94 Mr. R. M‘Lachlan’s Afonograph of the 
kleinen Endsporen, die mittleren mit grossen Endsporen.” 
Rambur reproduces Dalman’s description, and criticises (with 
justice) Pictet’s assertion, that the terminal joint of the maxillary 
palpi is ovoid, a mistake that may have arisen through some con- 
fusion with the labial palpi. Kolenati,.whose description is the 
most complete, indicates four joints to the maxillary palpi of the 
males, and five to those of the females: the number of spurs, 
0-2-4. Brauer is uncertain as to the number of joints, and indi- 
cates 0-2-4 spurs. Stephens says, “ maxillary palpi 5-jointed,” 
without any distinction of sex, in his characters of the family 
Hydroptilide: in his generic description of Hydroptila, he appears 
to have copied Pictet in saying, that the terminal joint is ovoid; 
with respect to the spurs he says, *‘¢ntermediate and posterior tibize 
furnished with two pairs of long spurs,” in which he is manifestly 
wrong. 
The neuration appears to vary considerably in the number of 
apical forks, but I am not able to say if this variation be specific 
or sexual, or both. I have been unable to detect any transverse 
nervules in the anterior wings, but in a drawing of the neuration 
of a Madeiran species (H. atra) sent to me by Dr. Hagen, he 
indicates the presence of at least two such nervules. Will this 
likewise prove a specific character ? 
With respect to the specific characters founded on the coloration 
of the antenne, I feel convinced that these are, in a great part, 
only sexual; this has, in fact, been proved by Mr. Parfitt, who 
has taken individuals with spotted and with unicolorous antennz 
in copula ; in this case the females had the spotted antenne, and 
this quite accords with my own views, deduced from an exami- 
tion of the species in my collection. 
Finally, I will add, that for the successful examination of Hy- 
droptila two things are necessary ; one, that the observer should 
carefully study the habits and appearances of the insects, in their 
own localities; the other, that a number of individuals of both 
sexes should be placed in alcohol, for it is impossible to discrimi- 
nate the parts of the mouth, &c. in dry specimens, owing to the 
dense hairy clothing. 
1. Hydroptila tinedides, Dalman. (PI. V. fig. 7, neuration.) 
Hydroptila tinedides, Dalm. Analect. Ent. p. 26, tab. 3, fig. 4 
(1823) ; Steph. (*) Ill. p. 152, 1; Kol. Gen. et Spec. Tri- 
chop. pt. 1, p. 105,12; Hag. Ent. Ann. 1859, p. 107, 53; H. 
pulchricornis, Pict. Recherch. p. 224, 1, pl. 20, fig. 10 (1834); 
H. brunneicornis, Steph. (*) Il. p. 152, 2. 
Antennz testaceous, narrowly annulated with fuscous; in the 
