4.72, MR. C. WITH ON PHALANGIID® 
Gagrella dentata,u.sp.,isalmost completely smooth, but G. (Me- 
lanopa) tristis (Thor.) is granular all over. The sides of the 
cephalothorax are sometimes spinous (G. spinulosa, Thor.). The 
frontal eminence is in Gagrella dentata provided with a tooth 
directed forwards and upwards ; in G. sepia (Lom.) there is arow 
of large granules in this position. The procursus frontales differ 
very mucb, but their shape has no specific value. The openings 
of the stink-glands are distinct and small. The ocular tubercle 
has a very great systematic value, at least within the limits of 
the genera. It is high or low; and the diameter of the eyes is 
either smaller or larger than the distance between their lower 
edges and its base. Its armature varies more or less, and must 
therefore be considered with caution (cf, for ex., Hypsibunus 
vigilans and Ceratobunus brevipes). 
The basal joint of the antenna is smooth or granular above. 
The “fingers” are provided with a larger tooth near the base 
and a crenulated edge, but their armature is sometimes a little 
different from what is customary, as, for example, in G. hirta and 
G. triangularis, in which one or both “ fingers” are provided 
with a large tooth near the middle, with a succeeding smooth 
area and the usual crenulation. 
The labrum (epistoma) is slender and pointed ; it is sometimes 
in G. triangularis eniarged towards its extremity. ‘The procursus 
maxillares are to a certain degree cifferent in the species. The 
length and armature of the palps are important features, but on 
the contrary, while I do not think that the variations m length 
or absence of the apophysis of the patella are of much significance, 
I attach special value to the sexual differences of the palp. Such 
species as Gagrella flavimaculata and G. splendens can be very 
well distinguished by the palps of the males. 
The length of the legs differs very much in the species and is a 
matter of importance. 
The false articulations of the 2nd pair of tibie are often well 
developed, and the femora of these appendages in Scotomenia 
cetrata, Thor., and Ceratobunus brevipes have false articulations 
also. I believe, however, that Karsch (13. p. 308) much over- 
estimates the importance of this character, by founding his genus 
Pseudarthromerus upon it. 
The colour has, of course, a certain systematic importance. 
The difference between the males and the females is not so 
markedagin many other Phalangiide. It is difficult to distinguish 
