The Dcrmatoptera, 309 



Long, corporis . . 

 ,, forcipis 



Hal. Sarawak, Penrissen, v, 1899 {Shelf ord, type in my 

 collection); Malacca Peninsula (Errington de la Croix 

 and F. GhapS, 1899 ; Mas. Paris). 



Opisthocosmia lugcns, Burr, 1900. Ann. Mag. N. H. (7), 

 vi, p, 101 (nee de Borraans). 

 I first confused this species with 0. Iuge7is, Borm., but 

 have since been able to examine the type of the latter ; it 

 is a distinct species, characterized chiefly by the form of 

 the $ forceps. The Paris specimen has unfortunately 

 lost the forceps, but the rest of the body agrees with 

 0. erroris. 



Ojnsthocosmia vicina, sp. n, 



Tota nigra, nitida ; 0. lugenti vicina ; ab ea differt elytra nitidio- 

 ribus, abdomine nitido sed baud genseo-nitenti ; forcipis bracchiis ^ 

 dente unico, minus forti, armatis. ^ $ . 



Long, corporis ... 9 mm. 9"5 mm. 



„ forcipis . . . 4 „ 5 „ 



Hab. Sarawak, Matang, iv, vi, 1900. 1 ^, 3 $? ; 

 Penrissen, iv, 1899. 1 ? (Shelford). 



Closely allied to 0. lugens, Borm., but differs in the 

 points indicated in the description. 



Opisthocosmia nevilli, sp. n. 



Statura majore ; nigerrima, nitidissima ( ^ variat colore riifo- 

 nigro, minus nitido) ; corpus gracile, elongatum, glabrum. An- 

 tenna. 12-segmentat8e, nigrse vel brunneee. Caput tumidum, nigrum, 

 eeneo-nitens, oculis parvis atris. Pronotum atrum, seneo-nitens, 

 laeve, antice tumidum, postice deplanatum, margine antico subrecto, 

 postico deplanato. Elytra rufo-nigra, Itevia, baud nitida, postice 

 truncata ; alpe atroe, lajves, nitidae, apice suturoe pallido-punctatse. 

 Pedes rufo-nigra3, geniculis fuscioribus. Abdomen nigerrimum 

 (9 nigro-rufura), Isete eeneo-nitens, minute punctulatum, elonga- 

 tum, medio dilatatum, apicem versus attenuatum ,• plicis lateralibus 

 valde distinctis ; segmenta 4-6 etiam lateribus tuberculis pliciformi- 

 bus instructa. Segmentum ultimum dorsale ^ transversum, utrin- 

 que carinis 2, ab apice basin versus oblique ductis, instructum, 

 valde declive, medio inter carinas lateralibus superioribus profunde 



