190 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
bb. Prefemur of twentieth legs not at all armed at distal end 
above; prosternum with no transverse sulcus across entire 
width of anterior portion. 
Head wholly without longitudinal sulci; last dorsal plate 
with a median longitudinal sulcus; antennae composed 
of from twenty-five to thirty-one articles of which the 
eighth to seventeenth proximal ones are glabrous. 
S. polymorpha Wood. 
aa. First dorsal plate without any such deeply impressed transverse 
cervical sulcus. 
b. Prefemur of nineteenth and twentieth pairs of legs armed 
dorsally at distal end with from one to six spinous teeth; 
head with longitudinal sulci............ S. alternans Leach. 
bb. Prefemur of nineteenth and twentieth pairs of legs unarmed 
at distal end above; head without longitudinal sulci. 
ce. Prefemur of anal legs armed ventrally with from six to 
nine spines; last dorsal plate with a fine median longi- 
tudmalsisuleus(iccd poses. Soe ees S. morsitans Linné. 
cc. Prefemur of anal legs with only three, or less, ventral 
spines or sometimes (in varieties) with none; last dorsal 
plate without a median sulcus.....S. subspinipes Leach. 
SCOLOPENDRA GIGANTEA Linné. 
Syst. nat. ed. 10, 1758, 1, p. 638; Kraepelin, Revis. Scolop., 1903, p. 233; 
Brélemann, Cat. Myr. Brésil, 1909, p. 17. 
Scolopendra gigas Leach, Trans. Linn. soc. London, 1814, 11, p. 383; Meinert, 
Proc. Amer. philos. soc., 1886, 23, p. 191. 
Scolopendra insignis Gervais et Goudot, Ann. Soc. ent. France, 1844, 2, p. 
29. 
Scolopendra prasinipes Wood, Proc. Acad. nat. sci. Phil., 1862, p. 11. 
Scolopendra epileptica Wood, Ibid. 
Scolopendra annulipes Lucas, Bull. Soc. ent. France, 1884, ser. 6, 4, p. 74; Brdéle- 
mann, Cat. Myr. Brésil, 1909, p. 18. 
Localities. State of Amazonas: Obidos! James and Hunnewell, 
Nathaniel Thayer expedition. M. C. Z.; State of Para: Santarem! 
(Chas. Linden, M. C. Z.); State of Pernambuco: Villa Bella! (J. C. 
Fletcher; M. C. Z.). Lucas’s type of S. annulipes was also from 
Brazil, the definite locality not being indicated. 
