OF NEW ZEALAND. 1039 



Head nearly as large as thorax, trigonal, moderately punctured, 

 minutely longitudinally rugose near the eyes, nearly smooth in 

 front ; posterior fovese small, frontal impressions ohlong. Antenna 

 slender, not short, the last six joints fuscous, the others more or less 

 testaceous ; second joint barely half the bulk of the first, third 

 slightly longer than second, slender at base ; joints 4-6 almost moni- 

 liform, fourth very small, more slender than fifth ; 6-11 broader 

 than the preceding ones, ninth and tentli quite transverse. Tliorax 

 rather broader than long, strongly rounded laterally, narrowed, but 

 nearly straight, behmd the middle ; posterior angles rectangulai", the 

 front ones depressed ; the punctuation regularly distributed, dis- 

 coidal impressions broad but not deep, with a few fine grey hairs. 

 Scutellum smooth. Elytra longer than broad, parallel, truncate 

 behind ; somewhat broadly but not deeply impressed lengthways 

 behind the base, moderately closely and regularly punctured, almost 

 in rows ; they bear slender but not very short greyish hairs. Hind- 

 body about equal to elytra in size, with rather longer pubescence, 

 sculpture fine. Tibice with fine pallid seta3. Underside castaneous, 

 finely sculptured and clothed ; basal ventral segment with an ex ■ 

 tremely narrow carina, the fifth pallid and apparently membranous 

 behind, appearing as if it were widely incurved behind, it is sn:cother 

 than the others. 



Length, |- ; breadth, quite ^ line. 



Whangarata, near Tuakau. Three examples, not agreeing ex- 

 actly, one having dark concolorous antennae. 



1859. O. debile, "-s. Narroic, elongate, depressed, shining ; 

 clothed with small, inconspicuous, greyish hairs ; almost wholly 

 blackish, legs fusco-testaceous, five basal joints of antennee nearly 

 similar to the legs as regards colour. 



AntenncB short; third, fourth, and fifth joints small, third rather 

 longer than fourth; joints 6-10 transverse. 



Very much like 0. monilifer ; antennae very much shorter ; body 

 narrower, flatter ; the pubescence less easily seen ; basal dorsal 

 segment densely fringed with minute grey hairs, and, like that 

 species, with a small spot on the second segment formed of minute 

 grey hairs or scales. 



Underside closely sculptured, less shining than 0. monilifer, 

 abdominal segments simple. 



Length, |-; breadth, \ line. 



Mount Egmont. Three individuals, probably all females. 



1860. O. prolixum, n.s. Narroiv, very elongate, shining, 

 chestnut-red, legs fulvous, tarsi yellow ; pubescence fine, greyish- 

 yellow. 



Head finely but distinctly punctate, frontal impressions well 

 marked, the occipital small and round ; eyes rather prominent. 

 Antenna rather slender, second joint about half the length of the 

 first ; third obconical, but little longer than broad ; fourth and fifth 

 small, bead-like : 6-10 more or less transverse ; eleventh not 



o — PT. V. 



