ATOMOSIA.— LAPHKIA. 185 



Atomosia tibialis, Macq. Dipt. Ex. Suppl. i. p. 76. — Mexico, Yucatan. 



xanthopus, Wiedem. Aussereur. zweifl. Ins. i. p. 529 (from Brazil ; is 



also recorded from Mexico by Van der Wulp, Tijdschr. voor Ent. xxv. 



p. 105). 

 Cormansis eupoda, Bigot, Ann. Soc. Ent. Fr. 1878, p. 234. 

 Cerotainia nigra, Bigot, 1. c. p. 238. 



dubia, Bigot, 1. c. p. 238. 



Aphestia nigra, Bigot, 1. c. p. 235. 



LAPHKIA. 



Laphria, Meigen, in Illiger's Magaz. ii. p. 270 (1803). 



1. Laphria monitor, sp. n., ? . 



Thoracic dorsum black, with orichalceous-pollinose stripes ; abdomen yellowish-red, with a black cross-band on 



each of the segments 1-6. 

 Length 21-22 millim. 



Edb. Nicaeagua, Chontales (Janson). 



Head, including the occiput, pale yellowish-pollinose ; face beset with yellow hairs 

 that reach up to the antennae ; facial prominence moderate ; beard and mystax yellow ; 

 palpi brownish at the tip ; two pairs of long, erect, black vertical bristles ; ocellar bristles 

 small or none (1). Antenna? yellowish-red; third joint slightly brownish, lanceolate, 

 about one and a half times the length of the preceding two together. Thorax : dorsum 

 black, moderately shining, a V-shaped figure on the anterior half, on each side, formed 

 by orichalceous pollen (the lower branch starts at the root of the wings, and runs 

 along the usual transverse suture, where it stops short, some distance before meeting 

 the corresponding stripe on the other side ; from this point the other branch starts, 

 running towards the humeral callus, and expanding a little, as it comes in contact with 

 it) ; humeral and post-alar callosities yellow, yellowish-pollinose, the latter connected 

 by a yellow-pollinose border in front of the scutellar suture ; scutellum yellowish-polli- 

 nose, its end black. Halteres reddish. Abdomen yellowish-red, with a black cross-band 

 at the base of each of the segments 1-6, the cross-band not quite occupying half the 

 segment and not reaching the lateral margins. Pleurae and coxae reddish-yellow, 

 orichalceous-pollinose ; legs yellowish-red, with yellow hairs and bristles. Wings with 

 a brownish-yellow tinge; veins reddish-brown; first posterior cell broadly open. — A 

 single female. 



2. Laphria ichneumon, sp. n., $ . (Tab. III. fig. 6, $ .) 



Slender, ichneumon-like, deep black, abdomen with a purplish reflection ; antennae and legs black ; wings brown ; 



the ordinary bristles on the head, thorax, and legs thin and soft, hardly differentiated from the longer 



hairs. 

 Length 18-20 millim. 



Hab. Guatemala, Purula 4000 feet {Champion). 

 biol. cente.-amek., Dipt., March 1887. 2 b 



