384 PERCY SLADEN TRUST EXPEDITION 



Color albidus. 



Long. 2 '3 mm. Lat. 1 mm. 



Distribution. Mauritius ; I have only seen one specimen belonging to my collection. 



27. Trichorhina tomentosa (Plate 22, figs. 1 — 5). 

 Alloniscus tomentosus Budde-Lund, Ent. Med. 1895, p. 126. 



Bathytropa thermo2}hila Dollfus, Feuil. Jeun. Nat., s. 3, v. 26, p. 94, text-fig. 2, 

 1896. 



Superficies squamis vel setis clavatis minutissimis dense obtecta ; margo posterior 

 capitis et omnium segmentorum trunci caudaeque serie squamarum majorum setis minutis 

 interpositis munitus. 



Oculi simplices, minuti, segre pigmentati. 



Antennae breviores, dimidio corpore breviores ; scapi articulus 4 paulo longior quam 

 articulus 2 ; flagellum scapi articulo 5 longitudine sequale, articulo priore plus duplo 

 breviore quam articulo altero. 



Frons linea marginali squamarum clavatarum subrecta, in medio levissime producta, 

 ab epistomate discreta ; processus frontales laterales parvi, rotundati. Epistoma supra 

 cum fronte productum, linea transversa elevata in medio subrecta utrinque sinuate 

 recurva, infra tuberculo rotundate tetragono inter antennulas munitum ; clypeus magnus, 

 porrectus. 



Trunci segmentum 1 margine posteriore curvato, segmenta 2, 3 margine posteriore 

 subrecto, segmenta 4 — 7 margine posteriore in medio leviter incurvo ; anguli postici 

 latei'ales segmentorum 1 — 4 rotundate obtusi, segmentorum 5, 6 subrecti, segment! 7 

 acutiores. Segmenta 2, 3, 4, stria suturali manifesta in femina. 



Caudae segmenta 3, 4, 5, epimeris majoribus, triangulis, latere exteriore curvato. 



Telsum breve, triangulum, duplo vel plus latius quam longius*, epimera segment! 5 

 paululum superans, lateribus subrectis, apice obtuso. 



Unicolor, albida vel ex albido grisea. 



Long. 3 — 3'5 mm. Lat. 1*3 — l'5mm. 



Distribution. Jamaica at Kingston (1905, C. Gagzo in Mus. Hamburg.). Venezuela 

 (Mus. Kjobenhavn). Ecuador at " Purnio ob Magdalena " (Burger in Mus. Gottingen) ; 

 Paris (Dollfus), Haiti, at Port au Prince (Nepperschmidt in Mus. Hamburg.); Kew Garden, 

 London (Bagnall), Naranjito 9. IIL 01 (V. Ortoneda), Guayaquil (F. v. Buchwald, 

 10. VHL 03, Mus. Hamburg.). 



28. Trichorhina quisquiliarum (Plate 22, fig. 6). 



Alloniscus quisquiliarum Budde-Lund, Ent. Med., 1895, p. 125. 



Tota superficies densius setis clavatis obtecta ; margo posterior omnium segmentorum 

 serie papillarum minutissimarum ornatus. 



* Dollfus describes the telson as " aussi long que large," aud fig. 5 in pi. 22 of this Memoir 

 represents it far less than twice as broad as long, with incurved sides. 



