282 PROCEEDINGS OF THE ACADEMY OF [Vol. LXXIV 



distad. Limbs ochraceous-buff, the caudal femora washed laterad 

 with ochraceous-tawny, with a median line of chestnut brown in 

 proximal portion. Cephalic femora with a broad pre-genicular 

 suffusion of chestnut brown, all ventral femoral margins and spines 

 blackish brown. Cephalic tibiae with a short annulus of blackish 

 brown proximad and a similar suffusion distad, median and caudal 

 tibiae with similar proximal annuli. Spines of caudal tibiae black- 

 ish brown with heavy flecks of the same at their bases. 



Length of body 33 (somewhat extended), least width of vertex 

 1.1, length of pronotum 6.3, length of tegmen 29, median width of 

 tegmen 11, length of cephalic femur 13.7, length of caudal femur 

 23.3, length of longest cephalic tibial spine 4.1, length of ovipositor 

 17.7 mm. 



The type of this handsomely marked species is unique. 



Gryllacris macroxiphus new species. Plate XXII, figure 7. 



We have been unable to find any closely related species among 

 the numerous descriptions of Melanesian and Malayan forms of 

 the genus. Nearest agreement is apparently with the Australian 

 G. straminea Brunner, the present insect differing in the dark 

 pronotum, uniformly pale limbs and somewhat larger size. The 

 male differs further from the described male of that insect in having 

 the subgenital plate truncate, not produced. 



Type: d* ; Obi Island, Moluccas. [Hebard Collection, Type 



no. 849.] 



Size and form medium for the genus. Fastigium of vertex very 

 narrow, slightly over one half width of proximal antennal joint, 

 surface cephalad concave between the carinate lateral margins, 

 ventrad forming with facial fastigium a transverse suture. Face 

 shining, moderately impresso-punctulate and rugulose. Pronotum 

 with cephalic margin of disk very weakly convex, cephalic sulcus 

 very broad and weak, becoming subobsolete dorsad, longitudinal 

 sulcus represented by a fine impressed line meso-caudad, caudal 

 sulci weak, lateral lobes with V-sulcus broad and not very deep; 

 lateral lobes decidedly longer than deep, ventral margin nearly 

 straight, showing faint concavity meso-cephalad, ventro-cephalic 

 angle broadly rounded, ventro-caudal angle rounded and broadly 

 subtruncate, humeral sinus broadly and very weakly concave. 

 Tegmina and wings fully developed, very elongate, extending far 

 beyond apex of abdomen. Tegmina comparatively narrow, 

 rounded distad. Ultimate tergite rounding evenly ventrad, meso- 

 ventrad with a minute, broadly W-shaped area, this laterad with 

 margins carinulate, mesad impressed, its surface somewhat concave; 

 below this area the tergite is armed with two very small teeth, 

 curving dorso-mesad, with apices nearly attingent. Cerci elongate 

 and very slender, between which are flattened plates (the armament 

 of which can not be seen in the single male before us). Subgenital 



