4 Dr. *S: the Rev. S. Graluun Bracle-P>irks— 



pore-field. Similar openin*;s are sometimes visible on llie 

 e{)isteni:il plates before and behind the \ey^s (2 /3 and 2 7). 



Internally (leophiloniorphs present the charaeteristic 

 featnres of the artiiropod body, little but the integnmentary 

 glands ealliiig for speeial notiee here. These glands are not 

 easy to stndy and our knowledge of them is, as yet, imper- 

 fect. VerhoelY (12), pj). 33 tt scijf/., has dealt with them in a 

 passage which we have translated as follows: — 



"Sternal glands occur in most Geo])hiliils *, but there is 

 great variety in their anangement. Sometimes, and most 

 frcqnently, they are ])resent as isolated glands, sometinn s 

 tliey ar(! found in loose clusters, sometimes in dense groups. 

 In the last case their openings form a pore-lield, which 

 generally lies in the middle of the sternite and is sometimes 

 surrounded by a chitinous border. When the pores and 

 glands are arranged in a dense group, scattered glands often 

 occur too. The loose clusters are not infrequently found in 

 pairs posteriorly, and often in two pairs in the four corners 

 as well. Nor is the distribution of the sternal glands by any 

 means always the same on all the ventral ])lates of one 

 species : much more usually a great diti'erence is noticeable 

 between the anterio-postci'ior parts and the middle. Some- 

 times only the most anterior of the sternal platts have gland- 

 groups {Scheiic/i/Ia. as a rule), and less usually only those of 

 the posterior end of the body have them. ]\lore frequently 

 it happens that a band-like group of glands is found on the 

 anterior segments at the posterior edges of the ventral plates 

 (^Geopli'ihts, in some cases), and in those instances there is a 

 division of the glands into two parts in the case of the plates 

 of the mid-trunk, and perhaps in those of the posterior 

 segmems too. The isolated glands of the ventral plate 

 empty independently to the outsiile. These cells are 

 distinctly elongate and have the nucleus in the region of the 

 inner end. Their contraction is caused by muscle-fibres 

 (|)latc V. fig. 9, foi.f), Mhich are placed around the isolated 

 inlands and may lainifv and (;xhibit tjansverse striations 

 (Duboscq). The i^landidar fluid is of very varying colour : 

 in lliinuiiluriiun (jubrlciis it is rose-red, so that if anything 

 irritates an indivulual of this species it becomes covered ou 

 the ventral surface with a row of rose-red droplets. In 

 other Geo])hilids, e.g. ClKi-tcclichpie, the fluid is more watery 

 and clear. iMorcovcr, it is ihisc \entral glands wliicli cause 

 the phos])hoiescence of certain Gcophilids, but it has, of 



* I. e., (!oo]ilii]iiiiior|ilis, .■-iiiiilarly, in some other places in this review, 

 t This is repri, (ItiO'd as mir lijr. H. y. r. 



