whf.klkh: thk ants of hohnk.o. 127 



•20Sa. I'ol.Mill \( lll> (.MvKMolllHINAX • iiii:i\\\ I{i.L'<r \;ir. 

 JAVANK A Mayr 



Poiyrhachia thrinas var. jamuica Mayr, Tijd.schr. out., l,S(i7, 10, p. 20, Q . 



Tyitf-iocality: Java (Mus. Holm.). 



Three workers from Kuching (John Hewitt). 



209. PoLYUiiAciii.s (MvK.MoTiiRiNAX) AEQiicu.si'is, nom. nov. 



Pohjrhachis constructor Smith, Cat. Hymonop. Brit, nivu^., lSo8, 6, p. 68, 9. 

 pi. 4, fig. 23 {nee P. cotistmdor Smith, Journ. Vruc. Linn. soc. Ltjndon. 

 Zool., 1857, 2, p. 60). 



Type-locality: Sarawak, Borneo (Saunders Coll.). 



It seems not to have been noticed tiiat Smith gave the name con- 

 stridctor to two very different species of Pol>rhacius. In 18o7 he 

 described a P. constructor from a female specimen taken by A. R. 

 Wallace at Sarawak. This specimen measured 3| lines and had the 

 petiole "quadrate, with two very stout, short, curved spines above" 

 and the body covered with "short, silky, ashy pile, most apparent 

 on the abdomen." In 185S he gave the same name to a female from 

 the same locality but from the W. \V. Saunders Collection, measuring 

 4^ lines, with the " node of the petiole incrassate and with three stout, 

 short, acute spines." The figure accompanying this description 

 shows that he had before him a species of Myrmothrinax, with sul)- 

 equal petiolar spines, possibly the form afterwards called thrinax var. 

 jaranica by Ma^T. It therefore becomes necessary to change the 

 name of the second constructor. The first will have to be consigned 

 to the species of Polvrhachis inccrtac sedis for the present {vide injra 

 p. 137). 



*210. PoLYRELvcHis (Myrmothrixax) triaexa, sp. nov. 



TT'or^'cr. Length 6.5-7 mm. 



Head a little longer than broad, a little broader behind than in front, with 

 evenly rounded and convex occipital border and straight sides; very convex 

 dorsally in the frontal region. Eyes large and convex, broadly elliptical, 

 their anterior orbits at the median transverse diameter of the head. Mandi- 

 bles ver>' convex, with five large, subequal teeth. Ch-p>eus carinate, broader 



