65 



5. The digestive apparatus I found to be no clear rneans of 

 distinction. Aruong the Laniatores there are some whose coecal 

 pouches are almost as couiplicated as those of our common 

 Phalangids, but other again have guts with only few ramifi- 

 cations, and which are more like those of Insidiatores. 



6. The nervous system of the Laniatores shows typically 

 fused abdominal ganglia (as Sörensen has already described). In 

 the Insidiatores we find longish carrot-shaped unfused ganglia 

 in the abdomen, resembling the short pear-shaped ones of the 

 Palpatores. 



7. To finish with : the genital orgaus show some vital differences. 

 Here again it is difficult to give a clear idea without drawings. 

 Suffice it therefore to state that the penis of Insidiatores is always 

 short and stout, and provided with a powerful extensor glandis, 

 not exactly of the same structure as that of Palpatores. It is known 

 that the Laniatores are entirely without this glans and muscle. 

 Besides, the vasa deferentia, morphologically, are so aberrant, 

 that those of the Laniatores are much more like those of the 

 Palpatores than of the Insidiatores. 



About the sub-order of the Cyphophthalmi E. S. I have no 

 firm conviction. Pocock is ready to accept this division, but 

 Sörensen, who discussed the subject some time ago, even expresses 

 a doubt about its right of existence, and he thinks it not im- 

 possible that the family Sironidae ought to be classified with the 

 Palpatores. We have better await further investigations. 



As to the Oncopodidae, which differ in some important characters 

 of greater value than family-characters, they need be separated 

 from the remaining Laniatores. 



Although I arn therefore in many respects of Pocock's opinion, 

 I cannot follow him, where he assumes the Insidiatores to be 

 nearly allied to the Laniatores. The differences sketched above 

 appear to me to be so radical that we are bound to give more 

 prominence to them. 



I propose, therefore, the following classification of the group : 



