130 Mr, \V. C. Crawley on Ants front 



38. Batrnchouhn heninensis, sp. n. 



Deptli of body about G in leiip;th, length of bead about 3. 

 Diameter of eye 10 to 12 in lon^th of head. A iiorizontal 

 fold of skin from below eye to puvoperculnni. Two opercular 

 and two sul)opeicular .s[)ines. Teeth on vomer and palatines 

 uniserial, obtusely conical ; 11 to 13 on vomer; lower jaw 

 with a series of similar teeth and anteriorly a ])atch of villi- 

 form teeth ; prgemaxillaries with a narrow band of villiform 

 eeth. Head naked, covered with small filiform papillse ; no 

 scales on oceiput or on throat ; snout and lower jaw with 

 fringes. Body scaly, the scales comparatively large, 10 

 between origin of second dorsal and lateral line. Dorsal 

 III, 25. Anal 22-23. Pectoral 10-20, extending to origin 

 of anal; no axillary foramen or pores. Greyish; iiead 

 ornamented with irregular transverse dark bands with darker 

 edges ; body with irregular dark cross-bars and spots ; dorsal 

 arid anal fins with oblique stripes; pectoral with series of 

 S] ots ; caudal dark at the base and also posteriorly. 



Three specimens, 160 to 210 mm. in total lenutli. 



Kelated to B. surinantensis, Schneid., of the Atlantic coast 

 of America, differing especially in the completely naked head, 

 the larger scales, and the fewer dorsal and anal rays. 



VI. — Ants from Xorth and Central Australin, coVected 

 by G. F. /ii7/.— Part I. By W. C. Ckawley, B.A. 



I. Subfam. PoNEMiN^. 

 No. 2. OdontomacJius rvficeps, Sm., subsp. acutidens, Forel. 

 Darwin, N.T,, 15. iv. 13. ^ . 



No. 21. OdontomacJius septentrionalis, sp. n, 



^ . — L. 14r'8 mm. (with mandibles). 



Mandibles long (2 mm.), dentate all along their inner 

 margin ; apical tootli long, rounded at point, subapical very 

 small and pointed, |)reapical nearly as lung as apical, broad 

 and truncated. Head 3"5 mm. long, maximum breadth 

 2'5 mm., minimum (at back) 1*8 mm. Frontal area distinct ; 

 clypeus long, prolonged to a point between the frontal carinae, 

 anterior border truncate. Head much narrower behind and 

 deeply emarginate. Node of pedicel very high, merging 



