DESCRIPTIONS OF TWELVE NEW SPECIES OF MYRIAPODA, 

 CHIEFLY FROM INDIANA. 



By JEROME 7IcIVEIL.I.. 



[With one plate.] 



The types of all but two of the species of Myriapods described in the 

 following paper were furnished by a collection made by Mr. Charles H. 

 Bollmau and the writer in the vicinity of Bloomiugton, Monroe County, 

 Indiana, in the fall and winter of 1885-18SG. This collection contains 

 about three thousand specimens, and is in the museum of Indiana Uni- 

 versity. Of the fortj' species represented in this collection, twelve ap- 

 pear to be new to science. Types of each of these have been sent to 

 the U. S. National Museum. I take pleasure in acknowledging my in- 

 debtedness for specimens to Prof. Henry L. Osborne, of Purdue Uni- 

 versity, to Miss Ivosa Smith, of San Diego, Cal., to Mr. Justus M. T. 

 Myers, of Fort Madison, Iowa, and to Mr. A. E. Brunn, of Gartield, 

 Kans. 



HEXAGLENA,*gen. nov. 



Eyes six, arranged in two divergent lines, close to the bases of the 

 antennae. The head conical, minute, concealed beneath the first scu- 

 tum ; spiracles in one row on each side of the body. This genus belongs 

 to the family Polyzoniclcc and occupies a position between Octoglena 

 (Hood) and Petaserpes (Cope). It differs from Qctof/lena in having six 

 instead of eight eyes; in the size and shape of the first scutum, aiul 

 particularly in the position of the head, being entirely exposed, in the 

 dorsal aspect in Octoglena; wholly concealed in the new genus. It differs 

 from Fetaserpes in having six eyes instead of two and in the position ot 

 the head, which in Petaserpes is concealed beneath the first scutum as 

 far as the bases of the antennae, and in the spiracles which are arranged 

 in one row on each side of the body in Hexaglena and in two rows in 

 Petaserpes. 



1. Hexagleua cryptocephala, spec. uov. Plate xii. 



Light brown or i)archmeut colored above, dirty white below. Dor- 

 sum moderately convex. Venter plainly concave. Heatl conical, as long 

 as wide, very minute and entirely concealed in the dorsal aspect. Eyes 

 six, in two divergent straight black lines near the bases of the antennae, 

 circular in outline and very convex. Antennae very large in proportion 

 to the head, densely pilose, separated at the base by a space equal to 

 width of the proximal joint of the antennae; the joints of the antennaj 

 are of varying lengths, subcjiindrical, scarcely larger distad. Legs 

 almost transparent and colorless, about 85 pj). when extended, not 



* £c, six ; yy/v tj, i)upil of the eye 

 328 



