1150 COLEOPTERA 



little less than its length ; the other enlarged joints progressively 

 diminish in width, the terminal joint being very slender and elongate. 

 The pyofJiorax is not quite so long as broad, slightly broader in front 

 than at the base, the surface excessively finely sculptured, without 

 elevations, and w'ith only a slight simulation of conical elevation of 

 the disc. Elijtra with quite regular, close stricB, which are distinctly 

 punctate. 



Though Broun has described numerous species of Xcnogonus, I 

 cannot make this accord with any of his descriptions. 



Bealey. Helms ; four examples. 



Obs. — Dr. Sharp redescribes the genus under the name Perplectus, 

 Xenocera havmg been used before. I myself, however, altered the 

 name to Xcnogonus in May, 1882 (vol. i., p. 128, N. Z . Jouvn. of 

 Science), so that his species must bear tlie name Xenogonus ob- 

 scurus. — T. B. 



Group— OPATRID^. 



Syrphetodes. 



2039. S. bullatus, n-s. {Shaij}; Trans. Boy. Dab. Soc, 1886, 

 p. 107.) i''?^sc/^5■, indumento ochraceo-brunneo vestitus ; jjroi^/iorace 

 angulis anterioribus per-productis, margine anteriore medio tuber- 

 culato-emarginato ; ehjtns convexis dorso tuberculis quatuor grossis 

 instructis. 



Long., 9nun. 



Anteniice hlsickish. Thorax with the anterior angles very long, 

 very acute, widely separated from the eyes ; the sides bisinuate ; 

 the hind angles free, rectangular, very sharply defined. Elytra 

 nearly twice as broad at the base as the base of the thorax, just 

 behind the shoulder with a sharp tubercle directed outwards, causing 

 the shoulders to look hamate; the disc provided with four very 

 large elevations, and a pair of smaller acute tubercles between them 

 and the base ; the sides but little explanate ; the lateral outline 

 undulate near the outer margin, with seven or eight fovea3 ; tibia 

 and tarsi blackish, the former spotted with pallid scales. 



Greymouth. I received my example of this remarkable insect 

 from Mr. Helms some years ago ; it was the first example of the 

 genus I had seen, and I thought it might be S. marginatus, Pascoe. 

 Mr. Helms has, however, found recently a small series of a species 

 at Picton which agrees much better with Pascoe's figure, and I 

 have no doubt the Greymouth insect is new. 



2040. S. Sylvius, ''•*• Ojjag^c, nigro-fuscous; tarsi, palpi, and 

 antenna) obscure-rufous ; covered with small ash-coloured and fer- 

 ruginous scales, the more brightly coloured scales predominate on 

 the more elevated parts. 



Head convex behind ; eyes prominent, transversely oviform. 

 Antennce pubescent towards extremity, basal articulations with 

 yellow setffi, fourth joint twice the length of the second. Thorax 

 uneven, obtusely raised behind the middle ; anterior angles very 



