102 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Cohoptera. 



neath above the middle and curvedly dilated lower down, straight externally, with 

 2 or 3 spiniforra setae at the extremity, clothed like the tarsi with slender bright- 

 yellow setae ; intermediate tibiae curvate, the posterior straight, bispinose at apex. 

 Anterior tarsi with basal 3 joints dilated; 1st largest, suboblong, and notched at 

 apex ; 2nd and 3rd transverse, emarginate at apex, the former the larger ; 4th small, 

 half the width of the preceding one ; terminal slender, not as long as the preceding 

 ones conjointly ; claws simple. The intermediate tarsi elongate, basal 4 joints 

 only moderately expanded ; the 5 joints of the posterior of nearly equal thickness, 

 none dilated. 



Female. — Tibiae simple, bispinose at apex, the middle pair only slightly curved ; 

 tarsi not dilated; antennae nearly similar, 9th and 10th joints smaller, 11th acu- 

 minate. 



J . Length, 2 lines ; breadth, | line. 



Auckland Islands. 



Both sexes found within the head of a kingfisher (Mr. Hudson). 



Somewhat similar to the European C. morio, but with a narrower hind-body, 

 and diifering in colour and sculpture, but more especially in the peculiar excision 

 of the anterior tibiae ; this last character I have not observed amongst our New 

 Zealand species, so it seems to be quite distinctive. The specific description is com- 

 plete ; there cannot, consequently, be any difficulty in identifying the insect. 



Group BYRRHIDAE. 



MoRYCHUs. Erichson. 



The organs of the mouth, save the mandibles, labrum, and a part of the eyes, 

 concealed during the retraction of the head. Ligula short, horny in the centre, 

 coriaceous externally, scarcely emarginate in front. Last joint of the labial palpi 

 subglobular, trimcate at the end ; that of the maxillary oval. Mandibles very 

 short, without membranous margin and basal tooth. Lahrum transversely quad- 

 rate, rounded anteriorly, strongly carinated at its base. Antennae gradually in- 

 crassated. Legs similar to those of Cytulus. 



Morychus tumidellus, sp. nov. 



Compact, oblong-oval, convex, sparingly clothed with slender decumbent in- 

 conspicuous greyish hairs ; dark shining bronze, slightly tinged with green ; legs 

 and basal joint of antennae dark red, remaining joints and the tarsi rufo-testaceous. 



Head rather finely but not closely punctured, with fewer punctures near the 

 middle. Thorax transverse, gradually narrowed anteriorly, its posterior angles 

 more acutely prominent than the anterior ; its surface finely, distinctly, and rather 

 more closely punctured than the head. Scutellum triangular, nearly smooth. Elytra 

 not strongly curvate at the sides, only moderately narrowed backwards, and rather 

 broadly rounded behind, the upper posterior slope rather gradual ; near the apex 

 of each elytron there are 2 shallow impressions, the interval between these when 

 viewed from above appears somewhat swollen but hardly nodose ; their sculpture 

 perceptibly finer and closer than that of the thorax ; the intervals between the punc- 

 tures are not sculptured or coriaceous ; this last remark is applicable to the head 

 and thorax as well. Tibiae nearly glabrous, minutely fringed along the inner 



