150 COLEOPTERA 



The terminal joint of the palpi is securiform, not greatly dilated, 

 however, nor produced to a point as in the preceding species. 



This species is rather larger than the preceding and following 

 species, narrower and more convex than the former, and is evidently 

 intermediate in form between these two. The colour is not constant ; 

 the head and thorax are sometimes reddish, and I possess one indivi- 

 dual which is entirely pale-castaneous. 



Length, if lines. 



I found the present species at Whangarei Heads only. 



272. C. COnvexuS, Sharp ; Ent. Mon. Mag., June, 1876. Cas- 

 taneiis, nitidus, parcius aureo-pubescens ; thorace punctis basalibus 

 7 ; elytris stria suturali, punctisque humeralibus. 



Long. Corp., 2f mm. 



Mas. Tarsis anterioribus articulis duobus leviter dilatatis ; abdomine 

 segmento 5° ventricali fortiter emarginato-reflexo. 



Antemm similarly formed to those of C. thoradcits, but rather less 

 elongate. Thorax greatly narrower than the elytra, transversely convex, 

 as well as depressed in front, the sides sinuate and contracted behind 

 the middle, the hind angles rectangular but not well defined, it bears an 

 irregular bright yellow pubescence, and is impunctate, except for a 

 series of large punctures, about seven in number, along the base. 

 Elytra of a shining chestnut colour, with a similar pubescence to that of 

 the thorax, with a well marked sutural stria, and impunctate, except for 

 some coarse punctures at the shoulders. In the ina/e the basal joints of 

 the front and middle tarsi are distinctly dilated, and the apical ventral 

 segment is very broadly emarginate, the margins of the cut-away part 

 much elevated. 



We are indebted to Mr. Lawson for this species. 



Obs. — This insect has quite the facies of a Eumicrus (in the Scyd- 

 mcznidce), and I had formerly referred it to that family; but the front 

 coxal cavities, which are closed behind in the same manner as in 

 Catops, indicate that it cannot be classed with the Scydmcenidce. It is a 

 remarkable fact that two insects, so distinct from other known forms, 

 and so closely related inter se, as this species and C. thorada/s appear 

 to be, should yet be so dissimilar in appearance from one another. 



Note. — The thorax is usually of a chestnut colour, but the elytra 

 are almost always yellowish. I found this species at Auckland, Tairua, 

 and Whangarei Heads, but it is rather rare. 



273. C. COncinnuS, n.s. Oviform, broad, convex, compact, of a 

 shining rufous colour, and clothed with yellowish hairs. Antennce stout, 

 not so long as the body, ferruginous, apical joint testaceous ; joints one 

 to three stout, the first two of almost equal length, the third shorter than 

 first or second ; fourth and sixth of about the same size, both rather 

 small ; fifth and seventh of the same size, rather large ; eighth distinctly 

 smaller than the seventh and apical joints, which are of the normal 

 form. 



Head small, deflexed. Thorax large, quite half as large as the 

 elytra, convex, depressed considerably in front ; the base sub-truncate ; 



