66 
MESOTHEN. By Dr. M. Drattdt. 
The hyaline wings with black veins, margins and apical spot are at the base and in the subcostal space orange. 
Expanse of wings: 32 mm. South East Peru. 
petosiris. M. petosiris Druce (12 i) from Colombia, Ecuador and Bolivia has an orange-yellow body; collar and 
shoulder-covers are margined with black; the abdomen shows black and blue spots being united to transverse 
bands from the 3 rd ring, the last segments are quite black and metallic blue. The hyaline wings exhibit orange- 
yellow stripes at the costal and inner margins which are black like the distal margins and the apical spot. — 
erubescens. In erubescens form. nov. (= ab. 1 Hmps.) the colour of the body is orange-red. 
ignca. M. ignea Druce (12 i) has a black head, otherwise the body is orange-red; on the mesothorax two, 
on the metathorax one black spot. The dorsum shows a series of black spots growing smaller posteriorly; the 
last segment is black; laterally and underneath on the last segments black spots; legs black-brown. The hyaline 
wings have an orange-red base, black margins and apical spots. Mexico. 
samina. M. samina Druce (12 i). Head and thorax black; the 2 first palpal joints are orange, also the forehead, 
vertex and border of the collar, stripes on the shoulder-covers and legs. Abdomen orange with black transverse 
bands growing broader on the dorsum until they flow together and exhibiting metallic-blue spots. Wings 
hyaline with fine black veins, margins and apical spots; at the base of the forewing there stands an orange 
dot. Expanse of wings: 38 mm. Panama (Chiriqui). 
ethela. M. ethela Schaus (12 i) entirely resembles a small Cosmosoma stibostictum: thorax and apex of the 
orange-yellow abdomen are black; forehead and shoulders white-spotted; dots behind the antennae and forehips 
white. The hyaline wings show black margins and apical spot. Costa Rica. 
montana. M. montana Schaus. Anterior body dark brown, abdomen yellow; the rings 2 to 6 show 2 rows of 
black spots on the dorsum. Legs yellow, tarsi and a part of the hind tibiae brown, wings hyaline with fine 
brown veins, margins and apical spots. Expanse of wings: 39 mm. Costa Rica (Volcano Poas). 
epimetheus. M. epimetheus Schaus. Head and abdomen black, the latter with orange-red subdorsal spots on the 
3 first rings; thorax orange-red with a black spot in the middle. Wings hyaline with black veins, margins, inner- 
marginal spot and apical spot; the base and a short inner-marginal stripe orange. Expanse of wings: 26 mm. 
Brazil (Novo Friburgo). 
pyrrha. M. pyrrha Schaus (12 i). Head and abdomen are black, the thorax orange; the tips of the antennae, 
the front of the palpi, two spots on the forehead and the hips are white; the ventral valve and an indistinct 
longitudinal stripe on the dorsum of the first ring are white; in the $ there are besides white lateral stripes 
on the first segments. The wings are hyaline with black margins. Widely distributed in Mexico, Colombia, 
Guiana; 1 $ before me also from Peru (Cuzco). 
caerulei- 
corpus. 
roseifemur. 
erythaema. 
flaviventris. 
catherina. 
nana. 
endoleuca. 
desperata. 
M. caeruleicorpus Schaus. Body deep blue. Tibiae rosy red, tarsi black. Wings hyaline with black 
margins, veins and apical spot. Expanse of wings: 30 mm. Bolivia. 
M. roseifemur spec. nov. (12 k) is very nearly allied to the preceding species, differing particularly 
by the hips and femora being rosy red and not the tibiae, whereas the tibiae and tarsi are black-brown. The 
whole body is brown-black, above on the abdomen with an indigo-blue gloss. The hyaline wings have narrow 
black margins and large apical spots. Described according to 1 from Colombia (Quindiu Pass 2100 m); type 
in Coll. Seitz. It may also be a form of the following species with a black collar and black shoulder-covers, 
the red lateral spots at the 1st abdominal segment being absent, too. 
M. erythaema Hmps. (12 k) is a large, beautiful, easily recognizable species; head, thorax and abdomen 
are black, the latter with a blue gloss. Collar and shoulder-covers, hips and femora, as well as lateral spots 
at the first abdominal segment are carmine, the shoulder-covers bordered with black. The wings are diaphanous 
with black margins, veins, apical spots and middle spot of the forewing. Colombia, Bogota. 
M. flaviventris Druce (12 i). Body black; forehead and tips of antennae white, shoulder-covers orange- 
spotted, of the same colour are the last rings of the abdomen; the first exhibits lateral white spots. Wings 
hyaline with an orange dot at the base; veins, margins, discal, apical and inner-marginal spots being black. 
Expanse of wings: 26 mm. Panama (Chiriqui). 
M. catherina Schaus. Body black; spots on the shoulder-covers and at the sides of the 4th abdominal 
segment carmine. Wings hyaline with black veins, margins and apical spot. Expanse of wings: 30 mm. Brazil 
(Sa. Catharina). 
M. nana Schaus. One of the smallest species with quite black body, only the shoulders exhibit a 
red spot. Wings hyaline, veins, margins, apical spot black, also a large spot at the cell-end and one at the inner 
angle, the forewings are black. Expanse of wings: 17 mm. French Guiana. 
M. endoleuca Druce. Body black with blue-grey subdorsal lines on the abdomen. Wings hyaline 
with black veins, margins and apical spots. Expanse of wings: 25 mm. Venezuela. 
M. desperata Wkr. (12 k) is a very small, insignificant species; the body is unicolorously greyish black; 
the abdomen exhibits above indistinct, lighter subdorsal stripes. The hyaline wings have narrow, black distal 
