Mr. D. Sharp on the Elateridse of New Zealand, 399 



1. TJioramus Wakefieldi^ n. sp. 



T. niger, sat nitidus, breviter et sequaliter fusco pubescens ; pro- 

 thorace crebre punctato, angulis posterioribus baud divergentibus ; 

 elytris subtiliter striatis, interstitiis aequalibus, subtiliter puBcta- 

 tis, apice subrotundatis ; antennis articulis secundo et tertio 

 brevibus, sed hoc quam illo paulo longiore ; sutura intercoxali 

 profunda. Long. 21|-29 m. m. 



This species is characterized by its comparatively large size, 

 uniform and even pubescence and punctuation, by the short 

 but yet not extremely abbreviated 3rd joint of the antenna, 

 and by the front anterior angle of each of joints 4-10 of the 

 antennae being acute but not prolonged. 



Oxford, Feb. 1873 ; Dry bush ; Christchurch ; Hokitika ; 

 Rangiora ; Akaroa, Dec. 19, 1874. The species varies consi- 

 derably in size ; one small specimen is marked in Mr. Wake- 

 field's collection as found on a hill-top at Akaroa by Mr. 

 Fereday. The species also occurs in the Northern Island, as 

 some portions of a specimen have been received by Mr. Law- 

 son from his brother at Auckland. 



Mr. Wakefield has brought back, in spirit, specimens of 

 the larvEe and pupge of this species; these I describe below : — 



Larva 38 m. m. long., 8 m. m. lat. (on 9th and lOtli seg- 

 ments), of thirteen segments, including the head ; of these the 

 head is fuscous or pitchy, and the two following segments 

 are more or less infuscate, the other segments whitish ; the 

 2nd segment as large as the 3rd and 4th together, the 8th to 

 10th segments are the broadest. Front of head deeply emar- 

 ginate in the middle, the emargination furnished in front with 

 a band of cilia, and in the middle with a horny prominence, 

 terminating in three short teeth, one of which is placed above 

 the other two. Antennas three-jointed *, and with a mem- 

 branous probably retractile support, the apical joint very 

 slender. Mandibles rather longj acuminate, simple ; upper 

 surface of head with coarse but not very numerous punctures. 

 Maxilla elongate, and furnished at the apex with a four- 

 jointed palpus ; labial palpi two-jointed. Dorsal segments, 

 especially 4-8, more or less punctured, the punctures bearing 

 short hairs. The 13th dorsal segment small, furnished to- 

 wards the apex with rough, coarse, hard, brown tubercles, 

 each of which bears several hairs ; the apex is prominent on 

 each side, the prominence being surmounted by a robust 

 double tubercle ; thirteenth ventral segment swollen at its 



* The antennae of the Elaterid larvae are described by Perris and 

 Lacordaire as 4-jointed ; but it seems to me that the supposed basal joint 

 is merely a membranous projection or support, and shows no trace of an 

 articulation at its base. 



