis Lovdig has depicted, on 

 one of the plates accompanying his unfinished work ' I'eber den hau 

 des ihierischen Korpcrs,' published in 18(i4, a headof Glomeris^ having 

 on its lateral walls two horseshoe-shaped organs presenting in their 

 interior a somewhat considerable cavity which communicates with 

 the outside by means of a very narrow longitudinal slit. Levdig 

 has shown that the internal wall of these organs is very thick, that 

 it is innervated by a branch coming from the neck in the region of 

 the optic trunk, and hence that these structures ought to be looked 

 upon as organs of sense. 



Following Levdig, the Hunganan zoologist Comtisvary described 

 the same organs in several myriapods without giving a more detailed 

 account of them ; it is by the name of Comdsvnn/ that thev are 

 to-day designated. The French zoologist Saint- Remy and' the 

 German entomologist Curt Hennings so call them, the latter having 

 given a description of their histology in the third number of the 

 ' Sitzungsberichtc der Gesellschaft naturforschenden Freunde zu 

 Berlin ' for the year 1899. 



In my article on the relationships of the Arthropoda, published in 

 1S92 in the -Comptes Rendus du Congres international de Zoologie,' 

 I pointed out what great morphological interest these organs 

 possess, especially if they are compared with the embryonic cephalic 

 grooves of other myriapods, of some insects and crustaceans, and with 

 the cephalic organs of some annelids, for example the Capitellidfe. 

 Unfortunately Glomerii^ is very rare in Russia and only met with in 

 the south-western portion of the empire : it was not therefore until 

 the summer of 1808 that, through the kindness of M. F). Bouvier, 

 Professor at the Jardin des Plantes, I was able to obtain enough 

 material for my researches. I then received specimens of Glomeris 

 mnrgljinfii which M. Bouvier had collected in the forests in the 

 neighbourhood of Dieppe. Every animal composing two successive 

 consignments had perished during the long journey from Dieppe to 

 Moscow ; but a third batch sent after the great heat of the summer 

 arrived eafe and sound at Moscow, and provided me with mat^^rial 

 for my researches. 



The lateral cephalic organs of (^I'loineris have a verv curious and 



