486 Longicornia Malayana. 



Caledonia, the head of the male is, it is true, even more 

 dilated, although not in every individual ; but the dila- 

 tation occurs in the very centre of the eye, thrusting 

 away the lower lobe, which thus becomes completely 

 separated from the upper. In Tapeina, a very anomalous 

 genus of this family, the head of the male is broadly 

 dilated in front, the eye and the base of the antennae 

 being placed behind the dilatation, the eye however 

 showing a little of its upper lobe above and of its lower 

 lobe below.* This remarkable type of structure is also 

 found in other families of Coleoptera, and where we should 

 perhaps least expect to see it, as e. g. in Acropis among 

 the Golydridce, in Apogenia f among the Cissidce, and in 

 Zygcenodes among the Anth rib idee ; its most remarkable 

 development occurs however in the Dipterous genera 

 Dlopsis and Ehiphontyia. 



In the female the head of Pascoea is like Sphingnotus, 

 but strongly narrowed behind the eyes. The only species 

 known was first detected by Madame Ida Pfeifter in 

 Ceram, where it is found on the trunks of fallen trees. 



Pascoea Idee. (PL XIX. fig. 6.) 



White, Cat. Longic. Brit. Mus. p. 341, pi. viii. fig. 5. 



P. nigra ; elytris metallico-viridescenti-nigris, sulcatis, 

 sulcis maculis albo-pilosis, fascias quatuor forman- 

 tibus. 



Heih. — •Ceram, Ambo}Tia. 



Black ; head shining, nearly glabrous, coarsely punc- 

 tured, a white hairy line behind each eye ; prothorax 

 with a smooth central line, the sides coarsely punctured ; 

 scutellum transverse, rounded behind ; elytra narrow, 

 tapering posteriorly, bright metallic black with a tint 

 of green, punctato-sulcate, the grooves "oath short lines 

 of white hairs so arranged as to form four bands, apices 

 emarginate, the outer angle strongly mucronate ; body 

 beneath glossy black, the sides slightly pubescent ; legs 

 black, the lower half of the tibias covered with yellowish 

 rusty hairs. 



Length 11-13 lines. 



* M. J. Thomson describes tlie eyes of the male as being entire ; his 

 figures however show the reverse. See Arch. Ent. i. 41, pi. vii. 



t I propose to substitute Apogenia for Pterogenia, which has been pre- 

 viously used. The genus has long stood in my collection under the name 

 Apogenia. 



