190 Transactions. — Zoology. 



men I received was from Dr. C. A. Dohrn, and I believe it 

 came from the North Island." 



Trochobola venusta. 



T. venusta, Osten-Sacken, Berlin, ent. Zeitschr., xxxiv., p. 265 

 (1894). 



"Body brownish ; the usual thoracic stripes brown, coales- 

 cent, leaving only a paler space in the humeral region ; an- 

 tennae brownish-yellow, scapus brown ; halteres with a brown 

 knob. Femora brownish-yellow, with a brown ring before tbe 

 tip ; tibiae and tarsi yellowish-brown. Wings : The ocellar 

 spots which distinguish the other Trochobola exist here too, 

 but are rendered less distinct by the numerous brown irregular 

 spots which fill their intervals. The basal portion of the 

 wing is densely filled with little brown spots, assuming a 

 more or less irregularly ocellar shape, with still smaller brown 

 spots in their centre; the very distinct cross-vein between the 

 sixth and seventh longitudinal veins is clouded with brown ; 

 in the middle of the wing a kind of cross-band is formed by 

 larger and darker brown spots, one on the anterior margin, 

 surrounding the origin of the prefurca, the other on the pos- 

 terior margin, near the end of the sixth vein ; the space be- 

 tween the larger spots is filled with irregular smaller ones ; 

 upon this dark cross-band follows a subhyaline one, within 

 which the brown spots are more scarce ; the distal third of 

 the wing is darker again, containing three large brown spots 

 mottled with paler dots, and leaving an irregular, subtri- 

 angular, subhyaline space between them. Length, 9 mm. ; 

 wing, 11 mm." 



Hab. Grey mouth (Helms). 



" Easily recognisable by the colouration of the wings." It 

 is evidently related to my T. picta, but I think that it is a dis- 

 tinct species, especially as no mention is made of the irregu- 

 larly shaped discal cell which distinguishes T. picta. Baron 

 Osten-Sacken speaks of the wings in both these species as 

 being ocellated, while in my paper I say that they are not 

 ocellated. The explanation of the difference is that I con- 

 fine the term " ocellated " to a distinct dark ring with a 

 spot in the centre, while Osten-Sacken gives it a wider mean- 

 ing. In the figure of the wing of T. picta * I do not recognise 

 my own drawing. 



Limnophila skusei, sp. nov. 



Pale yellowish-brown. Proboscis dark-brown ; each joint 

 of the antennae dark-brown near its base. A fuscous stripe on 

 each side of the abdomen. Femora rather darker than the 



* Trans. N.Z. Inst., xxxii., pi. iii., fig. 2a. 



