524 ME. GUY A. K. MAESHALL ON COLEOPTEEA 



of and the other just behind the middle ; interval 5 with two similar large tubercles, 

 one near the base, the other at the middle ; interval 7 with two large tubercles on a 

 level with those on interval 3, and a smaller one behind ; stria 8 deeply impressed 

 throughout, stria 9 impressed in the basal third only ; interval 1 with a slight shiny 

 crenulated elevation for a short distance before the middle ; the whole upper surface 

 with very faint sparse punctures, each bearing a minute depressed dark seta. Legs long 

 and slender, the posterior femora considerably exceeding the apex of the elytra ; the 

 femora coarsely punctate and with short golden-brown setas, which are much denser 

 and longer on the under surface ; the tibite punctate in irregular rows, the intervals 

 between them subcarinate, the external edge impunctate and shiny. Venter shiny and 

 very sparsely punctate, the sides and the whole of the last segment opaque and con- 

 fluently punctate ; segment 1 with the intercoxal process rounded in front and with a 

 deep fovea in the middle of the margin, the central portion of the segment elevated 

 and bearing two large tubercles, the sides of which are vertical and smooth internally, 

 the outer sides being sloping, coarsely punctate and setose ; segments 2, .3, and 4 of 

 equal length ; segment 5 with a patch of golden-brown setse on each side. 



Length 14, width (excluding tubercles) 8-|- mm. 



Utakwa River ; Id. {Type of the species.) 



Described from a single specimen. 



This distinct species differs from the three previously known species, E. tuberosa 

 Fst. (Ann. Mus. Civ. Genova,xxii. 1899,p.60, andDeutsch. Ent. Zeit. 1914, p. 309, fig.), 

 E. gibbosa Heller (Abh. Zool. Mus. Dresden, xii. no. 1, 1908, p. 17), and E. permutata 

 Heller (Deutsch. Ent. Zeit. 1914, p. 308, fig.) in the length of the posterior femora, the 

 remarkable structure of the 1st ventral segment, the shortness of the 2nd segment, and 

 in the number and arrangement of the elytral tubercles. 



LoPHOCHEiRUS, gen. nov. 



This genus is erected for the reception of several New Guinea species which have 

 been erroneously attributed to Odosijllis Pasc. The following are the essential 

 characters which distinguish the two genera : — 



Odosyllis. — The pectoral canal terminating in front of the median coxae, the sides of 

 the terminal cavity simply vertical externally; the intercoxal piece of the first ventral 

 segment with the sides subparallel and the base broadly rounded ; the front tibia 

 very strongly compressed, markedly broader than the others, the external margin 

 narrowly carinate, the two sides shallowly sulcate, the inner margin not sinuate at the 

 base; antennal club with the segmental sutures transverse. 



LoPHOCHEiRUS. — The pectoral canal continued well between the median coxs, the 

 sides of the terminal cavity more or less produced externally ; the intercoxal piece of 

 the first ventral segment with its sides convergent and the base acutely angulated ; 



