MIMICRY AMOXOST THE ULATTID.E. 375 



typif:»lly I'lectopteriiie in struetuix', aiul this cliaracter, in con- 

 jmictiou with tlie fan-like folding of the posterior pait of the 

 wing, is overwhelming evidence in favour of the inclusion of the 

 genus in the Oxyhalointe [=Plectopterin!eJ. 



Melyroidea mimetica, sp. n. (PI. XLVIII. fig. 17.) 

 5 . Head bright rufous, last joint of maxillary palpi fuscous, 

 antenn;e fuscous, except the basal and last apical joints, which 

 are laifo-testaceous. Pi'onotum bright I'ufous, quadiute, anterior 

 and lateral margins slightly reflexeil, sides only slightly detlexed ; 

 disc with slightly rounded elevations, two anterior, two antero- 

 lateral, and one, the largest, central. Tegmina dark casta- 

 neous, densely reticulated, mediastinal vein short, an oblique 

 sulcus on the right tegmeu marking the outer limit of the area 

 overlapped by the left tegmen. Wings infuscated, radial vein 

 bifurcated from the base, twelve costal veins, apices not incras- 

 sated, median vein simple, medio-discal area crossed by fourteen 

 irregular venuL-e, thrice as bi-oad as tlie medio-ulnararea, which i.s 

 crossed by eleven venulas, ulnar vein bifurcate, transverse venuhe 

 connecting it with the dividing vein, first axillaiy vein tri- 

 i-amose ; apical area about one third of total wing-length, its base 

 obtusely angled, nearly equally divided longitudinally, some 

 obscure venulations in the lower half. Abdomen piceous above 

 and beneath, supra-anal lamina triangularly produced, sub-genital 

 lamina cleft by a sulcus ; cerci short, acuminate, rufous. Coxse, 

 femora, and bases of tibiae testaceous, rest of tibife and the tai'si 

 fuscous ; formula of apical spines -, ^, - , genicular spines on mid 

 and hind femora ; front tibife unarmed except for three apical 

 s[)ines, mid and hind tibia? with one pair of basal and two apical 

 spines above, with ten spines in a double row and two apical 

 spines below. 



Total length 13-5 nun.; length of body 11 mm.; length of 

 tegmina 9-5 mm. ; pronotum 4 mm. X 4 nun. ; hind femora 

 4 mm. ; hind tibi;e 4 mm. ; hind tarsi 3 mm. 



Hab. Uncertain, but probably near Rio db Janeiro. 



One example (Miers collection. Oxford Museum). 



The species is veiy like a Telephorid beetle. 



Melyroidea magxifica, sp. n. (PI. XLVIII. fig. 18.) 

 2 . Head bright rufous, maxillaiy palpi piceous, antennae 

 piceous, except for three joints beyond the middle, which are 

 testaceous, slightly incrassated in the middle. Pronotum bright 

 rufous, quadrate, very sliglitly bi-oader anteriorly than post- 

 eriorly, all the bordei-s somewhat retiexed, disc with two antero- 

 lateral crescentic depressions. Tegmina green, the humei'al 

 angle and the part of the right tegmen overlapped by the left 

 dark shining blue, densely reticulated but the veins elevated, 

 mediastinal vein short, radial vein bifurcated from near the base, 

 six highl}' irregular and bi-anched costal veins, ulnar vein with 

 three ramose branches, apex of anal vein attaining a point at 



