No. 1810. DESCRIPTIONS OF NEW MILLIPEDS— COOK. 151 



EURELUS, new genus. 



Type. — Eurelus soleatus, a new species from south Texas. 



Diagnosis.— More nearly related to Onychelus than to any other 

 recognized genus. Differs in the much greater size and more fusi- 

 form shape of the body, in having the anterior legs of the males armed 

 with large coxal processes, but without enlarged claws, and in the 

 very different structure of the copulatory legs. 



Description.— Body rather large and robust, about nine times as 

 long as broad, subfusiform in outline, gradually narrowed in front 

 and more abruptly behind, especially the last five segments. 



Antennas moderately robust, not clavate; second joint longest; 

 joints 3-5 subequal; joint 6 somewhat shorter and narrower than 

 joint 5. Antennas not inserted under the first segment, but accom- 

 modated by a large lateral depression of the head and the mandibulary 

 stipe. In comparison with Onychelus the antennas appear more slen- 

 der, and the sixth joint does not appear to be reduced in that genus. 

 Olfactory cones four in both genera. 



Eyes of over 40 closely clustered, flattened ocelli, arranged in seven 

 or eight rows. 



First segment rather strongly emarginate on each side behind the 

 antennas and the somewhat prominent posterior corner of the 

 mandibulary stipe. Lateral angle acute, with a prominent, thick- 

 ened anterior margin. The groove that bounds the margin remains 

 very distinct as far up as the middle of the eye and then suddenly dis- 

 appears. Second segment not produced below the somewhat pro- 

 jecting angle of the first segment. 



Segments of middle of body with only a slight and rather indistinct 

 constriction between the midbelt and the hindbelt. Forebelt with 

 very fine and somewhat broken striations extending slightly beyond 

 the very indistinct anterior suture. Midbelt and hindbelt marked on 

 the surface with the same minute punctations, but somewhat more 

 numerous on the midbelt. Posterior suture usually indicated by a 

 fine superficial striation. Median suture indicated by a very fine and 

 indistinct striation, not grooved on the hindbelt as in Onychelus. 

 Ventral striations beginning well below the pores, especially on pos- 

 terior segments; extending farther up on the midbelt than on the 

 hindbelt, but more irregular and passing below into a fine reticu- 

 lation; all these ventral markings much more distinct than in 

 Onychelus. 



Repugnatorial pores inconspicuous, located above the middle of the 

 segments, though hardly as far above as in Onychelus; on or in con- 

 tact with posterior suture, usually below the lateral suture, but in con- 

 tact with it or nearly so, the suture being sometimes slightly sinuate 

 above the pore. The pores of the sixth segment are distinctly lower 



