Dipera.'] SUBANTARCTIC ISLANDS OF NEW ZEALAND. 139 



Coenosia fumipennis, sp. nov. 



Length. — Body, 5| mm. ; wing, 6 mm. 



Head. — Frons brown, with a light-grey mark extending forward from the ocelli, 

 of an elongated-heart shape. Eye-margins grey. Face grey ; jowls light grey. 

 Antennae grey ; arista bare. Palpi and proboscis blackish. 



Thorax yellowish-grey, with light-grey pleurae ; scutellum grey, with a broad 

 darker central line. 



Wings rather narrow and long, suffused with blackish to about the distal third 

 of the wing, which is much blackened ; no costal spine. Squamae, lighter. 



Legs. — Femora grey. Tibiae dusky testaceous. Tarsi black. 



Specimen preserved in spirit. 



Hab. — Monument Harbour, Campbell Island. 



Type. — Cambridge Museum. 



Note. — This species can only be referred with some doubt to the genus Coenosia, 

 as the antennae are shorter than in ordinary species, and the mouth-bristles are 

 far less developed. 



PHYCODROMIDAE. 



This family includes some very interesting forms. One is a large and robust 

 insect with reduced wings, for which a new genus, Paeofterus, is proposed ; there 

 are several examples of this insect in the British Museum collection. Another is 

 devoid of halteres, and has the wings reduced to strips ; for this the new genus 

 Icaridion is proposed. Hutton has described several species of the genus Coelopa, 

 and the Cambridge collection contains specimens from him of his species C. litnralis. 

 The female of this species is very like the European forms, but the male differs con- 

 siderably. It possesses a conspicuous spinal armature on the femora of all the legs, 

 especially on the hind femora, a character foreign to the normal forms ; the rest 

 of the legs bear the usual fur characteristic of the males in Coelopa. In addition, 

 the male has a singular provision of a chaetotaxy on the underside of the first few 

 abdominal segments. The arista of C. litoralis is like that of the normal forms, 

 being practically bare under a high power, and being somewhat chitinous in texture. 

 Among the insects sent were two species of Phycodromids in which the characters 

 were those of the genus Coelopa, but the arista is evidently pubescent and is more 

 hairlike in form ; it recalls to some extent that of certain Borborids. This form of 

 arista is also found in the new genus Icaridion. It also differs from the normal 

 type of arista in Coelopa, inasmuch as the basal joints of the same are more thickened. 

 As this point is not referred to in any of the diagnoses of Mutton's species from the 

 islands, it is proposed to keep the new species in the genus Coelopa lor the present, 

 but it is possible that a more extended knowledge of the genus may necessitate the 

 separation of these forms from the normal ones. 



To this form of Coelopa with pubescent arista belong the two following species. 



Coelopa, Meigen. Syst. Beschr., vi, 8 (1830). 



Several specimens of a small species were sent, but the material was very unsatis- 

 factory, and a full diagnosis is impossible. 



