NOTES UPON A COLLECTION OF MYRIAPODS BELONGING TO THE 



U. S. NATIONAL MUSEUM. 



IIY CHAKI.KS II. HOI.LMAN. 



Tlie followiii<r iiotcH are a ('(nitiniiation ot the paper which appeared 

 ill the Proceedings of tlie ^riisemn lor 1888 (p£>. .{43-350). In this part 

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



The following is a key to the seveu species of SplroboJus mentioned 

 in this i>aper: 



a. Scobiiiii al)8ont {Huhgenua Spirohohin). 



b. Repugiiatorial pore opening on posterior diviHion of segments Gracilis. — 1. 



bb. Repugiiatorial ])orc opening on anterior division of st'gments. 

 c. Segments divided hy a transverst- huIcus. 



d. Sulcus obliterated above; elypeal foveohe 84-3 or ;}4-4..('allipus. — 2. 



d(L Sulcus literated above; elypeal foveohe 5-|-5 liAHA.MKNSis. — 3. 



cc. Segments not divided by a distinct transverse sulcus; foveobe L'4■-• 

 S^'Hl^AME.^sIs. — 4. 

 art. Seobina present (nuhf/cniis llhinocrinun). 



r. Anal segment produced into a large, tlat iinicro. 

 /. Anterior i)art of segments without a transverse sulcus; segments 51-56 



Caudatus. — 5. 

 ff. An I erior part of segments with a transverse sulcus; segments 46—18. 



ZOXIIM'S. — 6. 

 ec. Anal segments produced into a hmg, sharp niucro ...DuuE!?!. — 7. 



1. Spirobolus gracilis, sp. nov. 



Diagnosis. — Related to Si^irobolus hrandil Karsch, but the dorsum of 

 each segment smooth and sparsely jiunctate ; anterior part of segments 

 showing concentric striie beneath; tirst segment with subacute sides 

 which have three striie. 



Habitat. — Paramaribo, Surinam. 



Type. — Female, U. S. Nat. Museum. 



Description. — Female. Greenish black, posterior border of segments 

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

 attenuated. V'ertex smooth, sulcus short and shallow; a depression 

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

 close together, above a transverse line. Anteniiie short and thick, 

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

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

 lique strise beneath; anterior i)art showing several concentric strim 

 ben<'ath, but which above disapi)ear under the preceding segment. 

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

 excised. Reiuignatorial pore moderate, placed about on the anterior 

 190 



