438 THE PHALANGIA AND PEDIPALPI IN WESTERN SOUTH AMERICA, 



G. multimaculatus, n. sp. 



Dorsum, glossy black, very minutely tuberculate; just posterior to the eye-eminence, 

 with a broad, transverse, bright-yellow band, the posterior portion of which has a central, 

 broadly triangular extension; all the rest of the surface closely dotted over with minute, 

 roundish, whitish spots, which are, also, although fewer, on the inferior surface and coxse. 

 Eye-eminence very broad, with numerous, very minute tubercles. Palpi and maxilla} 1 . 

 Coxa3 and pectus roughly tuberculate. (PI. 24, fig. 10.) 



Remarks. — There is in the collection but a single, very much mutilated specimen of this 

 species. The body is nearly a third of an inch in length. 

 The locality label reads : " Napo and Maravon." 



Genus Ortonia, new genus. 



Eyes, two. Last article of the mandibles reniform, attached laterally by its centre. 

 Tarsal joints of second pair of legs very numerous. (PI. 24, figs. 3 a, 3 b.) 



Remarks. — I have dedicated this genus to Prof. Orton as an acknowledgment of the 

 services rendered by him to Science by his arduous and successful journey in South 

 America. 



0. bilunata, n. sp. 



Cephalothorax reddish -brown, its anterior margin doubly crescentic, with an acute point 

 in the centre, provided with a pair of large sub-elliptical light yellow spots, whose margins, 

 especially the inner, are irregularly waved or crenate, and, anterior to whose centre, in 

 each is a marked puncture or depression ; between the posterior ends of these maculae, is 

 a pair of prominent, long, divergent, slender, but rather obtuse, reddish-brown spines ; gen- 

 eral surface smoothish, with a velvety appearance. Eye-eminence smooth, broad, longi- 

 tudinally grooved in the centre so as to be almost double, with the eyes placed laterally on 

 its most prominent portions. Distal joint of maxilloe reniform, beautifully areolated, 

 smootbish, the antepenultimate joint sub-globose, with rather prominent spinous pro- 

 cesses on it externally. Palpi, with the proximal joint sub-cylindrical, long, and slender ; 

 the next joint broad, slightly triangular in section, its edges roughly crenulate, and the 

 penultimate joint broadly dilated, somewhat triangular, thin, and armed with minute, 

 slender spines on its margins, and a pair of larger ones on its distal end ; the distal 

 article more cylindrical, with one or more acute spines, against which the movable claw 

 works. Ventral surface of the color of the upper, with the abdominal segments distinctly 

 bordered with a light color. Legs reddish-brown, with some small spines or tubercles ; 



