WITH DESCRIPTIONS OF NEW SPECIES, &C. 37 



taken by him at Hastings. S. flavomaculata of Pictet is 

 a Polycentropus. 



Tinodes jmsillus, Curtis, Phil. Mag. 1834, p. 216 (not de- 

 scribed). Antennae brown, anniilated with ochreous ; head, 

 thorax and basal joint of antennas thickly clothed with silky 

 pale ochreous pubescence ; abdomen fuscous, terminal segment 

 paler ; legs entirely pale ochreous ; anterior wings somewhat 

 iridescent, thickly clothed with greyish-ochreous pubescence, 

 cilife greyish-ochreous ; posterior wings iridescent, ciliae 

 greyish-ochreous. The anal appendages are complicated, 

 and require a very high magnifying power for their discrimi- 

 nation. As I understand them the following appears to be a 

 correct definition. In the middle of the upper surface of the 

 last segment is a tongue-shaped prolongation, which is much 

 dilated at the extremity, concealing all but the points of the 

 app. intermed. ; the app, sup. are two long hairy lobes ; the 

 terminal joint of the app. infer, appears to be long and 

 acutely pointed, much longer than the basal joint. Exp. alar. 

 5 J lin. 



This small Tinodes is not included in the Synopsis. Curtis 

 has not described it, but gives a reference to Fabricius. What 

 pusilla of that author really was is extremely problematical. 

 There are several specimens in Curtis's collection, but I know 

 nothing of their locality. Mine were taken in Devonshire, 

 in September. 



The species of the genus Hydropsyche remain in a most 

 uncertain condition. 



Another season I hope to be able to pay more attention to 

 the families of Netiroptera generally, and shall be glad of 

 any assistance in this order. 



R. M'Lachlan, 

 1, Park Road Terrace, Forest Hill, S. E. 

 Qili November, 1861. 



