332 



tered here and there. The 1 st tergite or nuchal plate with a fine in- 

 ferior carina as in Z. nigriceps; the 2 nd tergite formed as in that 

 species; but the posterior borders of the others more markedly emar- 

 ginate laterally, owing to the production posteriorly of the inferior 

 angle; anal segment formed as in Z. nigriceps. 



Copulatory feet almost exactly as in Z. nigriceps. 



Length about 16,5 mm., width 8 mm. 



Order limacomorpha nov. 



This new order is proposed for the remarkable genus Glomeridesmus 

 which is in many respects intermediate in character between the 

 Oniscomorpha and some families of Helminthomorpha. It resembles 

 the Oniscomorpha in the structure of its segments and legs, in the 

 absence of repugnatorial pores, in the absence of copulatory organs 

 upon the 7 th segment and their presence at the posterior end of the 

 body, as also in the fact that the last tergite is incomplete below 

 and merely forms a hood to cover the last pair of legs. But it differs 

 markedly from the Oniscomorpha and approaches many of the Hel- 

 minthomorpha in having the body tapering anteriorly and posteriorly, 

 the anal tergite not enlarged and the anterior segments similar in 

 form, the second not being so large as the 3 rd and not much larger 

 than the 1 st . 



Latzbl ') has already proposed the family Glomeridesmidae for the 

 genus ; but since Dr. Max Weber obtained only one specimen of it — 

 which being unique must be treated with respect and not dissected 

 for the discovery of characters — I will not here enter upon a detailed 

 discussion of its generic features ; especially as these will be fully dealt 

 with in my forthcoming paper upon the Diplopoda of the West-Indies. 



For the present then the following brief characterisation will suffice. 



Family glomeridesmidae. 



Glomeridesmus , Gervais. 



Ins. apt. IV, p. 86. 

 Foramina repugnatoria invisible. 

 Body composed of 20 segments. 



1) Die Myriopoden Ost. Ung. Monarchie II, p. 124. 



