THK MVHIAI'OhA n| NnKTII AMKRICA. 40 



6. SpiroboluM pensaoolte, tp. iii>> . 



haiU jjurii al><>vo, sfj^innits iiiiirv;iii«'*l with n'ddisli lirowii; t'aoc, 

 anterior ami posterior s«';;iiuMit hri;;lit ;;r«Tn ; iwi ami aiitt'iiiia* litfliter 

 tiiaii ill imnf/iiintiiH. MiNlnatcly ruhiist, attiMiiiatt'(i IhIoh', t\w. twrlvc 

 aiit«Tiot' H«*y:im'iitH stMiifwIiat tiattnu'«l or crasHatr ImmmsiMi, m»t siiiootli. 

 Vrrti'X siiiootli, spaisriy iMiiictatr: |>tiii<-tatiuiis imt uunv iiuiiH'rous l>e- 

 twrcii tlui «'y»'S, im'diaii snlnis inlcrnipttMl ; r!\ p«'al fovt'ola' S. Aiitniiia' 

 short. not qiiitr rrathiii}; tlir posterior mai;iin ot'aiiti'iioisryim'iit. Kyt's 

 ilistimt, trap«'/oi<lal; orrlli, l.">, anaiit^rd in 7 .snirs. S«';;im'iits, 19. 

 First M'tjnu'nt with tlu' sides suhaciitr, maininat*'. anterior honler 

 sinuate; seeond segment with tlie lohe less broad and more trian<;u!ar 

 than in ninnj'ni<iiun. Other segments moderately roii;^h, pnnetutioiiH 

 most nnmerons on tlie posterior division; stria* de<'urvetl, stron^jf ami 

 rib like on the posterior division ot" the- sej;ments. Last se;;ment 

 pointed, not passing the anal valves, densely punctate; anal \alv<'H 

 mar;;inat»', rouy:h ; anal scale rounded. l{epu;;natorial pore large, 

 placed on the anterior divisi«>n: suture moderatidy bent. I'aiis of 

 feet, J»-', ino«lerati'ly extending; beyond the sides of the body. Ken;,'th 

 of body, 80 ; width, 0' 



Habitat. — I*ensae<da, Flori«la. 



I liave had one female of this species for examination. It is niore 

 relat^'d to niartfiiiatuM than any ollu'r of our North American si)ecie8. 

 From marfi'niatns this spe<-ies is easily sejjarated by the distinct atten- 

 uated body, dypeal foveola', form of secoml segment, arrangement of 

 the o<elli, and color. 



7. SpiroboluB uncigerus \Viiu«l. 



Spinthitliis uiiriiiinis Wood, I'lix'. A< ad. Nat. Sci. Pliila., 1."), 18»>J (Califoruia) 

 Dark brown, edge of segments lighter, an indistinct light median 

 line; feet chestnut. Moderately r«>bust, a little crassate, not atten- 

 uated, only a few anterior segments tlattened beneath, not smooth. 

 Vertex moderately smooth, distinct reticulating lines, sparsely punc- 

 tate, median sulcus interrupted; cly[»eal foveohe S, Antenna' short, 

 not reaching the ]>osterior border of anteiior segment. Kyes indistinct, 

 subtriangular : ocelli, 32, arranged in 7 series. Segments, 40. First 

 segment witii the sides acute, nuirginate, anterior margin excised, 

 rough, densely punctate; second segment moderately ]>rodiued be 

 neath, roumled in front. Other segn«ents rough, densely punctate; 

 numerous short lines, stria' strong, not much decurved. Last segment 

 acutely rounded, not ])assing the anal valves, densely punctate; anal 

 Valves margiuate; anal scale rounded. Repuguatorial pore mo<lerately 

 large, placed in the anterior ])art, sulcus extending backwards, deep, 

 transverse suture bent. Pairs of U'ot, 8(5, <'(|ua1ing the width of body. 

 Mtdr: coxa' of the third pair of iWt juoduced trom beneatii into a long, 

 spatulate ajtpendage. \'entral ]date moderately produced in the mid- 

 dle into a sharp i)oint. (lenitalia: inner part of the anterior plate 

 2097— No. 4 



