130 A. C. OUDEMANS. ACARI. 



Amblyomma scaevola Oudms. 



(Plate III, fig. 51—58). 



1905 March 1. Amblyomma scaevola nov. sp. OUDEMANS in Entomologische Berichten, 

 n°. 22, p. 216. 



Patria: New Guinea (Manokwari, Ma)', 1903; 1 ex.). 

 Found by Messrs. de Beaufort and Lorentz. 



Maie (Fig. 51 — 58). Lengtli 5700 //. without the rostrum, width 5000,'^ before the first 

 festoon. Colour dark brown with lighter narrow margin from the eyes to the first festoon, 

 and lighter triangles between the festoons, scattered with very few mother-of-pearl spots. The 

 portion which agrées with the female dorsal shield lighter, with more mother-of-pearl spots, 

 especially inward, before the eyes two large such spots. Texture of dorsal side smooth, 

 bare, with large pores especially quite behind the portion which agrées with the female 

 dorsal shield and to the sides of the médian streak of this shield; this médian streak, nearly 

 as wide as the rostrum has no pores. The ventral side is wholly provided with wrinkles, 

 which are united by smaller ones, so that the texture of this side imitâtes a net-work, the 

 knots of which are pores of very différent size (Fig. 53). The wrinkles are the best discern- 

 able around the base of the rostrum. 



Dorsal side (Fig. 51). The largest width coincides with the stigmata, before the first 

 festoon. There are eleven festoons; the médian one is the narrowest; next to this are the 

 two widest festoons. Eyes not very distinct. Cervical grooves short, nodded inward. No mar- 

 ginal grooves. The médian festoon is longer than wide; the next one as long as large, the 

 remaining ones wider than long. Moreover the colour and texture of the dorsum are described 

 hereabove. 



Ventral side (Fig. 52). Génital apertnre small, in a line before the coxae II. Anus 

 between the second and third part of the length of the créature. Peritremata piriform, with 

 a smooth margin, extremely finely scaled. Génital grooves undulate, ending posteriorly a 

 little aside of the anterior ends of the anal groove. Postanal groove short, extending not beyond 

 half the distance between the anal groove and the posterior edge of the body. Ail the coxae 

 with a short dark tubercle. 



Epistome square, wider than long (Fig. 51). 



Mandïbles (Fig. 54). Sheath of mandibles chagrinate by longitudinal and oblique wrinkles, 

 anteriorly provided with hyalin long triangular membrane (Fig. 56). Fixed finger truncate with 

 little square prolongation. Internai apophysis long, fixed on base of fixed-finger, truncate, 

 with reflexed dorsal blunt tooth and external tooth; free finger or external apophysis ending 

 rhomboidally with external and internai tooth. 



Maxittae (Fig. 55). Hypostome with 8 rows of about 6 teeth each ; before thèse rows 

 about three transverse rows of small teeth ; before thèse again numerous minute teeth. Palps 

 short, of the usual shape. Tibia anteriorly and externally obliquely truncate so that there is 

 an anterior angle. Palp provided with an external row of about 8 curve, thick, transparent 

 bristles, about 6 submarginal ditto, an internai row of five ditto on the fémur and two on 

 the tibia. 



