472 Mr. D. Sharp 07i the Elateridae of New Zealand. 



33. Cryptohypnus thoracicus^ n. sp. 



C. latior, minus depressus, niger, tenuiter pubescens, tibiis tarsisque 

 testaceis ; tlioracelatiusculo,latitudinehaud minore quam longitudo 

 lateribus ante basin sat constrictis, angulis posterioribus tenuibus, 

 sat divergentibus, crebre evidenter pnnctato, sat distincte canalicu- 

 late; elytris sat profunde striatis, interstitiis crebre punctatis. 

 Long. 8| m. m. 



A single individual lias been sent me by Mr. Wakefield ; it 

 was found at Kelly's Creek by Mrs. Foster. 



Group 10.— These five species (Nos. 29, 30, 31, 32, and 33) 

 appear to be very closely allied structurally to the northern 

 Cryjptoliypnus depressus and hyperhoreus. The following 

 structural characters will enable them to be readily identified : — 

 Forehead curved in front, the clypeus in the middle nearly or 

 entirely wanting, so that, though the forehead presents a 

 sharply defined edge in front, the labrum is placed imme- 

 diately beneath it ; antennal spaces distinct, but much con- 

 cealed by the horizontal edge of the forehead, and widely 

 distant from one another in the middle ; antenna filiform. 

 Prosternal process rather long and straight. Mesosternal 

 cavity rather broad, formed by broad but not in the least 

 raised edges, reaching back to the intercoxal suture. Tro- 

 chanteral portion of coxal plate well developed, but the femoral 

 portion nearly completely absent. Tarsi moderately long, 

 with all the five joints well developed and simple. 



34. Chrosis polita, n. sp. 



C elongata, angusta, nitida, nigra, parcissime pubescens, pedibus 

 piceis ; tborace pernitido, elongate, quam latiore multo lougiore, 

 parce punctato ; elytris profunde striatis, striis fortiter punctatis, 

 interstitiis fere loevis, apicibus baud prolongatis, subrotundatis ; 

 prosterni lateribus dense punctatis ; lamina cosali angusta, mar- 

 gine interne nuUo modo sinuate ; tarsis elengatis, gracilibus, 

 subtiis band dense pubescentibus. Long. 124 m. m. 



The very narrow, parallel form, the very highly polished 

 prothorax, excessively scanty pubescence, and the almost 

 impunctate interstices of the elytra very readily distinguish 

 this species from its allies, even without any examination ot 

 structural characters. 



Tairua, but very rare ; one individual found by Captain 

 Broun under a log near Pipi Creek, and three others under 

 bark in the same locality. 



Ohs. The two specimens sent me by Captain Broun are, I 



