OF NEW ZEALAND. 617 



longitudine latius, cylindricus, lateraliter in medio spina parva armatus. 

 Scutellum parvum. semi-rotundatum. Elytra cylindrica, humeris rectan- 

 gulis, prominentibus, thorace multo latiora, latitudine vix duplo longiora, 

 apice parum singulatim emarginata. Pedes breves, validi. Acetabula 

 antica extus angulata. 



1085. T. dorsaliS, Redten. ; Voy. Nov., Zool. Niger, tomento 

 cinereo dense obtectus, elytris basi granulatis plaga communi, oblonga, 

 atro-holosericea, antice et ante apicem albo-maculata. 



Long., 12x4! l m - 



FAMILY PHYTOPHAGA. 



Head moderate, rounded, rarely oblong and produced in the form 

 of an obtuse muzzle, free, or more or less immersed in the prothorax. 

 Epistome distinct, or otherwise. Labrum always perceptible, transversal. 

 Mandibles ordinarily robust, short, dentate, seldom simple. Maxilla 

 not much developed, terminated by two lobes ; the inner simple ; the 

 external slender, frequently bi-articulate and palpiform ; their feelers 

 four-jointed, and, in general, filiform. Under-lip without apparent under- 

 mentum, often transversal and very short ; with a tongue composed of 

 many pieces, often small, sub-quadrangular, entire, and coriaceous, 

 seldom much developed, membraneous and bilobed ; with tri-articulate 

 labial palpi. Eyes small, finely granulated, frequently sinuated or 

 emarginated at their inner margin. Antenna inserted at the front and 

 inner margins of the eyes among the majority, on the forehead, or even 

 on the vertex in some groups ; widely separated at the base, or more or 

 less convergent ; sometimes filiform, sometimes slightly and gradually 

 incrassated towards their extremity ; rarely as long as the body ; 

 consisting of eleven joints, with a twelfth joint or appendage in a large 

 number, others having a less number, with ten, nine, eight, and even 

 four. Pronotum variable. Elytra greatly developed and completely 

 covering the hind-body, very rarely abbreviated and exposing a portion 

 of the abdomen. Prosternum and mesosternum very variable in form. 

 Abdomen underneath with five arcs or segments. Legs moderate or 

 small, concealed under the body, seldom much developed and exposed ; 

 posterior femora often incrassated ; tibia simple, not dentate externally ; 

 tarsi sub-pentamerous, the three basal joints broad, furnished below 

 with close hairs forming brush-like soles ; claw joint appendiculate at its 

 base ; claws of variable structure. 



Group CRYPTOCEPHALIDJE. 



Head, in general, moderate, more or less immersed in the prothorax, 

 occasionally beyond the eyes and invisible from above, sometimes as 

 far as the hind margin of these organs only; the mouth directed 

 perpendicularly downwards, or even inflexed; the forehead plane or 

 very slightly convex, of almost circular form. Epistome usually 

 confounded with the forehead, its front margin truncated or slightly 



F iv 



