28 H. J. HANSEN. 



of tlie dorsal setie lialf as long as the depth of the metatarsus. 



11. S. crassicoriiis, u. sp. 

 h. The second scutum with the hind margin flatly emargi- 

 nate, the emargination not angular in the median line; its 

 antero-lateral set^e very long, much longer than the breadth 

 of the proximal antennal joints. The last pair of legs with a 

 dorsal seta on the metatarsus two thirds as long as the depth 

 of this joint . . . 12. S. pauperata, n. sp. 



Group I, 



1. Scutigerella immaculata (Newport). PI. 1, figs, la 

 — 1 V, 2 a— 2 f, 3 a— 3 h. 



1845. Scolopendrella immaculata, Newport, 'Transact. 



Linn. Soc. Lond.,' vol. xix, p. 374, pi. xl, 



figs. 4 a, h, c. 

 1851. S. immaculata, Menge, ' Neueste Schrift d. naturf. 



Ges. Danzig,' iv, H. 4, ii, p. 13, Taf. i, figs. 24—29 ; 



Taf. ii, figs. 1— 2G. 

 1871. S. immaculata, Packard, ' Amer. Naturalist,' xv, 



p. 700, figs. 1—1 e. 



1884. S. immaculata, Latzel, 'Die Myriop. d. r)ster.-ungar. 



Monarchic,' ii, p. 15, Taf. i, figs. 3 — 9. 



1885. S. immaculata, Berlese, ' Acari^ Myriopoda ct Scor- 



piones hucusque in Italia rep.,' fasc. xxi, No. 9. 

 188G. S. immaculata, Grassi, 'Mem. d. Reale Accad. d. 

 Sci. di Torino,' ser. 2% T. xxxvii, p. 594, Tav. ii 

 (several figures). 



(In this list only the more essential descriptions have 

 been included; Latzel gives a complete synonymy until 1882, 

 and since that year the species has been mentioned or shortly 

 described by several authors.) 



Material. — Many specimens from several countries in 

 Kurope and from Algeria. I have examined also specimens 

 from Buenos Ayrcs and from Austin, Texas, and these will 

 be treated separately under "Variation." 



Head. — Moderately broad. The lateral margin rounded 



