602 Capt. T. Broun on new 



A. First veutral ray about as long as its distance 



from the posterior extremity of the folded 

 an a] , reaching or nearly reaching anal opening. 

 a. Barbel half length of head. 

 Eye equally distant from posterior nostril and 

 upper border of gill-opening, or a little nearer 

 the former ; outer pectoral raj' not reaching 



beyond middle of outer ventral ray 1. jn-eyiadilla, C. & V. 



Eye nearer upper border of gill-opening than 

 posterior nostril ; outer pectoral ray reaching 



nearly extremity of outer veutral ray 2, hnfjijilis, Stdr. 



h. Barbel ^ or \ length of head ; eye nearer 

 upper border of gill-opening than poste- 

 rior nostril 3, sabalo, C. & V. 



B. First veutral ray as long as or a little longer 



than its distance from origin of anal, not 



reaching anal opening. 

 a. No trace of adipose dorsal fin. 

 Prsemaxillary teeth nearly all bicuspid ; barbel 



I length of head, which is 4^ to 5 times in 



total length 4. JJ'hi/jnjjen', Blgr. 



Outer prse maxillary teeth unicuspid ; barbel | to 



-j- length of head, -which is 3§ to 4 times in 



total length 5. orientalis, Blgr. 



h. An elongate, low, adipose dorsal tin. 



Barbel | length of head ; no nasal barbel 6. TaczanowsJcii, Blgr. 



Barbel -| length of head ; no nasal barbel 7. penianus, Stdr. 



Barbel § to f length of head; nasal flap pro- 

 duced into a short barbel 8. Festcc, Blgr. 



LXXXir. — Descriptions of ncio Genera and Species of New 

 Zealand Cohoptera. Bj Capt. T. Broun, F.E.IS. 



[Continued from p. 458.] 



Group Feroniidae. 

 Trichosternus Walkeri, sp. n. 



Glossy, bronzed black, tlie margins of elytra and base of 

 thorax viridescent ; tarsi and palpi rufo-piceous, the tips of 

 the latter paler. 



Head broad, smooth, frontal impressions shallow. Ei/es 

 prominent. Thorax 3 lines broad, 2^ long ; apex subtrun- 

 cate, the sides moderately rounded and sinuously narrowed 

 behind, posterior angles exactly rectangular ; the dorsal groove 

 does not reach the front, basal fossee large. Scutellum striate 

 at base. Elytra ovate-oblong, humeral angles dentiform, 

 apical sinuosities well marked ; they are striate, the punctua- 

 tion of the stria: is fine but distinct, the interstices arc most 



