NOTES UPON A COLLECTION OF MYRIAPODS BELONGING TO THE 



U. S. NATIONAL MUSEUM. 



BY CHAKLES H. BOLLMAN. 



The following notes are a continuation of the paper which appeared 

 in the Proceedings of the Museum for 1888 (pp. 343-350). In this part 

 is given an account of the foreign material in the same collection. 



The following is a key to the seven species of Spirobolm mentioned 

 in this paper : 



a. Scobina absent (subgenus Spirobohts). 



6. Eepugnatorial pore opening on posterior division of segments GRACILIS. 1. 



6Z>. Eepugnatorial pore opening on anterior division of segments, 

 c. Segments divided by a transverse sulcus. 

 d. Sulcus obliterated above ; clypeal foveolse 3-1-3 or 3+4 . . CALLIPUS. 2. 



dd. Sulcus literated above ; clypeal foveohe 5+5 BAHAMEXSIS. 3. 



cc. Segments not divided by a distinct transverse sulcus; foveolse 2+2. 



SURIXAMEXSIS. 4. 

 aa. Scobina present (subgcnus Rliinocrinus) . 



e. Anal segment produced into a large, flat mucro. 

 /. Anterior part of segments without a transverse sulcus ; segments 51-56 



CAUDATUS. 5. 

 ff. Anterior part of segments with a transverse sulcus ; segments 46-48. 



ZOXIPUS. 6. 

 ee. Anal segments produced into a long, sharp mucro DUGESI. 7. 



1. Spirobolus gracilis, sp. uov. 



Diagnosis. Eelated to Spirobolus brandti Karsch, but the dorsuin of 

 each segment smooth and sparsely punctate; anterior part of segments 

 showing concentric striae beneath ; first segment with subacute sides 

 which have three strife. 



Habitat. Paramaribo, Surinam. 



Type. Female, U. S. Nat. Museum. 



Description. Female. Greenish black, posterior border of segments 

 brownish ; legs and antennae dark. Slender, anterior segments scarcely 

 attenuated. Vertex smooth, sulcus short and shallow; a depression 

 between eyes; clypeus rather rough, not deeply excised, foveola 1 2+2, 

 close together, above a transverse line. Antenna 1 short and thick, 

 reaching second segment. Ocelli 43-45, the G rows forming a suboval 

 patch. Segments smooth, sparsely punctate; posterior part with ob- 

 lique striae beneath; anterior part showing several concentric stria? 

 beneath, but which above disappear under the preceding segment. " 

 Sides of first segment subacute, with 3 striae; anterior border slightly 

 excised. Eepugnatorial pore moderate, placed about on the anterior 

 rjo 



