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. liolymorpha 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. 

 c. Prefemur of anal legs armed ventrally with from six to 

 nine spines; last dorsal plate with a fine median longi- 

 tudinal sulcus S. morsitans Linne. 



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 Linne. 



Syst. nat. ed. 10, 1758, 1, p. 638; Kraepelin, Revis. Scolop., 1903, p. 233; 

 Brolemann, Cat. Myr. Bresil, 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 epilepiica Wood, Ibid. 



Scolopendra annulipes Lucas, Bull. Soc. ent. France, 1884, ser. 6, 4, p. 74; Brole- 

 mann, Cat. Myr. Br6sil, 1909, p. 18. 



Localities. — State of x\mazonas: 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. 



