chamberlin: myriopoda of the Australian region. 201 



583. Dinematocricus persimilis, sp. nov. 



Type.— M. C. Z. 4,791. Paratypes.— M. C. Z. 4,792. Fijis: 

 Nadarivatu (W. M. Mann). 



In coloration the pattern is similar, but the light marking on each side of the 

 dorsum of each segment in D. leucopleurus has the part or spot on the prozonite 

 obviously farther mesad than that on the metazonite, whereas the reverse 

 relation of the spots holds in the present species; in leucopleurus also the 

 anal tcrgite is black throughout excepting a narrow caudal marginal stripe, 

 and in the present species the side of the tergite is fulvous or whitish in all 

 specimens farther dorsad than the light lateral region of the other segments; 

 and similarly the lateral region of the collum is conspicuously lighter, these 

 large light areas on first and last segments forming a striking feature in the 

 coloration of the species. 



The second tergite extends much farther below the collum than in leuco- 

 pleurus. 



Number of segments, thirty-eight to forty-one. 



Diameter of female, up to 3.2 mm.; of the male, up to 2.8 mm. 



Very close to D. leucopleurus in coloration, the sculpturing of the 

 segments, in lacking scobina and in other features of general structure. 

 In the gonopods of the male an easily detected difference is in the form 

 of the median plate; in this the basal division is much larger, more 

 strictly semicircular with the caudal margin much less obviously 

 arcuate; whereas in D. leucopleurus the distal process is nearly parallel- 

 sided except toward the tip, in the present species the process is 

 strongly acuminate from its base to a narrow tip, the latter, however, 

 rounded and not narrowing or itself acuminate; it equals the telo- 

 podite, which in leucopleurus is shorter. In the posterior gonopods 

 the lesser branch much shorter and more slender than the other, very 

 closely appressed to it, a little divergent at tip. 



584. Dinematocricus leucopleurus, sp. nov. 



Type.— M. C. Z. 4,757. Paratypes.— M. C. Z. 4,758, 4,759, 

 4,764. Fijis: Somo Somo, Lasema, Levuka (W. M. Mann). 



Sulcus interrupted in the frontal region. Foveolae 2 + 2. 



Collum much exceeded below by the second tergite. A longitudinal fine 

 sulcus or stria at level of eye on each side connected with the one of opposite 

 side by two transverse striae. 



Anal valves exceeding the scutum. These parts with coriarious lines, but 

 not striate like the preceding segments. 



